Carphephorus subtropicanus DeLaney, N. Bissett & Weidenhamer, Bot. Explor. 1: 2, figs 1, 3. 1999

Plants with slight or no odor of coumarin or vanilla. Basal leaves less than 15 × 4 cm; midstem leaves narrowly elliptic, margins entire, apices appressed to stems. Primary head-bearing branches diverging from main axes at 30–45°. Florets mostly 10–14.

Flowering (Sep–)Oct–Nov. Burned pine savanna-flatwoods, dry prairies; 0–50 m; Fla.

Variety subtropicanus, which occurs in the southern half of Florida, is mostly allopatric with var. odoratissimus. Intergrades occur where their ranges meet (S. L. Orzell and E. L. Bridges 2002).