Flora of North America species comparison

internodes 2–4-lined.

internodes 4-angled.

blades narrowly elliptic or narrowly oblong to linear, 30–70 × 3–15 mm, base not articulated, narrowly cuneate to linear, margins plane to revolute, apex subacute to rounded, midrib with 0–4 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.

rounded-corymbiform, 7–70-flowered, narrowly branched, sometimes with dichasia or branches from to 8 proximal nodes.

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

10–15 mm diam.;

sepals persistent, not enclosing capsule, 5, broadly ovate to oblong-elliptic, ± unequal, 2.5–5 × 1.5–3 mm;

petals 5, bright yellow, oblanceolate-elliptic to elliptic, 5–9 mm;

stamens persistent, 45–85;

ovary 3-merous, placentation parietal.

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.

broadly ovoid to depressed-globose, 4.5–8 × 4–7 mm.

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

carinate, 2–2.7 mm;

testa coarsely reticulate.

0.5–0.7 mm;

testa finely linear-scalariform.

= 16.