Flora of North America species comparison

internodes 4-angled.

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.

deciduous (base articulated) or persistent (base not articulated).

loosely corymbiform, 1–14-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.

3–15 mm diam.;

sepals persistent, (4–)5;

petals persistent, (4–)5;

stamens persistent, (5–)10–80, usually in continuous or interrupted ring, sometimes in 5 barely discernable fascicles, each of 1–2 stamens;

ovary (2–)3(–4)-merous;

placentation parietal;

styles ± spreading, bases distinct;

stigmas capitate or clavate.

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

0.5–0.6 mm;

testa linear-scalariform.

not carinate.

= 16.