Flora of North America species comparison

internodes 2–4-lined.

internodes 6-lined at first, soon 4-lined, then terete.

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.

blades narrowly oblong-elliptic or oblanceolate to linear, 15–32(–37) × 1–7 mm, base articulated, attenuate, margins recurved to revolute, apex rounded to acute, midrib obscurely branched.

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

narrowly cylindric, 3–15-flowered from apical node, with (1–)3–5-flowered dichasia from 3–4 proximal nodes, sometimes with additional flowering branches.

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.

9–14 mm diam.;

sepals deciduous, not enclosing capsule, 5, oblanceolate-spatulate to linear, subequal or equal, 3.5–6.5 × 0.5–1.5 mm;

petals 5, bright yellow, obovate-oblanceolate, 5–9 mm;

stamens deciduous, 60–120;

ovary 3-merous, placentation parietal.

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

narrowly ovoid-conic, 4.5–6 × 2.5–3.5 mm.

carinate, 2–2.7 mm;

testa coarsely reticulate.

narrowly carinate, 0.7–0.8 mm;

testa finely reticulate.

= 18.