Flora of North America species comparison

internodes 2–4-lined.

internodes usually weakly 2-lined, sometimes not lined, without black glands, rarely with reddish glands.

blades narrowly elliptic or narrowly oblong to linear, 30–70 × 3–15 mm, base not articulated, narrowly cuneate to linear, margins plane to revolute, apex subacute to rounded, midrib with 0–4 pairs of branches.

usually spreading, rarely erect, sessile or (proximal) subpetiolate;

blade oblong-elliptic or elliptic to triangular-ovate or (proximal) obovate, 12–28(–32) × 6–15(–18) mm, base subcordate to rounded or (proximal) cuneate, margins plane, apex obtuse to rounded, midrib with 4–5 pairs of branches, tertiary veins not densely reticulate, black glands intramarginal (± dense) and, rarely, (1–2) laminar (distal).

rounded-corymbiform, 7–70-flowered, narrowly branched, sometimes with dichasia or branches from to 8 proximal nodes.

cylindric to narrowly pyramidal, (1–)8–20-flowered.

10–15 mm diam.;

sepals persistent, not enclosing capsule, 5, broadly ovate to oblong-elliptic, ± unequal, 2.5–5 × 1.5–3 mm;

petals 5, bright yellow, oblanceolate-elliptic to elliptic, 5–9 mm;

stamens persistent, 45–85;

ovary 3-merous, placentation parietal.

6–15(–25) mm diam.;

sepals not or scarcely imbricate, erect in fruit, ovate to lanceolate or narrowly oblong, unequal to subequal, 2.5–5.5 × 1–2 mm, apex acute to rounded;

petals golden yellow, sometimes red-tinged, oblanceolate, 7–12 mm;

stamens 50–90(–109);

anther gland black;

styles 2–8 mm.

broadly ovoid to depressed-globose, 4.5–8 × 4–7 mm.

oblanceoloid, 6–10 × 3.5–6 mm, with longitudinal vittae.

carinate, 2–2.7 mm;

testa coarsely reticulate.

not carinate, (0.5–)0.7–0.8 mm;

testa linear-reticulate.

= 16.