Flora of North America species comparison

developed;

roots short, fibrous, lignescent, non-tuberiferous.

developed, spongy;

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.

mostly unbranched, 6–11(–20) cm, faces equal, terete proximally, distal internodes somewhat flattened in a plane parallel to subtending leaf pair, longitudinally striate, narrower bands paler and aligned with leaf midribs, internodes and nodes glabrous.

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.

subsessile;

blade lanceolate-ovate to lanceolate or elliptic, 3.5–7.5 cm × 4–15 mm, margins entire or subentire, teeth low, remote, blunt, not bristle-tipped, surfaces glabrous.

diffuse, not obscured by bracts.

diffuse, not obscured by 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 subglobose to ovoid, longer than the constricted neck, 7.5–10 mm, hirsute, hairs gland-tipped;

calyx lobes triangular, apices narrowed to linear-oblong extensions;

petals spreading, lavender-rose, 2–2.5 cm;

anthers curved, 7–8 mm.

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

cuneate-prismatic, 1–2 mm, surfaces nearly smooth.

= 44.

= 22.