Flora of North America species comparison

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

internodes 4-lined at first, soon 4-angled, then terete, not glaucous.

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.

blades linear-subulate, 8–25 × 0.5–0.7 mm, not glaucous, base articulated, parallel or slightly expanded, margins revolute, apex acute, midrib unbranched.

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

shortly cylindric, 1–3-flowered, often with single flowers or triads from 1–2 proximal nodes.

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.

12–15 mm diam.;

sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, 5–7 × 0.5 mm, not glaucous;

petals 5, bright yellow, oblong-spatulate, 7–9 mm;

stamens deciduous, 75;

ovary 3-merous;

styles 2.5–4 mm.

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

narrowly pyramidal-ovoid, 6 × 2.4 mm.

narrowly carinate, 0.7–0.8 mm;

testa finely reticulate.

not carinate, 0.6–0.8 mm;

testa finely foveolate-reticulate.

= 18.