Flora of North America species comparison

internodes 4-lined at first, then terete.

internodes 4-lined at first, soon 2-lined, with black glands on or near lines.

blades narrowly oblong or narrowly elliptic-oblong to triangular-lanceolate, 15–40 × 2–10 mm, base not articulated, cuneate to subcordate, margins recurved, apex subacute to rounded, midrib with 1 pair of branches.

spreading, sessile;

blade ovate to oblong or lanceolate, 33–65 × 15–27 mm, base cordate to truncate or broadly cuneate, margins plane, apex obtuse to rounded, midrib with 4–5 pairs of branches, tertiary veins densely reticulate toward margins, black glands intramarginal (dense) and, sometimes, laminar (scattered).

corymbiform to cylindric, (7–)15–65-flowered, narrowly branched, sometimes with 3–65-flowered dichasia from 1–2 proximal nodes and relatively short, flowering branches from further 1–4 nodes.

subcorymbiform, (2–)5–14(–22)-flowered, subsidiary branches sometimes narrowly ascending or curved-ascending.

7–12 mm diam.;

sepals persistent, not enclosing capsule, 5, obovate or broadly elliptic to oblong, unequal, 2–4 × 1–1.7 mm;

petals 5, bright yellow, oblanceolate, 5–8 mm;

stamens (some or all) persistent, 30–50;

ovary 3-merous, placentation parietal.

20–25(–30) mm diam.;

sepals not imbricate, erect in fruit, lanceolate, subequal, 5–7.5(–11) × 1–3 mm, apex acute;

petals golden yellow, narrowly obovate, 11–18 mm;

stamens 50–90(–103);

anther gland black;

styles 5.6–12 mm.

ovoid-cylindric to broadly ovoid, 4–6 × 3–4 mm.

broadly ovoid, 5–8 × 3.5–5 mm, with longitudinal vittae.

not carinate, 0.6 mm;

testa reticulate to linear-foveolate.

not carinate, 0.8–1.1 mm;

testa linear-reticulate.

= 18.

= 16.