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Sonchus oleraceus L.
SMOOTH SOW-THISTLE
Common sowthistle; Common Sow-Thistle; Annual Sow-Thistle; Hares Lettuce; Colewort; Milk Thistle; Thistle Milkweed; Milky Tassel; Swinies

Life   Plantae   Dicotyledoneae   Asteraceae   Sonchus

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Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus
Sonchus oleraceus
© Copyright Bobby Hattaway 2011 · 5
Sonchus oleraceus

Associates · map
FamilyScientific name @ source (records)
Albuginaceae  Albugo ipomoeae-panduratae @ BPI (1)
Andrenidae  Andrena chalybioides @ UCRC_ENT (1)

Andrena chlorogaster @ UCRC_ENT (2)
Aphididae  Aphis ( @ AMNH_PBI (3)

Hyperomyzus ( @ CSCA_TCN (11)

Hyperomyzus lactucae @ AMNH_PBI (7)

Macrosiphum ( @ AMNH_PBI (12)

Rhopalosiphum padi @ CSCA_TCN (1)

Uroleucon ( @ NCSU (14)
Apidae  Apis mellifera @ BBSL (1)
Coleosporiaceae  Coleosporium sonchi-arvensis @ BPI (3)

Coleosporium sonchi @ 138414A (1); BPI (23)
Entylomataceae  Entyloma bullulum @ BPI (2)
Erysiphaceae  Erysiphe cichoracearum @ BPI (5)

Oidium erysiphoides @ BPI (1)

Sphaerotheca fuliginea @ BPI (1)
Halictidae  Lasioglossum titusi @ BBSL (2)
Lygaeidae  Nysius caledoniae @ BPBM_TCN (12)

Nysius palor @ BPBM_TCN (3)
Megachilidae  Megachile subnigra @ UCRC_ENT (1)

Osmia coloradensis @ UCRC_ENT (3)
Miridae  Lygus lineolaris @ MEMU_ENT (1)
Mycosphaerellaceae  Cercospora oleraceus @ BPI (1)

Septoria sonchifolia @ BPI (3)
Peronosporaceae  Bremia lactucae @ BPI (23)

Bremia sonchi @ BPI (9)
Phaeosphaeriaceae  Leptosphaeria ogilviensis @ BPI (2)
Pleosporaceae  Alternaria sonchi @ BPI (2)

Macrosporium cladosporioides @ BPI (1)
Pucciniaceae  Miyagia pseudosphaeria @ BPI (3)

Puccinia sonchi @ BPI (6)
Rhopalidae  Liorhyssus hyalinus @ BPBM_TCN (1)
_  Ascochyta sonchi @ BPI (2)

Ascochyta tussilaginis @ BPI (1)

unknown unknown @ AMNH_PBI (14)

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FNA Vol. 19, 20 and 21 Page 273 , 274, 275 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Sonchus

3. Sonchus oleraceus Linnaeus, Sp. Pl. 2: 794. 1753.

Common sow-thistle, laiteron

Annuals or biennials , 10—140(—200) cm. Stem bases soft to hard, herbaceous, often hollow. Leaves: blades of mid cauline spatulate or oblong to obovate or lanceolate, 6—35 × 1—15 cm, bases auriculate, auricles deltate to lanceolate, ± straight, acute, margins usually pinnately (often runcinately) lobed, lobes ± deltate to lanceolate, not constricted at bases, terminals usually larger than laterals, entire or dentate. Peduncles usually glabrous, sometimes stipi-tate-glandular. Involucres 9—13+ mm. Phyllaries usually glabrous, sometimes tomentose and/or stipitate-glandular. Corollas: ligules ± equaling tubes. Cypselae dark brown, mostly oblanceoloid, 2.5—3.5+ mm, ribs 2—4 on each face, faces transversely rugulose or tuberculate across and between ribs; pappi 5—8 mm. 2 n = 32, 36.

Flowering (Apr—)Jul—Oct (year-round in south). Disturbed sites, gardens, roadsides, along streams; 0—2000 m; introduced; Greenland; St. Pierre and Miquelon; Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask.; Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kansas, Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.; Europe; introduced also in Mexico, West Indies, Bahamas, Central America, South America, Africa, Asia, Pacific Islands (New Zealand), Australia.

Updated: 2024-05-23 03:19:45 gmt
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