Waltheria, IN

Weakley, Alan S., Poindexter, Derick B., Medford, Hannah C., Franck, Alan R., Bradley, Keith A., Sadle, Jimi & Kelley, John Michael, 2021, Studies In The Vascular Flora Of The Southeastern United States. Vii, Journal of the Botanical Research Institute of Texas 15 (1), pp. 23-56 : 50

KEY TO SPECIES OF WALTHERIA IN FLORIDA

1. Plant to 0.6(–1) m tall; stems prostrate, decumbent,to spreading,often several from the base of the plant; leaf blades 1–2× longer than wide,to 3.4 cm long and 2.7 cm wide,the stellate hairs of the upper blade surface not overlapping or scarcely so, the arms of the stellate hairs 0–0.3(–0.5) mm long (rarely a few arms longer); [in Florida: coastal strand, sandy pinelands or scrub,and pine rocklands]__________________________________________________________ W. bahamensis

1. Plant to 2 m tall; stems generally erect to ascending,usually solitary at the base of the plant; leaf blades (1.4–)1.8–2.2 (–3.5)× longer than wide, to 12 cm long and 6.5 cm wide, the stellate hairs of the upper blade surface strongly overlapping,the arms of the stellate hairs mostly 0.4–1 mm long; [in Florida:generally of disturbed sites] ______________ W.indica