Flora of North America species comparison

internodes 4-angled.

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

spreading, sessile or amplexicaul;

blade usually ovate-triangular to broadly ovate, rarely oblong (mid and distal blades lanceolate-deltate), 5–25 × 3–12 mm, papery to membranous, margins plane, apex usually subacute, basal veins (3–)5, midrib usually with 1–2 pairs of branches.

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

laxly corymbiform to cylindric, (1–)5–65-flowered, branching mostly dichasial.

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.

4.5–7 mm diam.;

sepals lanceolate to narrowly ovate, equal, 3–5 × 0.8–1.2 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to acuminate;

petals bright yellow, oblanceolate, 2–4 mm;

stamens 10–14, scarcely grouped;

styles 0.5–0.7 mm;

stigmas broadly capitate.

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.

narrowly conic-ellipsoid, 3–5 × 1.5–2 mm, usually broadest at or near middle.

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

0.5–0.6 mm;

testa finely linear-scalariform.

not carinate, 0.4 mm;

testa finely foveolate-reticulate.

= 16.

= 18.