Flora of North America species comparison

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

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

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

blades usually oblong to lanceolate-oblong, sometimes oblanceolate, 25–65 × 8–22 mm, base articulated, broadly to narrowly cuneate, margins plane or subrecurved, apex apiculate-obtuse to rounded, midrib with 10–16 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.

1–3(–7)-flowered from apical node, sometimes with paired single flowers or triads (3-flowered cymules) or 1–3-flowered branches at proximal node.

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.

24–45 mm diam.;

sepals deciduous, not enclosing capsule, (4)5, ovate or oblong to elliptic-spatulate, unequal, 6–14(–20) × 4–10 mm;

petals (4–)5, golden yellow to orange-yellow, obovate to oblanceolate, 12–25 mm;

stamens deciduous, 250–650;

ovary 3-merous.

ovoid, 3–4 × 2–2.5 mm.

ovoid-conic to ovoid-rostrate, 12–15 × 6–8 mm.

carinate, 0.7 mm;

testa not seen.

carinate, 1.5 mm;

testa linear-reticulate.

= 18.