Vascular Plants of North Carolina
Account for Awnless Beggarticks - Bidens polylepis   Blake
Members of Asteraceae:
Members of Bidens with account distribution info or public map:
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Section 6 » Family Asteraceae
DistributionScattered statewide. Weakley (2020) pulled this taxon back out of B. aristosa, though most references do consider both as valid species. One website editor (Sorrie) disagrees; although extremes can be told apart readily, most cannot with certainty.

Native to the Midwestern states; ranges probably adventitiously east to the East Coast.
AbundanceUncommon to infrequent, but easily confused with the very common B. aristosa; thus, true abundance is uncertain.
Habitat"Marshes, wet meadows, ditches, bogs" (Weakley 2020).
PhenologyFlowers and fruits August-October (rarely to November).
IdentificationVery similar to B. aristosa, both with large golden-yellow rays. This species has "Calyculus bractlets 12-21, these (6-) 8-12 (20) mm long; calyculus bractlets usually coarsely short-pubescent on the lower surface", whereas B. aristosa has "Calyculus bractlets 8-12 (-16), these (4-) 5-7 (-12) mm long; calyculus bractlets glabrous or fine-pubescent on the lower surface" (Weakley 2020).
Taxonomic CommentsSee above. RAB (1968) and most references have listed this as a good species, but Weakley (2018) merged it with B. aristosa.

Other Common Name(s)Ozark Beggarticks, Midwestern Beggarticks
State RankSE?
Global RankG5
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