Flora of North America species comparison

developed;

roots short, fibrous, lignescent, non-tuberiferous.

developed;

roots short, fibrous, lignescent, non-tuberiferous.

branched proximally, 10–40 cm, faces subequal, flat to convex, 4-angled distally from midstem, internodes and nodes hirsute, hairs eglandular.

unbranched or few-branched, 10–50 cm, faces subequal, flat to convex, angles weakly ridged, internodes glabrous, nodes sparsely hirsute, hairs eglandular.

subsessile;

blade spatulate to oblanceolate or elliptic, 2–3 cm × 2–8 mm, 2 lateral veins marginal on narrower leaves, margins subentire to shallowly serrate, surfaces loosely strigose, hairs yellowish.

petiole 0.5–1.5 mm;

blade ovate to short-elliptic or suborbiculate, 1–2 cm × 4–14 mm, margins serrate, surfaces glabrous abaxially, sparsely villous adaxially.

diffuse, not obscured by bracts.

condensed, mostly obscured by foliaceous bracts.

hypanthium globose, much longer than the constricted neck, 6–7 mm, hirsute to villous, eglandular;

calyx lobes triangular, apices aristate;

petals ascending, golden-yellow, 1–1.5 cm;

anthers straight, 2 mm.

hypanthium globose, much longer than the constricted neck, 5–7(–9) mm, mostly glabrous except along calyx lobes;

calyx lobes oblong-lanceolate, apices acute, spreading-ciliate, eglandular;

petals ascending to divergent, lavender-rose, 1–2 cm;

anthers straight, 1.2–1.8 mm.

0.7 mm, surfaces with few straight ridges of papillae along crest, sides with lower, more scattered papillae or ± smooth.

0.6 mm, surfaces pebbled or with ridges of domelike processes.

= 44.

= 22.