Flora of North America species comparison

internodes 4-angled.

internodes 4-lined.

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.

appressed, sessile;

blade linear-subulate, (1–)2.5–4 × 0.2–0.3 mm, subcoriaceous, margins incurved, apex acute, basal vein 1, midrib unbranched.

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

subcorymbiform, to 13-flowered, branching mostly dichasial.

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.

3–4 mm diam.;

sepals ovate to elliptic or narrowly oblong, unequal, 1.5–2 × 0.6–1 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to subacute;

petals yellow, obovate-oblong, 3.5–5 mm;

stamens 20–25, irregularly arranged;

styles 1.5–2 mm;

stigmas capitate.

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

narrowly ovoid-conic, subrostrate, 3.5–6 × 1–1.5 mm.

0.5–0.6 mm;

testa finely linear-scalariform.

0.5–0.6 mm;

testa scalariform-reticulate.

= 16.

= 12.