Flora of North America species comparison

internodes 4-angled.

internodes 4-lined.

spreading, sessile or amplexicaul;

blade paler abaxially, ovate, elliptic, or elliptic-oblong (proximal), ovate or suborbiculate to elliptic or lanceolate (mid and distal), 3–27(–40) × 1–15 mm, papery to membranous, margins plane, apex obtuse to rounded, basal veins 3–5, midrib with to 3 pairs of branches.

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.

cylindric, 5–60-flowered, branching mostly dichasial;

bracts linear-subulate.

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

3–5 mm diam.;

sepals lanceolate to linear-lanceolate or elliptic-oblong to oblanceolate, equal or unequal, 2–4.5 × 0.6–1.5 mm, margins sometimes ciliate, not setulose-ciliate, apex usually acute to apiculate, sometimes obtuse to rounded;

petals pale yellow, oblong, 1.7–3.5 mm;

stamens 5–16, scarcely grouped;

styles 0.5 mm;

stigmas broadly capitate.

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.

narrowly ovoid to cylindric-ellipsoid, 2–5 × 1.6–2.4 mm, usually broadest at or near middle.

ellipsoid to globose, 4–7 × 3.5–5 mm.

0.4–0.7 mm;

testa finely linear-scalariform.

carinate, 0.6–0.7 mm;

testa scalariform-reticulate.

= 16, 18.