Flora of North America species comparison

internodes 4-angled.

internodes 4-lined, scabrous-tomentose to pilose.

spreading, sessile or subamplexicaul;

blade ovate or orbiculate to elliptic or oblanceolate (proximal) or oblong (distal), 3–13 × 1.5–8.5 mm, papery to membranous, margins plane, apex rounded, basal veins 3–5(–7), distally looped, midrib unbranched.

appressed to ascending, sessile;

blade narrowly ovate or lanceolate to narrowly oblong-elliptic (or proximal oblanceolate), 4–15 × 1.5–7 mm, subcoriaceous, margins recurved, apex acute to obtuse, surfaces scabrous-tomentose to pilose, basal veins 1(–5), midrib with 0–1 pair of branches.

loosely corymbiform, 1–14-flowered, branching mostly dichasial.

cylindric to subcorymbiform, to 30-flowered, branching mostly dichasial.

3–5(–8) mm diam.;

sepals usually narrowly elliptic-oblong to oblanceolate-spatulate, rarely obovate, unequal, 2–4 × 0.9–2 mm, margins sometimes ciliate, not setulose-ciliate, apex subacute to rounded;

petals golden yellow to salmon-orange, oblanceolate, (1.7–)3.5–5 mm;

stamens (5–)12–15(–25), separate or obscurely 3-fascicled;

styles 0.5–2 mm;

stigmas scarcely capitate.

5–11 mm diam.;

sepals ovate to ovate-lanceolate or obovate, subequal, 2.5–5 × 1.5–2.5 mm, margins setulose-ciliate, apex acute;

petals 5, deep yellow, obovate, 4–7 mm;

stamens (15–)20–40, filaments almost distinct;

styles 1.5–2 mm;

stigmas ± broadly capitate.

ellipsoid to cylindric or subglobose, 2.5–5 × 1.7–2.5 mm.

ovoid to ellipsoid-subglobose, 3.5–5 × 2–3 mm.

0.5–0.6 mm;

testa linear-scalariform.

0.4–0.6 mm;

testa linear-reticulate.

= 16.

= 12.