Flora of North America species comparison

internodes 4-lined.

internodes (2–)4-lined at first, then 2-lined to terete.

blades oblong-ovate to triangular-lanceolate, 8–40 × (5–)7–20 mm, base articulated, subcordate-amplexicaul, margins recurved, apex rounded, midrib with 3 or 4 pairs of branches.

blades oblong-ovate to ovate or triangular-ovate, 5–35 × 4–15 mm, base articulated, cordate-amplexicaul, margins subrecurved, apex apiculate or obtuse to rounded, midrib with 1 pair of branches.

hemispheric to ± flat-topped, 7–30-flowered, widely branched, with flowers or flowering branches from to 3 proximal nodes.

terminal, 1(–3)-flowered, branching from apical node pseudodichotomous, sometimes with relatively short branches from to 3 proximal nodes.

15–25 mm diam.;

sepals persistent, not enclosing capsule, 5, ovate to lanceolate, unequal to subequal, 5–8 × 2–4.5 mm;

petals 5, bright yellow, obovate to oblong-lanceolate, 8–15 mm;

stamens deciduous, 200;

ovary 3(–4)-merous.

20–30 mm diam.;

sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate, 7–15 × 5.5–10 mm, apex subapiculate to obtuse, inner narrowly lanceolate, 7–15 × 2–3 mm, apex acute;

petals 4, bright yellow, obovate-oblong, 10–15 mm;

stamens persistent, 100;

ovary 3-merous.

pyramidal-ovoid, 5–6 × 3–4 mm.

broadly ellipsoid-ovoid to subglobose, 5–6 × 3.5–4 mm.

narrowly carinate, 1 mm;

testa shallowly linear-reticulate.

not carinate, 0.7 mm;

testa shallowly scalariform.

= 18.

= 18.