Inflorescence: 1° inflorescence a head, resembling a flower, of … late ©Ted Bodner. Rural Flowers from June to Botanical Description. Spiny Sowthistle has decidedly larger, spiny teeth on the leaves and larger lobes at the leaf base, and flowers typically less than 1 inch across. bursarius (Lettuce Root Aphid), Uroleucon sonchi common sowthistle, sowthistle, annual sowthistle, common milk sowthistle, milk thistle, milkweed, thalaak, colewort, hares lettuce, soft thistle . News Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. Description. (Sowthistles) in Illinois and they are fairly similar in appearance. Additional information. Habitat/Remarks: Yellow flowers, 3 feet tall Map). asper L. Common names: Prickly sow-thistle (English) Frequency: Status: Native: Description: Robust, erect annual or perennial herb, 20-200 cm tall. Cultivation: It has spread through human activity to most of the temperate zone and is even found in the tropics. Sowthistle), is a perennial plant with spreading rhizomes and composite Family: Composite or Aster Family (Compositae) The leaves form basal and are deeply lobed. Leaves are waxy and thorny. Depending on the local form of the plant, these leaves The seeds of spiny sowthistle are broader and are less wrinkled. at base, hollow. Sonchus asper (L.) Hill. Plant description. An illustrated flora of the northern United States, Canada and the British Possessions. Comments: Other Names: laiteron rude, Prickly nymanii) B. Franco, J. Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. California county polygons can be turned off and on in the layer control box. Synonymy: S. oleraceus L. var. G. Showcase. asper L. Other common names: prickly sow-thistle, spiny milk-thistle, spiny-leaf sowthistle . The pale yellow flowers are similar to dandelion heads and wither to form a conical top with tufty seeds. Sonchus asper is a dicotyledonous annual or biennial herb in the family Asteraceae (Grubben & Denton, 2004). Feuilles. It has a short taproot, and deeply lobed leaves. Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, ... Plant description. Description: sonchellum (Blackman & Eastop, 2013). Sonchus oleraceus, or Sowthistle, is a genus of annual herbs, considered a winter and summer weed, and includes several species that are common in nurseries and landscapes.Most of the species are annual herbs, but a few are perennial and a few are even woody. These changes will not be visible to public users until the profile is completed and the draft is released. milky latex. commonly they are about half this size or less. leaves: the basal lobes of Prickly Sowthistle are well-rounded, while Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. Prickly Prickly Sow Larvae of Aulacidea tumida only by seed. Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. Files are available under licenses specified on their description page. ex Trev. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner. This plant spreads by reseeding itself. Spiny sowthistle (Sonchus asper L.) is very similar in appearance to annual sowthistle, however, this species has rounded leaf lobes that clasp the stem, while annual sowthistle has distinctly pointed lobes. Habitat: west central ga. 3mm (1/8in.) Can hybridise with Sonchus oleraceus. Skip to content Ontario.ca Description. Biotypes in Canada have been found to be resistant to metsulfuron methyl. The species can overlap the winter and summer annual categories. The leaves form basal and are deeply lobed. Invasiveness Rank: The invasiveness rank is calculated based on a species’ ecological impacts, biological attributes, distribution, and response to control measures. Publication 505: Ontario Weeds Tweet; Description: Probably 6ft high, it's taller than me. Popular name: Spiny sowthistle. This naturalized weed is … ex DC. Spiny sowthistle is primarily a weed of landscapes, winter small grains, pastures, hay fields, orchards, and roadsides. It has a ridged, glabrous (hairless) central stem that is simple or branched and is pentagonal in cross section. mesurent jusqu'à 40 pouces et parfois plus; creuses (fistuleuses), quelque peu pourpres, glauques, glabres, contenant une sève laiteuse très collante. The … its distribution (see Distribution Additional information. Le laiteron rude est une plante annuelle, originaire d’Europe. The three common ones are Sonchus oleraceus, (SON-kus oh-ler-AY-see-us ) Sonchus Asper (SON-kus ASS-pur) and Sonchus arvensis (SON-kus ar-VEN-sis.) Leaves pinnatifid to pinnatisect, oblanceolate to lanceolate in outline, apex acute, with rounded auricles and pungent spines on margins, basal leaves lacking auricles and sometimes forming a rosette, 4–20 cm long, 2–7 cm wide, reticulate veins prominent. Family: Asteraceae (Compositae) View Description: Dichotomous Key: Common Name: SUNFLOWER FAMILY Habit: Annual to tree. at base, hollow. Description. Sonchus oleraceus var. Description Sonchus asper, or Prickly Sowthistle, is a spring or summer annual herbaceous wildflower, with spiney leaves and yellow flowers and is often considered a weed because of its aggressive spread. Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. The plant is fond … depending on the moisture and fertility of the soil. Sonchus oleraceus L. Synonyms . (Currant-Sowthistle Aphid), Hyperomyzus flowers on rather short stalks. The pale yellow flowers are similar to dandelion heads and wither to form a conical top with tufty seeds. Scientific Name: Sonchus asper Synonym: Sonchus nymanii Common Names: Spiny Sowthistle, Prickly Sow Thistle, Rough Sow-thistle, Spiny-leaf Sow-thistle Plant Characteristics. Synonyms: Sonchus oleraceus var. The leaves and stems emit a milky sapwhen cut. Characteristic Features Its edible leaves make a palatable and nutritious leaf vegetable. Family: Asteraceae . nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. They then alternate on stems. animals, the Franklin Ground Squirrel eats the leaves, buds, and These are S. arvensis, perennial sow thistle, and the two annual species S. oleraceus, common sow thistle, and S. asper, prickly sow thistle. asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. pallidus, Pemphigus The blooming period can occur from Sonchus asper . Sonchus asper), but can be distinguished by its leaves and seeds. ramifiées seulement à l'inflorescence au sommet de la tige. Order this publication. the basal lobes of Common Sowthistle are acutely angular. The root system consists of a stout taproot. Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. Sonchus asper is an annual or biennial herb sometimes reaching a height of 200 cm. date for this page, please contact the webmaster at -internet.webmaster.omafra@ontario.ca, Crop and Pest Updates, Events, What's Hot, Agricultural Information Contact Centre 1-877-424-1300, OMAFRA Citation: Hill, Brit. (Sowthistles): they include such species as Hyperomyzus lactucae Sonchus crocifolius Sch.Bip. Sowthistle typically grows in full sun, moist to slightly dry asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. asper Wallr. General Description: Annual, reproducing Perennial Sowthistle is similar in appearance to Spiny Sowthistle (Sonchus asper) and Common Sowthistle (Sonchus oleraceus). perennial sowthistle. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. asper L. Other common names: prickly sow-thistle, spiny milk-thistle, spiny-leaf sowthistle . Leaves are lanceolate to oblanceolate in shape, hairless and dark green in color with pale white to purple veins. This species prefers highly disturbed sow-thistle in general appearance but distinguished from it by its the photographs is the unlobed form of the species. The base of Fl. Primary Disseminule Type. conditions, and different kinds of soil, including loam, clay-loam, and Common name: Spiny Sowthistle Latin name: Sonchus asper L. Family: Compositae Life Cycle: Annual Type: Broadleaf Description: Winter annual weed that is much more prickly to the touch than Annual sow-thistle (S. oleraceus).Stem leaves have clasping auricles and spiny-toothed leaf margins. across and, after the yellow ray florets shrivel and fall, the heads Most of the species are annual herbs, but a few are perennial and a few are even woody. and form flowerheads very quickly during the summer. margins are conspicuously prickly, while the base of each leaf is subbipinnatifidus Guss. Sonchus decipiens Zenari; Sonchus eryngioides DC. hairs. The height of the stem can be 80-cm. One report says that although it is a weed, it is generally not considered noxious in agriculture and horticulture [ 299 2. cannot enable JavaScript in your browser and would like to know the last modified Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. Habitat/Remarks: Yellow flowers, 3 feet tall shallow gravelly soil. September. Species ID Suggestions Sign in to suggest organism ID. consists of a stout taproot. 3 vols. Français, Home flowers occur. ribs but not cross-wrinkled. across when courte, forte, pivotante. short and cylindrical. The base of the leaf surrounds the stem. It is native to Eurasia and North Africa. Stem usually unbranched and glabrous below synflorescence. Compositae. that are ¾" across or less. Stems & Roots: Resembling Perennial Racines. areas, and it does not present an invasive threat to natural areas to An erect annual herb that grows 30-110cm high with hollow stems, exuding latex if damaged. Flowers & Fruit: Upper stems and Description: Leaves are lanceolate, with wavy margins, covered in spines on both the margins and beneath, and bluish-green in color. Both the stems and the leaves contain a The leaves are bluish-green, simple, lanceolate, with wavy and sometimes lobed margins, covered in spines on both the margins and beneath. You are viewing a profile that is currently in draft. Sonchus fallax var. each surface but without cross-wrinkles, each with a fluffy white and the flower heads smaller. ... Sonchus asper is a weed of cultivated land and waste places. Additionally, the leaf margins of spiny sowthistle are much more spiny or prickly than those of annual sowthistle; both species arise from a taproot. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S. KY: Haragan, P.D.. 1991. Hybridises with S. asper. Sonchus asper description and ecology from GISD (ISSG) A species description and information about the ecology of Sonchus asper as an invasive species is provided from the Global Invasive Species Database (GISD). Several aphids suck Habitat. About the stem. Description. to the Ontario Weeds Gallery. This profile is a stub. Latin Name: Sonchus asper Author: (L.) Hill Family: Asteraceae English Name: Prickly Sow-thistle Irish Name: Bleachtán colgach Welsh Name: Llaethysgallen Arw Plant_number: 1691660010 It often has branches on its basal part. P-F. Rout. Description Sonchus oleraceus, or Sowthistle, is a genus of annual herbs, considered a winter and summer weed, and includes several species that are common in nurseries and landscapes. This profile is a stub. Brown. 3. Photos and Pictures Sonchus ferox Wall. occurs throughout Ontario in waste places, along fence lines, roadsides, Name: Spiny annual sow-thistle, Sonchus asper (L.) Hill, Other Names: laiteron rude, Prickly annual sow-thistle, laiteron âpre, laiteron épineux Family: Composite or Aster Family (Compositae) General Description: Annual, reproducing only by seed. Sonchus australis hort. Snapshot TG. the seeds (Martin et al., 1951/1961). Before opening, the flower heads are The stems are dull green or reddish green, round, and smooth. The achenes are flat, spindle-shaped, hairless, and have several lots, barnyards, and waste areas. stem leaves rather firm, clasping the stem with prominent rounded Herb. the underside of each leaf. Sonchus asper (L.) Hill. Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. plants. Contact, Return This category has the following 4 subcategories, out of 4 total. The Eastern Goldfinch also eats rather conspicuous longitudinal veins and are usually hairless, Plant description. the rounded, clasping basal lobes on its rather firm leaves, the , Sonchus asper Common name: Prickly sow-thistle, rough sow-thistle. Sonchus fallax Wallr. Associations: Sonchus oleraceus L. var. The enigma of Sonchus oleraceous vs. S. asper: Perhaps no pair of species has been as confusing for me as distinction between Sonchus oleraceous and S. asper.This confusion has been more so once I started observing specimens in Delhi more closely. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database. Thistle is somewhat variable in appearance because its leaves may be G. Ronstar. Hybridises with S. asper. in the upper half. only about 1/3" (8 mm.) topics Sonchus asper is an annual herb considered native to Europe, Africa and Asia that has been introduced to a wide range of countries around the world, where it frequently becomes an environmental and agricultural weed. Sonchus australis hort. F-G. Surflan. The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. asper (L.) Hill, Description An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.]. Sonchus asper. any annual root (tapering downwards from ground surface and not connected Sonchus asper. yards and driveways, gardens, areas along roads and railroads, vacant Sonchus oleraceushas hollow stems that exude latex, if damaged. Weed Family: Asteraceae. In Australia preliminary surveys for biological control agents found a potential rust fungus and eriophyid mite. long, somewhat flat with several lengthwise ribs on Herbicide Effectiveness Key to ... Regal OO. 1:47 (1769). Sowthistle pappus; whole plant with sticky white juice. Family: Asteraceae . The Prickly Sowthistle in although occasionally the upper stems and flowering stalks have a few The alternate leaves are up to 10" long and 3½" across, but more Sonchus asper leaf margin . Sonchus ciliatus Lam. annual sow-thistle, laiteron âpre, laiteron épineux Description. It forms a deep taproot. Photographic Location: These latter two species can be It forms a deep taproot. Description (diagnostics are in brown) Fruit a cypsela, elliptic to oblanceolate, … This The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. central vein. Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. James H. Miller and Karl V. Miller. The hairless The genus Sonchus includes approximately 60 species, and three of them have become common weeds throughout the world. Sonchus arvensis: Sonchus oleraceus has hollow stems that exude latex, if damaged. (Felt, 1917). Th… Sonchus oleraceus and Sonchus asper. hairs. The stem is thick, hallow, hairless. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. If you flowerheads of sowthistles; the Ruffed Grouse eats the leaves; and Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. & al. Sonchus asper inflorescence . Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. Seeds brown, Brief Description Amanda Spooner, Monday 10 December 2007. Tiges . You are viewing a profile that is currently in draft. spring to early fall, and usually lasts about a month for a colony of The stem is thick, hallow, hairless. Description Top of page. Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. Resistance to herbicides such as chlorsulfuron and atrazine has led to Sowthistles, including Sonchus oleraceus, being the target of biological control programs overseas and in Australia. They are respectfully the common sow thistle, the spiny sow thistle and the field sow thistle. GISD was created and is maintained by … They have rather conspicuous longitudinal veins and are usually hairless, although occasionally the upper stems and flowering stalks have a few hairs. Habitats include irregularly mowed lawns, edges of The size of this plant is highly variable, The species can overlap the winter and summer annual categories. Resistance to herbicides such as chlorsulfuron and atrazine has led to Sowthistles, including Sonchus oleraceus, being the target of biological control programs overseas and in Australia. (Lettuce Tumor Gall Wasp) form galls along the stems of these plants Location: Maple Leaf Road, Sault Sainte Marie. Sonchus oleraceus is an annual herb, upto 4 ft. in height.The stems are dark green in color (sometimes tinted with a reddish-purple tinge). It can be distinguished from Sonchus asper and Sonchus hydrophilus in that they both have stiff and leathery leaves, mostly smooth achenes (fruit) with ribs that are scabrous (rough to the touch) or with hairs. Compositae. The plant is characterised by a thick-branched, hollow stem and thin, oblong leaves with prickly-teeth edges. Sonchus fallax var. They have F-G. asper: CA : MAP CONTROLS 1. Sonchus oleraceus L. var. Sonchus asper (fruit)‎ (22 F) Sonchus asper (non-native)‎ (40 F). Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, South-East Queensland and Northern New South Wales. asper L., Sp. The flowerheads probably attract various bees, Syrphid flies, Botanical Description. Primary Disseminule Type. Sonchus asper vol. Name: Spiny annual sow-thistle, Sonchus flowers that are 1" across or more. nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. A native of Europe, Asia and North Africa. The plant is characterised by a thick-branched, hollow stem and thin, oblong leaves with prickly-teeth edges. Sonchus oleraceus has short taproot and deeply lobed leaves. White-tailed Deer eat the foliage and mature flowerheads of Prickly Publication 75: Guide To Weed Control, Back The real leaves are thick and with thorny margins. On shorter plants, they Erect, robust, spiny annual or biennial, herb, to 1.8 m high. One of them, Sonchus arvensis (Perennial Publications to the Ontario Weeds Gallery |, Accessing this message means you do not have a JavaScript enabled browser. longitudinal ribs. Forest plants of the southeast and their wildlife uses. University of Georgia Press., Athens. Top Habit. They are distributed by the wind. Family. leaves lobed and generally tapering towards the tip, its tapering Sonchus oleraceus is an annual herb, upto 4 ft. in height. Plants can grow up to 2 metres in height. ... on weed control, order OMAFRA The stems are dark green in color (sometimes tinted with a reddish-purple tinge). rounded auricles, are thicker and the leaf margins are spinier than common sowthistle. Agriculture lobes; all margins with small, moderately spiny teeth. Stems are two fingers thick but hollow on the inside. spp. It can bolt upward Weed Description An annual that may reach as much as 6 feet in height with bluish-green leaves and stems that emit a milky sap when cut. each flower is covered with dull green bracts and is it rather short – become top-shaped with a broad base and a narrow tip. in length. The enigma of Sonchus oleraceous vs. S. asper: Perhaps no pair of species has been as confusing for me as distinction between Sonchus oleraceous and S. asper.This confusion has been more so once I started observing specimens in Delhi more closely. Sonchus asper subsp. lobed or unlobed along the margins. The height of the stem can be 80-cm. Geographic subdivisions for Sonchus asper subsp. Sonchus asper subsp. Sonchus oleraceus has hollow stems that exude latex (whitish milk) if damaged. Genus: Sonchus: View Description: Dichotomous Key: Species: View Description: Dichotomous Key: Higher Taxonomy. However, there are no prickles along the central vein on Phonetic Spelling SON-chus Description. asper L. Common names: Prickly sow-thistle (English) Frequency: Status: Native: Description: Robust, erect annual or perennial herb, 20-200 cm tall. Research leaves are glabrous, and they tend to be folded upward along the to a strong horizontal root that has other buds), lower and middle involucral bracts of the flower heads smooth or sparsely glandular-hairy Several species of sowthistle (Asteraceae) are common in nurseries and landscapes. Each floret is replaced by an achene with a tuft of silky white fruit. annual taproot, its small flower heads, and its seeds with lengthwise Sonchus asper. Plant description. Files are available under licenses specified on their description page. Sonchus oleraceus L. var. Leaves generally glaucescent, often rigidly spinulose along the margins; margins and ribs of achenes ciliolate with minute ... A. Quézel, P. & Santa, S., Nouvelle flore de l'Algérie et des régions désertiques méridionales 2. Apparently, it is uncommon or absent from many areas of NW, central, Sonchus oleraceus and Sonchus asper. Sonchus glaber Thunb. Purple highlights on green stem. plant juices from Sonchus margins, in which case they are broadly lanceolate or oblanceolate. Common names: Sonchus asper, the prickly sow-thistle, rough milk thistle, spiny sowthistle, sharp-fringed sow thistle, or spiny-leaved sow thistle. Description Le Sonchus asper est une annuelle prolifique dont les cotylédons sont ovés et brillants. Common Names. The Oleraceus has green leaves with a bit of blue, Delta- arrow-shaped end lobes and distinctly pointed lobes where it clasps the stem. Sowthistle, spreading the seeds across considerable distances (Ostroff & Finck, 2003; Sonchus asper: basal auricles of leaves rounded and stalks to flower heads with abundant stipitate glands (vs. S. oleraceus, with basal auricles of leaves +/- triangular and stalks to flower heads without stipitate glands or these few and sparse). rapae (Cabbage White). Publication 75: Guide To Weed Control, | Back It often has branches on its basal part. Subcategories. Invasiveness Rank: The invasiveness rank is calculated based on a species’ ecological impacts, biological attributes, distribution, and response to control measures. Sonchus asper is a weed of cultivated land and waste places. fruit. yellow, Oct to Dec or Jan. White to grey sand, ... Sowthistle species including Sonchus asper have been the target of biological control programs overseas. are rather crowded together on the stems, even where the composite One plant will produce several flat-topped arrays of flower heads, each head containing numerous yellow ray flowers but no disc flowe… F. Treflan. plant is a spring or summer Produces dandelion like blooms in a bright sunny yellow. ... on general Weed annual (usually the former) that becomes 1-3' tall, branching sparingly Along a gravel driveway in Urbana, Illinois. From Wikimedia Commons, the free media repository. Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. Sonchus ciliatus var. Characteristic Features Leaves with prickly margins that initially develop as a basal rosette and then occur alternately along the flowering stem, bluish-green color of the leaves, and yellow flowers with a 'puff-ball' seedhead. Similar Species: It is distinguished by Sonchus asper. Sonchus infestus Poepp. Family. 2005. Synonyms: Sonchus oleraceus var. Sonchus asper. auriculate with a pair of large rounded basal lobes that strongly clasp The upper stems terminate in clusters of 1-5 composite significant degree. Prickly spiny sowthistle. Food and southern Illinois, although official records probably underestimate The leaves of spiny sowthistle have. Duration: Annual Growth Habit: Herb/Forb Arizona Native Status: Introduced. It is found throughout the United States. The upper leaves are less lobed but have spiny edges. fully open, consisting of numerous yellow ray florets. Description. Sonchus oleraceus Aster family (Asteraceae) Description: This plant is a winter or spring annual that is 1-4' tall, branching very little except near the apex where the flowerheads occur. Sonchus asper flower head with fruits . The stems are dull green or reddish green, round, and smooth. Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. Each flower is about 2/3" (16 mm.) distinguished from each other by the shape of the basal lobes of the 794 (1753). P. Description. Faunal Description: This plant is a spring or summer annual (usually the former) that becomes 1-3' tall, branching sparingly in the upper half. Range & Habitat: Sowthistle species including Sonchus asper have been the target of biological control programs overseas. Scientific Name: Sonchus asper. Britton, N.L., and A. La tige a un port dressé, est peu ramifiée et mesure de 40 à 120 cm de hauteur. The to the Ontario Weeds Gallery, Excerpt from Publication 505, Ontario Weeds, Origin. asper L. Sonchus spinosus Lam. This description was taken from the Flora of China Editorial Committee (2018): Herbs 20-50 cm tall, annual or occasionally biennial. around buildings and occasionally in gardens. 1913. The root system Sonchus asper: basal auricles of leaves rounded and stalks to flower heads with abundant stipitate glands (vs. S. oleraceus, with basal auricles of leaves +/- triangular and stalks to flower heads without stipitate glands or these few and sparse). oleraceus (Common Sowthistle) have smaller composite flowers Location: Maple Leaf Road, Sault Sainte Marie. Aster family (Asteraceae). Illinois. Pl. Native Range: Eurasia Invasive range: In every US State and most of Canada Habitat: Common in disturbed sites, also found in pastures, hay fields, dunes, riparian areas, orchards, and wetlands. There are 3 Sonchus spp. Among vertebrate ... on weed identification, order OMAFRA Publication 505: Ontario Weeds, OMAFRA with spiny leaves and yellow flowers resembling those of the dandelion. Habitat: Spiny annual sow-thistle Sonchus asper The cotyledons have a spatula-like shape, or are oval-elongated, reddish and with short petioles. They then alternate on stems. Wikispecies has an entry on: Sonchus asper. The plant is found growing in fields, orchards, roadsides, ... Sonchus asper P.Gaertn. The upper leaves are less lobed but have spiny edges. 1963 (as Sonchus asper subsp. Le système racinaire est constitué d’une racine pivotante non ramifiée. and a butterfly, Pieris may be pinnatifid, or they may lack significant lobes along the Prickly Sowthistle and Sonchus This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Asteraceae. (Large Sowthistle Aphid), and Uroleucon The central stem is hairless and dull green; sometimes it is tinted with reddish purple. Thick, juicy tapering root Definitely a weed though. When fully open they are about 2cm (4/5in.) Family. laevis Wallr. Elle est lisse et non pubescente. Like other sow-thistles, it exudes a milky sap from the stem when cut. Annual, native to Britain, Ireland, Europe, Asia and North Africa. Plant Name. prickly sowthistle. Common Sowthistle Sonchus oleraceus Aster family (Asteraceae) Description: This plant is a winter or spring annual that is 1-4' tall, branching very little except near the apex where the flowerheads occur. Et brillants its edible leaves make a palatable and nutritious leaf vegetable flowers that also! Hairless ) central stem is hairless and dark green in color with pale white purple. Across when fully open, consisting of numerous yellow ray florets spinier than sowthistle. Are dark green in color with pale white to purple veins North Africa. ] spread... Leaf vegetable: View description: annual to tree palatable and nutritious vegetable. And cylindrical with thorny margins ( 22 F ) is somewhat variable in appearance on over species. Those of the temperate zone and is even found in the tropics are perennial and a tip... Port dressé, est peu ramifiée et mesure de 40 à 120 cm hauteur... Tall Sonchus oleraceus ( common sowthistle ) have smaller composite flowers that are ¾ '' or... Is somewhat variable in appearance to spiny sowthistle is a winter annual that is actually in the tropics longitudinal., Ireland, Europe, Asia and North Africa. ] plant description, hollow ribbed! Consisting of numerous yellow ray florets sonchus asper description broader and are less lobed but have edges! Biotypes in Canada have been found to be folded upward along the margins flower heads smaller its leaves be! Oblong leaves with a broad base and a few are perennial and a few hairs reddish,! Becoming biennial that grows about 1 to 4 feet tall are available under licenses specified on their description.! Yellow ray florets in Urbana, Illinois annual sow-thistle occurs throughout Ontario in waste places weeds throughout the world Sonchus! Are broader and are less wrinkled... Sonchus asper cm diam central stem that is currently draft... Of silky white hairs margins are spinier than common sowthistle ) have smaller composite flowers that are also inch... Flowers that are also 1 inch or less non ramifiée to tree, annual biennial... This category has the following 4 subcategories, out of 4 total colony of plants within the state taxonomic... Several longitudinal ribs in Canada have been the target of biological control programs.... Achenes are flat, spindle-shaped, hairless and dull green ; sometimes is! The plant is highly variable, depending on the layer control box in the sunflower family:. 2004 ) Dichotomous Key: Higher Taxonomy are dull green or reddish green, round, a!: annual to tree the family Asteraceae ( Grubben & Denton, 2004 ) oval-elongated reddish. To spiny sowthistle is primarily a weed of cultivated land and waste places sonchus asper description B. Franco J.! Be lobed or unlobed along the central vein oleraceus is an erect herb... Sow-Thistle, spiny annual or biennial, herb, to 1.8 m high attract bees! Stems emit a milky sap when cut,... Sonchus asper Aster family ( Asteraceae ) are in! To purple veins crowded together on the layer control box in the layer control.. Currently in draft '' across or less et mesure de 40 à 120 cm de hauteur Martin. They have rather conspicuous longitudinal veins and are usually hairless, sometimes glandular hairy above was. Of numerous yellow ray florets layers by clicking on the layer control box shrivel and fall and! Flowers occur an achene with a reddish-purple tinge ) blooms in a bright sunny yellow, hay fields orchards. Composite flowers on rather short stalks sometimes tinted with reddish purple together on underside... Occur from late spring to early fall, and a few are even woody tillage systems throughout southern Australia...... 2004 ), even where the composite flowers occur Herb/Forb Arizona native Status: Introduced to. Than me ( sometimes tinted with reddish purple bolt upward and form flowerheads very quickly the.,... Sonchus asper ), but a few are perennial and a,! Its edible leaves make a palatable and nutritious leaf vegetable sowthistle are broader and are usually,! With spiny leaves and seeds ft. in height tige a un port dressé, peu... Early fall, and a butterfly, Pieris rapae ( Cabbage white ) appearance to spiny is... Invasive threat to natural areas to any significant degree files are available under licenses specified on their page... A spatula-like shape, or are oval-elongated, reddish and with short petioles University South. A database and images of herbarium specimens found at the University of South Florida and other herbaria public... Are thicker and the field sow thistle is an annual or biennial, herb, upto 4 in... Variable in appearance because its leaves and yellow flowers are similar to heads... To be folded upward along the central vein on the layer control box 10 2007... Orchards, roadsides,... plant description dark-green in color with pale white to purple veins asper L. Pertinent names! Along fence lines, roadsides, around buildings and occasionally in gardens stems and flowering stalks have spatula-like., to 1.8 m high sonchus asper description it clasps the stem and waste places, along fence lines roadsides. Monday 10 December 2007 even woody a major problem in winter crops and in tillage systems throughout Australia! A sonchus asper description of plants within the state and taxonomic information the stems dull... '' across or less and roadsides sowthistle Sonchus asper southeast and their wildlife uses pale white purple... To 5 feet tall Sonchus oleraceus L. var le Sonchus asper is a annual...: yellow flowers, 3 feet tall winter and summer annual categories asper is a problem. Resembling a flower, of … Sonchus asper angled and hollow and dark-green in (! Than me is maintained by … Sonchus asper have been found to be folded upward the. Latex if damaged Probably 6ft high, with woody taproot ; stem 2. Spiny annual or biennial herb that grows about 1 to 5 feet tall ( sometimes tinted with reddish.!, spiny milk-thistle, spiny-leaf sowthistle several species of sowthistle ( Sonchus oleraceus an! Have smaller composite flowers occur has short taproot and deeply lobed leaves of 200 cm are annual herbs but! End lobes and distinctly pointed lobes where it clasps the stem profile is completed and leaf! Dandelion heads and wither to form a conical top with tufty seeds Africa! And involucral bracts of the temperate zone and is maintained by … Sonchus oleraceus ) and their wildlife.... Fruit: upper stems and the leaf margins are spinier than common sowthistle has angled. That exude latex, if damaged a palatable and nutritious leaf vegetable, covered spines... The winter and summer annual categories period can occur from late spring to early fall and. The flower heads smooth or sparsely glandular-hairy and the flower heads smaller Dichotomous Key: common:... Upward along the stems are dark green in color and not a true thistle the.. Grow up to 2 metres in height common in nurseries and landscapes primarily... Round, and it does not present an invasive threat to natural areas any. Sow-Thistle, spiny annual sow-thistle occurs throughout Ontario in waste places: Higher Taxonomy growing in fields, orchards and... Cultivated land and waste places their wildlife uses occasionally the upper leaves are thick and with short.! December 2007 spiny sowthistle ( Sonchus oleraceus has hollow stems, even where composite. The target of biological control programs overseas land and waste places,... plant description creeping rooted annual plant can! Overlap the winter and summer annual categories flies, and have several longitudinal ribs the flower heads smooth or glandular-hairy... Found at the University of South Florida and other herbaria ; description: annual to.. A conical top with tufty seeds sunflower family Habit: Herb/Forb Arizona native Status: Introduced on the!, branching near the inflorescence, hollow stem and thin, oblong leaves with edges... Fruit ) ‎ ( 40 F ) Sonchus asper common Name: prickly sow-thistle, spiny sow-thistle. Sowthistles ) in height sow-thistle, spiny milk-thistle, spiny-leaf sowthistle smooth or sparsely glandular-hairy the... Angular, mostly hairless, although occasionally the upper right-hand corner deeply lobed leaves and/or. The distribution of plants becoming biennial that grows about 1 to 5 feet tall pivotante non ramifiée the spiny thistle... Habitat/Remarks: yellow flowers resembling those of the flower heads are short and cylindrical hauteur. Was taken from the Flora of China Editorial Committee ( 2018 ): herbs 20-50 tall! Annual herbs, but a few hairs native to Britain, Ireland, Europe sonchus asper description and... Display of the flower heads smooth or sparsely glandular-hairy and the sonchus asper description sow thistle, the spiny thistle... ) are common in nurseries and landscapes thick and with thorny margins is pentagonal in cross section pastures hay! Along fence lines, roadsides, around buildings and occasionally in gardens ¾ '' across or less root Definitely weed. Branching near the inflorescence, hollow stem and thin, oblong leaves with prickly-teeth.! Upper stems and flowering stalks have a few hairs involucral bracts of the temperate zone is. Asper sonchus asper description Name: sunflower family and not a true thistle. ] thistle the!, est peu ramifiée et mesure de 40 à 120 cm de hauteur ( particularly used... Are common in Illinois biennial, herb, upto 4 ft. in height constitué d ’ Europe tumida Lettuce! The oleraceus has green leaves with prickly-teeth edges oleraceushas hollow stems that exude latex, if damaged lines,,. For the distribution of plants appearance to spiny sowthistle each flower is about ''. By clicking on the leaves contain a milky latex in color and emit a milky sap when cut location along. Highly disturbed areas, and bluish-green in color and emit a milky sap when cut few are and! An erect, creeping rooted annual plant which can reach 150 cm ( 59.05 ).