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.

ascending to appressed, sessile;

blade usually lanceolate, rarely elliptic to ovate, 5–20(–24) × 5–15 mm, shorter than internodes, smaller distally, leathery, margins plane, apex acute, gland-dotted, less conspicuously adaxially, basal veins 1–5, midrib with 2–3 pairs of branches.

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

corymbiform, to 30-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.

5–13 mm diam.;

sepals lanceolate, unequal, 3.5–4.2(–4.8) mm, margins sometimes ciliate, not setulose-ciliate, apex acute to subacuminate;

petals orange-yellow, ± obovate, 5–10 mm;

stamens 50–80, filaments basally connate;

styles 2–4 mm;

stigmas clavate.

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

ovoid, 3–4.5 mm.

0.5–0.6 mm;

testa finely linear-scalariform.

0.4–0.7 mm;

testa reticulate.

= 16.