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Spermacoce Linnaeus. Buttonweed.

Key to Spermacoce

A genus of about 150-250 species, herbs, of tropical and warm-temperate Old and New World. Here circumscribed to include Borreria G.F.W. Meyer; additional changes in circumscription seem likely as genera in the Spermacoceae are recircumscribed.

Ref: Bacigalupo (1972); Florentin, Florentin, & Salas (2020); Franck et al. (2021); Rogers (2005); Ward (2011b). Show full citations.

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