Flora of North America species comparison

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

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

rounded-corymbiform, 13–60-flowered, narrowly branched, without subsidiary branches.

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.

10–15 mm diam.;

sepals persistent, not enclosing capsule, 5, ovate-lanceolate to lanceolate, subequal, (2–)4–7 × 1–1.5 mm;

petals 5, bright yellow, obovate-oblanceolate, 6–8 mm;

stamens persistent, 60–80;

ovary 3-merous, placentation parietal.

cylindric-conic, 6–15 × 4.5–8 mm.

ellipsoid to ovoid-ellipsoid, 3.5–6 × 2–4 mm.

scarcely carinate, 1.8–2 mm;

testa finely scalariform-reticulate.

slightly carinate, 0.6–0.7 mm;

testa scalariform.

= 18.