Flora of North America species comparison

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

internodes 4-angled.

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.

spreading, sessile or distal subamplexicaul;

blade lanceolate to narrowly oblong-elliptic or (proximal) oblanceolate, 10–45 × (2–)6–12 mm, papery to membranous, margins plane, apex acute to rounded, basal or near-basal veins (3–)5–7, midrib with to 4 pairs of branches.

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.

corymbiform to cylindric, 3–30-flowered, usually compact, branching mostly dichasial.

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.

6–7 mm diam.;

sepals lanceolate to narrowly elliptic, equal, 3.5–6.5 × 0.8–1.5 mm, margins sometimes ciliate, not setulose-ciliate, apex acute;

petals golden yellow, sometimes red-veined, oblanceolate, 3.5–6 mm;

stamens 12–21, obscurely 5-fascicled;

styles 0.6–1 mm;

stigmas broadly capitate.

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

narrowly conic-ellipsoid, 4–8 × 2.5–3.5 mm, broadest proximal to middle.

carinate, 1.5 mm;

testa linear-reticulate.

0.5–0.7 mm;

testa finely linear-scalariform.

= 18.

= 16.