Vascular Plants of North Carolina
Account for Field Sowthistle - Sonchus arvensis   L.
Members of Asteraceae:
Members of Sonchus with account distribution info or public map:
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Section 6 » Order Asterales » Family Asteraceae
AuthorL.
DistributionMountains only. Collected twice: in 1958 in a railroad bed east of Canton, Haywood County; and in 2008 on a disturbed roadside in Alleghany County.

Native to Europe; in N.A. southern Canada south to NC, TN, MS, TX, CO, and CA.
AbundanceVery rare.
HabitatDisturbed roadside, railroad cinder bed.
PhenologyFlowering and fruiting June-November.
IdentificationGenerally speaking, sowthistles resemble yellow-flowered wild lettuces (genus Lactuca), but the heads are much broader. Field Sowthistle resembles Common Sowthistle (S. oleraceus), but the heads are broader (3-5 cm across vs. 1.5-2.5 cm across) and the involucres are taller (15-20 mm tall vs. 9-13 mm tall).
Taxonomic CommentsOur plants are var. glabrescens.

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State RankSE
Global RankGNR
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