Flora of North America species comparison

internodes 4-lined at first, soon 2-lined to terete.

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

blades narrowly oblong to oblanceolate or linear, 35–50 × 3–11 mm, base articulated, narrowly cuneate to attenuate, margins recurved to revolute, apex apiculate-rounded to subacute, midrib with 12–14 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.

globose-cylindric to shortly and broadly pyramidal, 5–25-flowered from apical node, with 3–15-flowered dichasia from 1–3 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 deciduous, not enclosing capsule, 5, narrowly elliptic to narrowly oblong or oblanceolate-spatulate, subequal to equal, (3.5–)4–4.5 × 0.8–1.5(–2) mm, basal veins 3–7;

petals 5, golden yellow, obovate-oblanceolate, 6–7(–8) mm;

stamens deciduous, 100–150;

ovary (3–)4–5-merous.

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.

narrowly ovoid-conic to ovoid, 5.5–7 × 2.5–3.5 mm, notably lobed.

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

not carinate, 1.2–1.5 mm;

testa linear-reticulate.

narrowly carinate, 0.7–0.8 mm;

testa finely reticulate.

= 18.

= 18.