Flora of North America species comparison

internodes 4-lined.

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

blades oblong-ovate to triangular-lanceolate, 8–40 × (5–)7–20 mm, base articulated, subcordate-amplexicaul, margins recurved, apex rounded, midrib with 3 or 4 pairs of branches.

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).

hemispheric to ± flat-topped, 7–30-flowered, widely branched, with flowers or flowering branches from to 3 proximal nodes.

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

15–25 mm diam.;

sepals persistent, not enclosing capsule, 5, ovate to lanceolate, unequal to subequal, 5–8 × 2–4.5 mm;

petals 5, bright yellow, obovate to oblong-lanceolate, 8–15 mm;

stamens deciduous, 200;

ovary 3(–4)-merous.

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.

pyramidal-ovoid, 5–6 × 3–4 mm.

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

narrowly carinate, 1 mm;

testa shallowly linear-reticulate.

not carinate, (0.5–)0.7–0.8 mm;

testa linear-reticulate.

= 18.

= 16.