Sonchus arvensis subsp. arvensis

unknown
Treatment appears in FNA Volume 19. Treatment on page 274.
Revision as of 19:36, 24 September 2019 by FNA>Volume Importer

Peduncles stipitate-glandular. Phyllaries stipitate-glandular, longer 14–17 mm. 2n = 54.


Phenology: Flowering Jul–Sep.
Habitat: Disturbed sites, mostly wet, particularly in urban areas, roadside ditches, along streams
Elevation: 0–1600. m

Distribution

V19-377-distribution-map.gif

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., Alaska, Calif., Colo., Conn., Del., Idaho, Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nev., N.H., N.J., N.Y., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Utah, Vt., Wash., Wis., Wyo., Europe, widely introduced elsewhere.

Discussion

Subspecies arvensis is considered a noxious weed in California, Idaho, Illinois, Iowa, Maryland, Minnesota, Nevada, North Dakota, South Dakota, and Wyoming.

Selected References

None.

Lower Taxa

None.
Philip E. Hyatt +
unknown +
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. +, Alaska +, Calif. +, Colo. +, Conn. +, Del. +, Idaho +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, Nev. +, N.H. +, N.J. +, N.Y. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.Dak. +, Utah +, Vt. +, Wash. +, Wis. +, Wyo. +, Europe +  and widely introduced elsewhere. +
0–1600. m +
Disturbed sites, mostly wet, particularly in urban areas, roadside ditches, along streams +
Flowering Jul–Sep. +
Introduced +
Undefined tribe Lactuceae +
Sonchus arvensis subsp. arvensis +
Sonchus arvensis +
subspecies +