Sickle Tickseed (Coreopsis falcata Boynt.)
↑Notes
POWO/INPI treats this as merged into coastal plain tickseed (Coreopsis gladiata), following the treatment of Gleason & Cronquist (1991) in Manual of Vascular Plants of Northeastern United States and Adjacent Canada, Second Edition as well as Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990).
However we treat this taxon as a separate species; Alan Weakley in his Flora of the Southeastern US asserts that it "should not be included" in C. gladiata because of differences in habitat preferences, morphology, phenology, and distribution. BONAP also considers them distinct species.
↑Links & External Resources
• Coreopsis falcata (sickle tickseed) | USDA PLANTS Database (About This Site)
• Coreopsis falcata | Biota of North America Project (BONAP) (About This Site)
• Coreopsis falcata | NatureServe Explorer (About This Site)
• Coreopsis falcata Boynton (Pool Coreopsis) | Digital Atlas of the Virginia Flora (About This Site)