Flora of North America species comparison

internodes 4-angled, apical internode shorter than adjacent one or almost absent.

deciduous (base articulated) or persistent (base not articulated).

spreading, sessile;

blade (concolor), broadly to narrowly oblong or elliptic to oblanceolate or round, 5–15 × 2–5 mm, papery to membranous, margins plane, apex rounded, basal veins 3–5, midrib branched or not.

cylindric to rounded-pyramidal, 1–13-flowered, branching mostly dichasial;

bracts not linear-subulate.

3–15 mm diam.;

sepals persistent, (4–)5;

petals persistent, (4–)5;

stamens persistent, (5–)10–80, usually in continuous or interrupted ring, sometimes in 5 barely discernable fascicles, each of 1–2 stamens;

ovary (2–)3(–4)-merous;

placentation parietal;

styles ± spreading, bases distinct;

stigmas capitate or clavate.

3–5 mm diam.;

sepals usually lanceolate to narrowly oblong, rarely oblanceolate, equal, 2.5 × 0.8–1 mm, margins sometimes ciliate, not setulose-ciliate, apex rounded;

petals pale yellow, oblong, 1.7–3.5 mm;

stamens 5–16, scarcely grouped;

styles 0.5 mm;

stigmas broadly capitate.

narrowly ovoid to cylindric-ellipsoid, 4–5 × 2–2.5 mm, usually broadest at or near middle.

not carinate.

0.4–0.7 mm;

testa finely linear-scalariform.

= 16 [“18”].