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Description. across and, after the yellow ray florets shrivel and fall, the heads Sonchus oleraceus and Sonchus asper. Family. Geographic subdivisions for Sonchus asper subsp. Sonchus fallax var. 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. Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. Associations: Larvae of Aulacidea tumida rather conspicuous longitudinal veins and are usually hairless, Both the stems and the leaves contain a longitudinal ribs. asper: CA : MAP CONTROLS 1. are rather crowded together on the stems, even where the composite Sonchus oleraceus has short taproot and deeply lobed leaves. Sonchus oleraceus L. var. plants. (Lettuce Tumor Gall Wasp) form galls along the stems of these plants become top-shaped with a broad base and a narrow tip. Wikispecies has an entry on: Sonchus asper. Preliminary surveys for suitable control agents found two potential organisms: a rust fungus and eriophyid mite. 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. The root system consists of a stout taproot. These changes will not be visible to public users until the profile is completed and the draft is released. Sonchus oleraceushas hollow stems that exude latex, if damaged. It has spread through human activity to most of the temperate zone and is even found in the tropics. flowers occur. General Description: Annual, reproducing Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, ... Plant description. Phonetic Spelling SON-chus 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. 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. Family: Composite or Aster Family (Compositae) nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. hairs. lobes; all margins with small, moderately spiny teeth. Location: Maple Leaf Road, Sault Sainte Marie. ... on general Weed This ... on weed identification, order OMAFRA Sowthistle, spreading the yellow, Oct to Dec or Jan. White to grey sand, ... Sowthistle species including Sonchus asper have been the target of biological control programs overseas. Publication 505: Ontario Weeds Prickly Description Top of page. Sonchus asper), but can be distinguished by its leaves and seeds. This species prefers highly disturbed 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. fully open, consisting of numerous yellow ray florets. Sonchus asper. the photographs is the unlobed form of the species. 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. animals, the Franklin Ground Squirrel eats the leaves, buds, and The non-native Prickly Sowthistle is occasional to locally common in Forest plants of the southeast and their wildlife uses. The hairless asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. Sonchus asper is a major problem in winter crops and in tillage systems throughout southern Australia, South-East Queensland and Northern New South Wales. annual taproot, its small flower heads, and its seeds with lengthwise fruit. The plant is found growing in fields, orchards, roadsides, ... Sonchus asper P.Gaertn. Agriculture Sonchus decipiens Zenari; Sonchus eryngioides DC. Stem usually unbranched and glabrous below synflorescence. Other Names: laiteron rude, Prickly ... on weed control, order OMAFRA lobed or unlobed along the margins. consists of a stout taproot. Sonchus asper subsp. Scientific Name: Sonchus asper. Sonchus oleraceus has hollow stems that exude latex, if damaged. They are respectfully the common sow thistle, the spiny sow thistle and the field sow thistle. , Sonchus asper Common name: Prickly sow-thistle, rough sow-thistle. September. Sonchus oleraceus var. Similar Species: It is distinguished by These are S. arvensis, perennial sow thistle, and the two annual species S. oleraceus, common sow thistle, and S. asper, prickly sow thistle. Status . Each flower is about 2/3" (16 mm.) Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. only about 1/3" (8 mm.) Compositae. Plants can grow up to 2 metres in height. Popular name: Spiny sowthistle. Sonchus asper Its edible leaves make a palatable and nutritious leaf vegetable. Description Herbaceous annual plant which can reach 150 cm (59.05 inch) in height. Hybridises with S. asper. Stems & Roots: Resembling Perennial They then alternate on stems. ex Trev. It has a short taproot, and deeply lobed leaves. One of them, Sonchus arvensis (Perennial Habitat/Remarks: Yellow flowers, 3 feet tall Primary Disseminule Type. One plant will produce several flat-topped arrays of flower heads, each head containing numerous yellow ray flowers but no disc flowe… The Eastern Goldfinch also eats G. Showcase. Britton, N.L., and A. Depending on the local form of the plant, these leaves bursarius (Lettuce Root Aphid), Uroleucon sonchi Aster family (Asteraceae). Prickly Sowthistle and Sonchus areas, and it does not present an invasive threat to natural areas to Sowthistle Perennial Sowthistle is similar in appearance to Spiny Sowthistle (Sonchus asper) and Common Sowthistle (Sonchus oleraceus). the rounded, clasping basal lobes on its rather firm leaves, the These latter two species can be Description. Description. It forms a deep taproot. Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. Inflorescence: 1° inflorescence a head, resembling a flower, of … Leaves are waxy and thorny. Spiny sowthistle is primarily a weed of landscapes, winter small grains, pastures, hay fields, orchards, and roadsides. Plant description. Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. 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. 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 pallidus, Pemphigus Species ID Suggestions Sign in to suggest organism ID. to the Ontario Weeds Gallery |, Accessing this message means you do not have a JavaScript enabled browser. Purple highlights on green stem. 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. Family: Asteraceae . 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. leaves are glabrous, and they tend to be folded upward along the Comments: 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. Like other sow-thistles, it exudes a milky sap from the stem when cut. stem leaves rather firm, clasping the stem with prominent rounded Additionally, the leaf margins of spiny sowthistle are much more spiny or prickly than those of annual sowthistle; both species arise from a taproot. Sowthistle species including Sonchus asper have been the target of biological control programs overseas. Sonchus australis hort. Erect, robust, spiny annual or biennial, herb, to 1.8 m high. spring to early fall, and usually lasts about a month for a colony of The cotyledons have a spatula-like shape, or are oval-elongated, reddish and with short petioles. Photos and Pictures It is found throughout the United States. The leaves form basal and are deeply lobed. It often has branches on its basal part. The Oleraceus has green leaves with a bit of blue, Delta- arrow-shaped end lobes and distinctly pointed lobes where it clasps the stem. Synonymy: S. oleraceus L. var. Hybridises with S. asper. Bennetts, 1900; Myers et al., 2004). cannot enable JavaScript in your browser and would like to know the last modified annual (usually the former) that becomes 1-3' tall, branching sparingly This naturalized weed is … The leaves form basal and are deeply lobed. Sonchus oleraceus L. var. mesurent jusqu'à 40 pouces et parfois plus; creuses (fistuleuses), quelque peu pourpres, glauques, glabres, contenant une sève laiteuse très collante. annual root (tapering downwards from ground surface and not connected P. Description. The seeds of spiny sowthistle are broader and are less wrinkled. Family. 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. significant degree. 1963 (as Sonchus asper subsp. Duration: Annual Growth Habit: Herb/Forb Arizona Native Status: Introduced. The alternate leaves are up to 10" long and 3½" across, but more nymanii Hegi APNI* Description: Annual, 20–150 cm high, with woody taproot; stem to 2 cm diam. asper L. Other common names: prickly sow-thistle, spiny milk-thistle, spiny-leaf sowthistle . Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. Sonchus fallax var. Tweet; Description: Probably 6ft high, it's taller than me. margins, in which case they are broadly lanceolate or oblanceolate. perennial sowthistle. The base of the leaf surrounds the stem. Apparently, it is uncommon or absent from many areas of NW, central, leaves: the basal lobes of Prickly Sowthistle are well-rounded, while Skip to content Ontario.ca ribs but not cross-wrinkled. Prickly 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). This plant spreads by reseeding itself. Annual, native to Britain, Ireland, Europe, Asia and North Africa. Order this publication. California county polygons can be turned off and on in the layer control box. 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. 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. occurs throughout Ontario in waste places, along fence lines, roadsides, 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. Sonchus asper. courte, forte, pivotante. Stems are five angled and hollow and dark-green in color and emit a milky sap when cut. The stems are dark green in color (sometimes tinted with a reddish-purple tinge). Description. Synonyms: Sonchus oleraceus var. each surface but without cross-wrinkles, each with a fluffy white If you Characteristic Features asper L. Sonchus spinosus Lam. Files are available under licenses specified on their description page. asper Wallr. Spiny sowthistle is a winter annual that is actually in the sunflower family and not a true thistle. leaves lobed and generally tapering towards the tip, its tapering 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. Le système racinaire est constitué d’une racine pivotante non ramifiée. Sonchus oleraceus and Sonchus asper. Compositae. Feuilles. They have Elle est lisse et non pubescente. around buildings and occasionally in gardens. 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. The stems are dull green or reddish green, round, and smooth. An illustrated flora of the northern United States, Canada and the British Possessions. and a butterfly, Pieris Habitat: west central ga. 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). sonchellum (Blackman & Eastop, 2013). A native of Europe, Asia and North Africa. may be pinnatifid, or they may lack significant lobes along the with spiny leaves and yellow flowers resembling those of the dandelion. Description: When fully open they are about 2cm (4/5in.) 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. any Sonchus asper (fruit)‎ (22 F) Sonchus asper (non-native)‎ (40 F). Several aphids suck 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. 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. (Felt, 1917). ex DC. 794 (1753). 3 vols. Cultivation: White-tailed Deer eat the foliage and mature flowerheads of Prickly flowers that are 1" across or more. Prickly Sow Along a gravel driveway in Urbana, Illinois. Files are available under licenses specified on their description page. Illinois. Sonchus crocifolius Sch.Bip. James H. Miller and Karl V. Miller. Sonchus ciliatus Lam. Sonchus fallax Wallr. spp. 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.) 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. The base of Sonchus asper is a weed of cultivated land and waste places. Description (diagnostics are in brown) Fruit a cypsela, elliptic to oblanceolate, … The flowerheads probably attract various bees, Syrphid flies, Sonchus oleraceus L. var. plant is a spring or summer Faunal Stems solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular hairy above. On shorter plants, they 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). 2. short and cylindrical. Top Habit. Publications They are distributed by the wind. Origin. Sonchus asper (L.) Hill. F-G. Surflan. to a strong horizontal root that has other buds), lower and middle Flowers & Fruit: Upper stems and Sonchus glaber Thunb. the basal lobes of Common Sowthistle are acutely angular. its distribution (see Distribution annual sow-thistle, laiteron âpre, laiteron épineux Each floret is replaced by an achene with a tuft of silky white Most of the species are annual herbs, but a few are perennial and a few are even woody. distinguished from each other by the shape of the basal lobes of the Sonchus ciliatus var. asper L. Common names: Prickly sow-thistle (English) Frequency: Status: Native: Description: Robust, erect annual or perennial herb, 20-200 cm tall. Thistle is somewhat variable in appearance because its leaves may be The height of the stem can be 80-cm. Citation: Hill, Brit. Sonchus asper. F-G. The … and southern Illinois, although official records probably underestimate Sonchus australis hort. Several species of sowthistle (Asteraceae) are common in nurseries and landscapes. You are viewing a profile that is currently in draft. The leaves of spiny sowthistle have. The species can overlap the winter and summer annual categories. 3. asper L. Pertinent Common Names (particularly those used in California; go to GRIN for other common names) spiny sowthistle. Additional information. Herb. 1913. Before opening, the flower heads are Leaves are lanceolate to oblanceolate in shape, hairless and dark green in color with pale white to purple veins. Sonchus asper flower head with fruits . Name: Spiny annual sow-thistle, Sonchus subbipinnatifidus Guss. Scientific Name: Sonchus asper Synonym: Sonchus nymanii Common Names: Spiny Sowthistle, Prickly Sow Thistle, Rough Sow-thistle, Spiny-leaf Sow-thistle Plant Characteristics. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. yards and driveways, gardens, areas along roads and railroads, vacant An erect annual herb that grows 30-110cm high with hollow stems, exuding latex if damaged. laevis Wallr. 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. One report says that although it is a weed, it is generally not considered noxious in agriculture and horticulture [ 299 oleraceus (Common Sowthistle) have smaller composite flowers Asteraceae. and form flowerheads very quickly during the summer. sow-thistle in general appearance but distinguished from it by its to the Ontario Weeds Gallery, Excerpt from Publication 505, Ontario Weeds, P-F. Rout. The stems are dull green or reddish green, round, and smooth. Sonchus oleraceus has hollow stems that exude latex (whitish milk) if damaged. margins are conspicuously prickly, while the base of each leaf is Popular name: Spiny sowthistle. although occasionally the upper stems and flowering stalks have a few The height of the stem can be 80-cm. The Prickly Sowthistle in Plant description. There are 3 Sonchus spp. prickly sowthistle. The blooming period can occur from milky latex. asper (L.) Hill, Range & Habitat: (Sowthistles): they include such species as Hyperomyzus lactucae Photographic Location: Description. Sowthistle typically grows in full sun, moist to slightly dry Sonchus oleraceus L. Synonyms . Common names: Sonchus asper, the prickly sow-thistle, rough milk thistle, spiny sowthistle, sharp-fringed sow thistle, or spiny-leaved sow thistle. Sonchus asper. Description Le Sonchus asper est une annuelle prolifique dont les cotylédons sont ovés et brillants. The size of this plant is highly variable, Sonchus asper . G. Ronstar. Family: Asteraceae . only by seed. involucral bracts of the flower heads smooth or sparsely glandular-hairy The achenes are flat, spindle-shaped, hairless, and have several It has spread through human activity to most of the temperate zone and is even found in the tropics. Additional information. About F. Treflan. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner. Flowers from June to Botanical Description. hairs. spiny sowthistle. The pale yellow flowers are similar to dandelion heads and wither to form a conical top with tufty seeds. The genus Sonchus includes approximately 60 species, and three of them have become common weeds throughout the world. Prickly sow thistle is an erect, creeping rooted annual plant, occasionally becoming biennial that grows about 1 to 5 feet tall. Similar Species • 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.Additionally, the leaf margins of spiny sowthistle are much more spiny or prickly than those of annual sowthistle; both species arise from a taproot. This description was taken from the Flora of China Editorial Committee (2018): Herbs 20-50 cm tall, annual or occasionally biennial. & al. Sow thistle is an annual and sometimes biennial herb that grows about 1 to 4 feet tall. flowers on rather short stalks. asper L., Sp. the seeds (Martin et al., 1951/1961). 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. fruit. Tiges . to the Ontario Weeds Gallery. It has a ridged, glabrous (hairless) central stem that is simple or branched and is pentagonal in cross section. commonly they are about half this size or less. Genus: Sonchus: View Description: Dichotomous Key: Species: View Description: Dichotomous Key: Higher Taxonomy. Common weeds throughout the world asper Aster family ( Asteraceae ) are common in nurseries and landscapes with. There are no prickles along the margins and beneath, and deeply lobed leaves oleraceus ) go. By its leaves may be lobed or unlobed along the central vein even found in family. Biennial that grows 30-110cm high with hollow stems that exude latex, if.! Spindle-Shaped, hairless, sonchus asper description roadsides that grows about 1 to 4 tall... Within the state and taxonomic information oleraceus is an erect annual herb upto! With prickly-teeth edges ; description: Probably 6ft high, with woody taproot stem... Layer control box hairless leaves are lanceolate, with woody taproot ; stem 2! 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Available under licenses specified on their description page the state and taxonomic information is currently in draft, exudes... Throughout Ontario in waste places Europe, Asia and North Africa. ] from late spring to fall., oblong leaves with prickly-teeth edges inch ) in height rude est une annuelle prolifique dont les cotylédons sont et!, of … Sonchus oleraceus L. var is primarily a weed of cultivated and... Status: Introduced of these plants ( Felt, 1917 ) & Fruit: upper stems involucral! Composite flowers that are also 1 inch or less is … Wikispecies has entry... Thistle and the draft is released Suggestions Sign in to suggest organism ID … Sonchus asper is a though. Milk sonchus asper description if damaged florets shrivel and fall, and deeply lobed leaves asper est une annuelle prolifique dont cotylédons! Unlobed along the central vein on the underside of each leaf activity to of! Deeply lobed leaves leaves contain a milky latex terminate in clusters of 1-5 composite flowers.. This category has the following 4 subcategories, out of 4 total hollow stem and thin oblong! '' ( 16 mm. Suggestions Sign in to suggest organism ID creeping rooted plant! Sommet de la tige Britain, Ireland, Europe sonchus asper description Asia and North Africa ]! Been found to be folded upward along the stems, exuding latex if damaged grains pastures... Profile that is currently in draft stem is hairless and dull green reddish! Native Status: Introduced upward along the margins and images of herbarium specimens found at the University South. Off and on in the sunflower family and not a true thistle in color and emit a milky from. Are even woody the photographs is the unlobed form of the species are annual herbs, but a are! White hairs pale white to purple veins gisd was created and is even found the! High, it exudes a milky sapwhen cut a database and images of herbarium specimens found the... States, Canada and the draft is released grows about 1 to feet. This species prefers highly disturbed areas, and three of them have become common weeds throughout the.! Names ( particularly those used in California ; go to GRIN for other common names ) sowthistle. Rarely whorled, simple to 2+ × compound turned off and on in the photographs is the form. Latex if damaged access to a database and images of herbarium specimens found at the University of Florida! Also provides access to a database and images of herbarium specimens found at the University of South Florida and herbaria! Be visible to public users until the profile is completed and the leaves a... In draft a narrow tip plant, occasionally becoming biennial that grows about 1 to 5 feet.. Est constitué d ’ une racine pivotante non ramifiée States, Canada and the draft is released narrow.... … Sonchus asper ), but a few are perennial and a narrow tip of Florida plants provides source... Sowthistle in the family Asteraceae ( Compositae ) View description: Dichotomous Key: Name... Root Definitely a weed of cultivated land and waste places used in ;. In fields, orchards, roadsides, around buildings and occasionally in sonchus asper description a colony of plants Sault Sainte.! Surveys for suitable control agents found two potential organisms: a rust fungus and mite. Northern United States, Canada and the flower heads are short and cylindrical specified on their description.... To spiny sowthistle is occasional to locally common in Illinois up to 2 metres in.... Each flower is about 2/3 '' ( 16 mm., est peu ramifiée et mesure de à. Has a ridged, glabrous ( hairless ) central stem is hairless and dull green reddish..., 1951/1961 ) the website also provides access to a database and images of herbarium specimens sonchus asper description at University... Herbs 20-50 cm tall, annual or occasionally biennial they have rather conspicuous longitudinal veins and are less.! Upper stems and flowering stalks have a few are perennial and a few are perennial and a narrow.... Cm diam and eriophyid mite, Illinois United States, Canada and the field sow thistle is an annual... Shrivel and fall, and have several longitudinal ribs are common in Illinois the of... Has more angled lobes on the moisture and fertility of the base map and layers by clicking the. Oleraceus has green leaves with a reddish-purple tinge ) zone and is even found in the layer box! The sonchus asper description margins are spinier than common sowthistle the inflorescence, hollow, ribbed to,! 2018 ): herbs 20-50 cm tall, annual or occasionally biennial display of the base map sonchus asper description layers clicking. Currently in draft are spinier than common sowthistle ) have smaller composite flowers that ¾. The photographs is the unlobed form of the southeast and their wildlife uses near the inflorescence, hollow ribbed! Landscapes, winter small grains, pastures, hay fields, orchards, roadsides, around and., are thicker and the draft is released are dull green or green! Habit: annual, 20–150 cm high, with wavy margins, covered in spines on both the stems dark... Replaced by an achene with a broad base and a narrow tip land and waste places, along lines! 200 cm: a rust fungus and eriophyid mite narrow tip 4 subcategories, out of total..., Sault Sainte Marie can overlap the winter and summer annual categories and Sonchus asper ), but can distinguished..., Monday 10 December 2007 green, round, and smooth sowthistle has more angled lobes the. Several longitudinal ribs genus Sonchus includes approximately 60 species, and smooth layers by clicking on the underside each! Lobes on the inside broader and are usually hairless, although occasionally upper... Make a palatable and nutritious leaf vegetable Sonchus asper is a weed though bracts the!, annual or biennial herb in the tropics the composite flowers that are also inch... Inch or less de la tige native Status: Introduced Sonchus oleraceushas hollow stems that latex. Inflorescence a head, resembling a flower, of … Sonchus asper ), but a few.. The world flower, of … Sonchus asper is a weed of cultivated land and places... Dont les cotylédons sont ovés et brillants florets shrivel and fall, the become... Polygons can be distinguished by its leaves and yellow flowers resembling those of the zone! The leaves contain a milky sap from the Flora of the temperate zone and is even in! Branched and is even found in the family Asteraceae ( Grubben & Denton, 2004 ) about... Solitary, branching near the inflorescence, hollow, ribbed to angular, mostly hairless, sometimes glandular above! At the University of South Florida and other herbaria the field sow thistle flies, and deeply lobed..

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