Vascular Plants of North Carolina
Account for Slender Vervain - Verbena rigida   Sprengel
Members of Verbenaceae:
Members of Verbena with account distribution info or public map:
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Section 6 » Order Lamiales » Family Verbenaceae
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DistributionPrimarily in the Coastal Plain; also Anson and Randolph counties in the eastern Piedmont. First collected in 1935 in Washington County.

Native of South America; in N.A. VA to FL, TX, and OK; also CA, AZ, UT.
AbundanceInfrequent to locally fairly common in the Coastal Plain, but rare in the Piedmont.
HabitatRoadsides, railroad margins, fallow fields, open woods.
PhenologyFlowering and fruiting late March-July.
IdentificationThis vervain is a fairly familiar low-growing one in the Coastal Plain. It can be erect or reclining, with stems up to 2 feet long. The plants grow from elongate, horizontal, underground stolons -- a notable feature that separates it from our other vervains. The leaves are lanceolate to narrowly elliptical, serrated, and clasping at the bases. The flowers are bright rosy or purple on spikes that are 1-2.5 inches long, with each inflorescences being rounded/ball-like.
Taxonomic Comments
Other Common Name(s)Tuber Vervain, Stiff Vervain, and many other names
State RankSE
Global RankGNR
State Status
US Status
County Map - click on a county to view source of record.
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B.A. SorrieEscaped to roadside, SE part of county, 8 May 2017. CumberlandPhoto_non_natural
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