Flora of North America species comparison

internodes (2–)4-lined at first, then 2-lined to terete.

internodes usually 2-lined, sometimes 4-lined or not lined, with black glands scattered on and near lines or all over.

blades oblong-ovate to ovate or triangular-ovate, 5–35 × 4–15 mm, base articulated, cordate-amplexicaul, margins subrecurved, apex apiculate or obtuse to rounded, midrib with 1 pair of branches.

spreading, usually sessile, rarely petiolate (to 0.8 mm);

blade ovate-oblong to oblong or elliptic, 30–42(–52) × 8–22 mm, base subcordate to rounded, margins plane, apex usually rounded, rarely obtuse or subretuse, midrib with 4–5 pairs of branches, tertiary veins densely reticulate toward margins, black glands intramarginal (dense) and laminar (scattered).

terminal, 1(–3)-flowered, branching from apical node pseudodichotomous, sometimes with relatively short branches from to 3 proximal nodes.

corymbiform to broadly pyramidal, (5–)13–61(–124)-flowered, subsidiary branches narrowly ascending or curved-ascending.

20–30 mm diam.;

sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate, 7–15 × 5.5–10 mm, apex subapiculate to obtuse, inner narrowly lanceolate, 7–15 × 2–3 mm, apex acute;

petals 4, bright yellow, obovate-oblong, 10–15 mm;

stamens persistent, 100;

ovary 3-merous.

15–20 mm diam.;

sepals not imbricate, erect in fruit, lanceolate to ovate-elliptic or elliptic, subequal, (3–)3.6–4.6(–5.5) × 1–2 mm, apex acute to obtuse;

petals golden yellow, narrowly obovate or oblanceolate to elliptic, 6–11 mm;

stamens (37–)42–56(–62);

anther gland black;

styles 1.5–5 mm.

broadly ellipsoid-ovoid to subglobose, 5–6 × 3.5–4 mm.

ellipsoid to subglobose, 3–7 × 3–4.5 mm, with longitudinal vittae.

not carinate, 0.7 mm;

testa shallowly scalariform.

not carinate, 0.7–0.9 mm;

testa not seen.

= 18.

= 16.