Flora of North America species comparison

internodes 4-lined at first, then 2-lined to terete.

internodes narrowly 4-winged at first, then terete.

blades linear-elliptic or linear-oblong to linear, 20–35 × 3–5 mm (main stem), base not articulated, narrowly cuneate to rounded, margins recurved to revolute, apex obtuse to acute, midrib unbranched.

blades ovate-lanceolate or elliptic to linear-oblong, 30–70 × 7–25 mm, base not articulated, cuneate to subcordate, margins plane, apex obtuse to rounded, midrib with to 6 pairs of branches.

obconic, (1–)3–20-flowered, ± widely branched, sometimes with single flowers at immediately proximal nodes.

corymbiform to rounded-pyramidal, 7–45-flowered, narrowly branched, sometimes with 1–7(–40)-flowered dichasia from 1–3 proximal nodes.

15–20 mm diam.;

sepals persistent, not enclosing capsule, 5, ovate-lanceolate to lanceolate, ± foliaceous, unequal, 5–8(–15) × 2–3(–8)mm;

petals 5, yellow, curved-dolabriform, 10–13 mm;

stamens deciduous, 120–200;

ovary 3-merous.

15–20 mm diam.;

sepals deciduous, not enclosing capsule, 5, oblanceolate-spatulate to narrowly triangular, unequal to subequal, 2–5 × 1–1.5 mm;

petals 5, pale or coppery yellow, oblanceolate-oblong to elliptic-oblong, 6–8(–10) × 3–4 mm, length 2–3 times sepals;

stamens persistent, 80;

ovary 3(–4)-merous, placentation incompletely axile.

ovoid-conic, rostrate, 4–9 × 3–4 mm.

broadly ellipsoid to ovoid-globose, 3.5–7 × 3–5 mm.

carinate, 1.5–1.8 mm;

testa reticulate-scalariform.

markedly carinate, 1.5–2 mm;

testa ± scalariform-reticulate.

= 18.

= 18.