Vascular Plants of North Carolina
Account for Smooth Rattlebox - Crotalaria pallida   Aiton
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Section 6 » Order Fabales » Family Fabaceae
AuthorAiton
DistributionCoastal Plain and Sandhills; Randolph and Catawba counties in the Piedmont.

Native of Africa; in N.A. -- VA to FL and MS.
AbundanceFrequent, except rare in the Piedmont.
HabitatFallow fields, crop fields, roadsides, waste ground, etc.
PhenologyFlowering July-September.
IdentificationSmooth Rattlebox is erect, and leaves are divided into 3 obovate leaflets. All other rattleboxes in NC have either lanceolate leaves that are trifoliate, or all leaves are unifoliate. The pod is conspicuously curved, versus straight in C. incana, which is not in the NC flora.
Taxonomic CommentsOur plants are var. obovata. The name C. mucronata has in the past been misapplied to this plant.

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State RankSE *
Global RankGNR
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