Flora of North America species comparison

internodes (4-) or 6-lined at first, then terete.

internodes 4–6-lined at first, soon 2-lined.

blades linear-subulate, 13–25 × 0.5–0.8 mm, base articulated, parallel, margins revolute, apex rounded to retuse, midrib unbranched.

blades elliptic, 15–26 × 5–8(–11) mm, base not articulated, cuneate to subrounded, with glandlike auricles, margins subrecurved to subincrassate, apex obtuse to acute, midrib with to 4 pairs of branches.

narrowly pyramidal, 1–3-flowered, with 1–3(–5)-flowered dichasia from to 5 proximal nodes, without additional flowering branches;

pedicels 0.5 mm.

1-flowered, branching from apical node repeatedly pseudodichotomous, without branches from proximal nodes.

12–14 mm diam.;

sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, (3–)4.5–7 × 0.5–0.8 mm;

petals 5, golden yellow, oblanceolate-oblong, 5–7.5 mm;

stamens deciduous, 100;

ovary 3-merous.

15–20 mm diam.;

sepals persistent, enclosing capsule, 4, unequal, outer broadly ovate, 8–17 × 5–9 mm, apex acute to subacuminate, inner linear-lanceolate, 5–6 × 0.6–1.2 mm, apex acuminate;

petals 4, bright yellow, obovate, 10–18 mm;

stamens persistent, 70–80;

ovary 3–4-merous.

ovoid, 3–4 × 2–2.5 mm.

narrowly pyramidal-ovoid, 5–8 × 3–4 mm.

carinate, 0.7 mm;

testa not seen.

not carinate, 0.8 mm;

testa reticulate.