Flora of North America species comparison

internodes 2–4-lined.

internodes (at least some) 4-lined, without black glands.

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 petiolate (to 0.5 mm);

blade narrowly elliptic or narrowly oblong to linear, usually conduplicate, sometimes falcate, 13–22 × 1.5–8 mm, base cuneate, margins plane, apex acute to subacute, midrib with 2–4 pairs of branches, black glands marginal.

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

subcapitate to cylindric, 1–7-flowered.

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.

20–35 mm diam.;

sepals markedly imbricate, spreading in fruit, broadly to narrowly ovate, unequal, 6–9 × 2–3 mm, apex acute to acuminate;

petals yellow, obovate or oblong-obovate, (10–)12–15 mm;

stamens 40–80(–100);

anther gland amber;

styles 6–9 mm.

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

ovoid, 6–9 × 4–4.5 mm, with longitudinal vittae.

carinate, 2–2.7 mm;

testa coarsely reticulate.

not carinate, 1 mm;

testa minutely and shallowly pitted.

= 16.