Flora of North America species comparison

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

internodes 4-lined.

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.

ascending to appressed, sessile;

blade usually lanceolate, rarely elliptic to ovate, 5–20(–24) × 5–15 mm, shorter than internodes, smaller distally, leathery, margins plane, apex acute, gland-dotted, less conspicuously adaxially, basal veins 1–5, midrib with 2–3 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 30-flowered, 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.

5–13 mm diam.;

sepals lanceolate, unequal, 3.5–4.2(–4.8) mm, margins sometimes ciliate, not setulose-ciliate, apex acute to subacuminate;

petals orange-yellow, ± obovate, 5–10 mm;

stamens 50–80, filaments basally connate;

styles 2–4 mm;

stigmas clavate.

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

ovoid, 3–4.5 mm.

carinate, 1.5 mm;

testa linear-reticulate.

0.4–0.7 mm;

testa reticulate.

= 18.