Flora of North America species comparison

internodes narrowly 4-winged at first, then 2-lined.

internodes 4-angled.

blades oblong to elliptic-oblong, 20–40 × 12–20 mm, base not articulated, broadly cuneate, margins usually plane, rarely recurved, apex rounded to retuse, midrib with 6 pairs of branches.

erect or spreading, sessile or subsessile;

blade linear to oblanceolate-linear or (proximal) oblanceolate to obovate, 6–55 × 0.5–5.5 mm, papery to membranous, margins plane, apex rounded, basal or near-basal veins 1–3(–5), midrib with 1–4 pairs of branches.

terminal (1–)3–5(–8)-flowered, narrowly branched.

corymbiform to cylindric, usually diffuse, 1–35-flowered, branching mostly dichasial.

15 mm diam.;

sepals tardily deciduous, not enclosing capsule, 5, spatulate to elliptic or ovate, unequal, 3–5 × 1.5–2.3 mm;

petals 5, coppery yellow, oblong, 8–10 mm length 2 times sepals;

stamens deciduous, 60–80;

ovary 3-merous, placentation incompletely axile.

5–6 mm diam.;

sepals linear-lanceolate to lanceolate, equal, 2.5–4.5 × 0.8–1 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to acuminate;

petals golden yellow, sometimes red-veined, narrowly obovate to elliptic, 2.5–4 mm;

stamens 12–25, obscurely 3–5-fascicled;

styles 0.5–0.8 mm;

stigmas broadly capitate.

cylindric-conic, 6–15 × 4.5–8 mm.

narrowly conic to conic-cylindric, 4–6 × 1.5–3 mm, broadest proximal to middle.

scarcely carinate, 1.8–2 mm;

testa finely scalariform-reticulate.

0.5–0.7 mm;

testa finely linear-scalariform.

= 16.