Flora of North America species comparison

internodes 6-lined at first, soon 2-winged, then terete, not glaucous.

internodes 2–4-lined at first, then 2-winged.

blades linear-subulate, 8–20 × 0.7–1 mm, not glaucous, base articulated, parallel, margins revolute, apex sometimes slightly broadened, midrib unbranched.

blades usually oblong to elliptic, rarely obovate to oblanceolate or triangular-ovate, 12–36 × 6–16 mm, base articulated, rounded to slightly cordate-amplexicaul, without glandlike auricles, margins plane to subrecurved, apex rounded to obtuse, midrib with to 3 pairs of branches.

rounded-pyramidal to corymbiform, sometimes intercalary as result of resumed vegetative growth, (3–)7–32-flowered, sometimes with single flowers or 3–5-flowered dichasia from to 3 proximal nodes.

± narrowly cylindric to narrowly pyramidal, 1–3(–7)-flowered, branching dichasial, from to 4 proximal nodes.

13–16 mm diam.;

sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, (3–)4.5–8(–10) × 0.5 mm, not glaucous;

petals 5, bright yellow, obovate-spatulate, 6–9 mm;

stamens deciduous, 70–100;

ovary 3-merous;

styles 2.5–4 mm.

20–30 mm diam.;

sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate to circular, 9–20 × 9–18 mm, apex apiculate or obtuse to rounded, inner narrowly elliptic to lanceolate, 7–14 × 2–4 mm, apex acute to subacute;

petals 4, bright yellow, obovate, 11–18 mm;

stamens persistent, 80–100;

ovary 3(–4)-merous.

± narrowly ovoid-conic to ovoid-ellipsoid, 5.5 × 2.5–3 mm.

narrowly ellipsoid-ovoid, 7–10 × 5–6.5 mm.

not carinate, 0.4 mm;

testa finely foveolate-reticulate.

not carinate, 0.8 mm;

testa shallowly scalariform.

= 18.

= 18.