Flora of North America species comparison

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

internodes 4-lined.

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.

appressed, sessile;

blade linear-subulate, (1–)2.5–4 × 0.2–0.3 mm, subcoriaceous, margins incurved, apex acute, basal vein 1, midrib unbranched.

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

subcorymbiform, to 13-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.

3–4 mm diam.;

sepals ovate to elliptic or narrowly oblong, unequal, 1.5–2 × 0.6–1 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to subacute;

petals yellow, obovate-oblong, 3.5–5 mm;

stamens 20–25, irregularly arranged;

styles 1.5–2 mm;

stigmas capitate.

cylindric-conic, 6–15 × 4.5–8 mm.

narrowly ovoid-conic, subrostrate, 3.5–6 × 1–1.5 mm.

scarcely carinate, 1.8–2 mm;

testa finely scalariform-reticulate.

0.5–0.6 mm;

testa scalariform-reticulate.

= 12.