Flora of North America species comparison

erect, puberulent to glabrate.

stipules free from petiole, 1-veined, subulate, 5–8 mm, subequal to petiole;

petiole 2–9 mm, much shorter than blade, minutely puberulent to glabrate;

blade narrowly linear to narrowly elliptic, 2–8 cm, 4–20 times longer than wide, base truncate, margins dentate to base, apex acute, surfaces minutely hairy abaxially, glabrous adaxially.

stipules free from petiole, 1-veined, subulate, 2–5 mm;

petiole 10–30 mm, 1/4–1/2 (to nearly equaling) blade length, pubescence like stem;

blade ovate to triangular, 4–9 cm, 1.5–2 times longer than wide, base cordate, margins crenate-serrate or coarsely serrate to base, apex acuminate or attenuate, surfaces sparsely pubescent, abaxial surface stellate-pubescent, adaxial surface stellate-pubescent or with simple, often antrorsely-oriented hairs.

axillary solitary flowers, scattered along stem, little, if at all, apically congested.

axillary, dense, subsessile, 3–8- glabrous or nearly so;

mericarps 5, 3 × 1.5 mm, laterally faintly striate to smooth, apex muticous.

slender, 0.5–4 cm, longer than calyx.

calyx ribbed, 6–9 mm, basally hairy, lobes ovate;

petals yellow-orange, 12–15 mm;

staminal column sparsely and minutely hairy;

style 8–11-branched.

oblate, 6–8 mm diam., sparsely hairy apically, otherwise glabrous;

mericarps 8–11, 3 mm, laterally reticulate, apex blunt to spinose, spines 0.2–1 mm.

= 32.