Flora of North America species comparison

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

internodes 6-lined at first, becoming 4-lined, then terete.

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.

blades linear-subulate, 4–11 × 0.4–0.8 mm, base articulated, persistent, parallel or slightly expanded, margins revolute, apex rounded with ± prominent hydathode to long-acuminate, midrib unbranched.

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

± narrowly cylindric, 1–7-flowered, with 1(–3)-flowered dichasia from to 4 proximal nodes, rarely with 1 pair of flowering branches;

flowers sessile or nearly so.

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.

10–14 mm diam.;

sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, 2–4 × 0.4–0.5 mm;

petals 5, bright yellow, oblanceolate-oblong to obovate, 5–10 mm;

stamens deciduous, 50–90;

ovary 3-merous.

cylindric-conic, 6–15 × 4.5–8 mm.

narrowly (sub-)cylindric, (4–)5.7–9.5 × 1.5–2 mm.

scarcely carinate, 1.8–2 mm;

testa finely scalariform-reticulate.

scarcely carinate, 0.5 mm;

testa coarsely reticulate.

= 18.