Flora of North America species comparison

internodes 4-angled.

internodes usually weakly 2-lined, sometimes not lined, without black glands, rarely with reddish glands.

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.

usually spreading, rarely erect, sessile or (proximal) subpetiolate;

blade oblong-elliptic or elliptic to triangular-ovate or (proximal) obovate, 12–28(–32) × 6–15(–18) mm, base subcordate to rounded or (proximal) cuneate, margins plane, apex obtuse to rounded, midrib with 4–5 pairs of branches, tertiary veins not densely reticulate, black glands intramarginal (± dense) and, rarely, (1–2) laminar (distal).

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

cylindric to narrowly pyramidal, (1–)8–20-flowered.

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.

6–15(–25) mm diam.;

sepals not or scarcely imbricate, erect in fruit, ovate to lanceolate or narrowly oblong, unequal to subequal, 2.5–5.5 × 1–2 mm, apex acute to rounded;

petals golden yellow, sometimes red-tinged, oblanceolate, 7–12 mm;

stamens 50–90(–109);

anther gland black;

styles 2–8 mm.

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

oblanceoloid, 6–10 × 3.5–6 mm, with longitudinal vittae.

0.5–0.6 mm;

testa linear-scalariform.

not carinate, (0.5–)0.7–0.8 mm;

testa linear-reticulate.

= 16.

= 16.