Flora of North America species comparison

spreading [erect], minutely hairy [to glabrescent], not viscid.

stipules usually early-deciduous leaving annular scars, prominent, oblong, enclosing terminal bud;

blade broadly ovate [orbiculate, elliptic], not dissected or parted [3-lobed], base deeply cordate [rarely cuneate], margins usually entire (sometimes obscurely crenulate or denticulate), with nectaries near base abaxially.

axillary, solitary flowers;

involucel present, bractlets persistent, connate.

flowers sometimes aggregated distally with reduced leaves;

involucel cupuliform.

minutely stellate-hairy;

involucellar bractlets connate.

calyx persistent, splitting asymmetrically, not accrescent or inflated, lobes often ribbed, triangular to ovate, not gland-dotted;

corolla campanulate, yellow, fading to orange or red, sometimes drying dark greenish;

staminal column included;

style 5-branched from or beyond orifice or staminal column;

stigmas capitate.

calyx deeply divided, 1.5–2 cm, lobes not gland-dotted, densely stellate-hairy, with nectary on each midrib;

staminal column pallid, apically 5-dentate, glabrous;

style emergent from staminal column;

stigmas 5.

capsules, erect, not inflated, carpels 5, subglobose or ovoid, not indurate, not fleshy, densely hairy, dehiscent.

5-locular, 1.5–2 × 1.5–2 cm, subequal to calyx, antrorsely hairy, hairs yellowish or brownish.

2–many per carpel, densely hairy or seemingly glabrous.

4 mm, minutely papillate.

= 40–48.