Flora of North America species comparison

erect, minutely stellate-hairy, hairs to 0.5 mm.

ascending to erect, with stellate 0.1 mm hairs and glandular hairs.

stipules free from petiole, 1-veined, subulate, 3–6 mm, 1/2 as long as petiole;

petiole 5–15 mm, usually 1/4–1/2 length of blade, sometimes shorter, minutely stellate-hairy, hairs to 0.5 mm, usually with small spinelike tubercle on stem just below its attachment;

blade ovate, lanceolate, or narrowly oblong, 2–6 cm, smaller apically, 2–5 times longer than wide, base subcordate, margins crenate-serrate to base, apex usually acute, surfaces stellate-tomentulose abaxially, glabrate adaxially.

stipules free from petiole, 1-veined, subulate, 3–4 mm, 1/2–1 times length of petiole;

petiole 6.3–40 mm, 1/4–1/2 length of blade, minutely stellate-hairy;

blade narrowly linear, 2.5–8 cm, 6–20 times longer than wide, base truncate, margins dentate to base, apex subacute, surfaces stellate-hairy.

axillary solitary or 2–4 clustered flowers.

axillary solitary flowers.

0.5–1 cm, subequal to calyx and subtending petiole.

slender, 8–12(–16) cm, usually 2+ times length of subtending leaves, much longer than calyx.

calyx angulate, 5–7 mm, minutely tomentose, lobes triangular;

petals yellow, rarely white, 5 mm;

staminal column glabrous;

style 5-branched.

calyx obscurely 10-ribbed basally, 6–8 mm, stellate-hairy, lobes triangular;

petals pale orange, 12 mm;

staminal column minutely hairy;

style 8–10-branched.

subconic, 4–5 mm diam., hairy;

mericarps 5, 3–4 mm, somewhat rugose, apex spined, spines 1 mm, antrorsely hairy.

subconic, 5–7 mm diam., minutely glandular-puberulent to subglabrous;

mericarps 8–10, 3.5 mm, strongly reticulate laterally, apex muticous.

= 14, 28.