*Bidens alba (Linnaeus) A.P. de Candolle var. radiata (Schultz 'Bipontinus') Ballard ex T.E. Melchert. Common name: Romerillo. Habitat: Disturbed areas. Distribution: Adventive from the New World tropics. Reported for Clarksville, Montgomery County, TN (Kraft 2016).
Origin/Endemic status: Neotropics
Synonymy ⓘ: = Bah, K1, Ballard (1986); = Bidens pilosa L. var. radiata Sch.-Bip. – F, Sherff & Alexander (1955); = n/a – C, Pa; < Bidens alba (L.) DC. – Ar, Fl7, Il, NE, WH3; < Bidens pilosa L. – FNA21, K3, K4, RAB, S, SE1
Links to other floras: < Bidens pilosa - FNA21
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FAC (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
- Great Plains: FACW (taxonomic split from wetland indicator species)
- Midwest: FACW (taxonomic split from wetland indicator species)
- Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)
Heliophily ⓘ: 7
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