Flora of North America species comparison

internodes 4-lined.

internodes 4-angled.

blades broadly to narrowly elliptic or oblanceolate to oblong-elliptic, 11–35 × 3–13 mm, base not articulated, cuneate to shallowly cordate-amplexicaul, margins plane to subrevolute, apex rounded, midrib with 5–7 pairs of branches.

spreading, sessile or amplexicaul;

blade usually ovate-triangular to broadly ovate, rarely oblong (mid and distal blades lanceolate-deltate), 5–25 × 3–12 mm, papery to membranous, margins plane, apex usually subacute, basal veins (3–)5, midrib usually with 1–2 pairs of branches.

corymbiform, (1–)3–15-flowered, narrowly branched, sometimes with branches from 1–2 proximal nodes.

laxly corymbiform to cylindric, (1–)5–65-flowered, branching mostly dichasial.

12–15 mm diam.;

sepals persistent, not enclosing capsule, (4–)5, ± lanceolate to lanceolate-elliptic, ± unequal, 6–7 × 2–3 mm;

petals (4–)5, pale yellow, sometimes tinged red, obovate to oblanceolate, 6–8 mm;

stamens persistent, 70–95;

ovary 3-merous, placentation parietal.

4.5–7 mm diam.;

sepals lanceolate to narrowly ovate, equal, 3–5 × 0.8–1.2 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to acuminate;

petals bright yellow, oblanceolate, 2–4 mm;

stamens 10–14, scarcely grouped;

styles 0.5–0.7 mm;

stigmas broadly capitate.

ellipsoid to globose, 4–7 × 3.5–5 mm.

narrowly conic-ellipsoid, 3–5 × 1.5–2 mm, usually broadest at or near middle.

carinate, 0.6–0.7 mm;

testa scalariform-reticulate.

0.5–0.6 mm;

testa finely linear-scalariform.

= 16, 18.

= 16.