Flora of North America species comparison

clustered, internodes not lined, with black glands scattered all over.

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

spreading or ascending, usually sessile, rarely petiolate (to 1 mm);

blade elliptic or oblong to lanceolate or triangular-lanceolate, or oblanceolate, 14–40(–58) × 3–17(–22.5) mm, base cordate to narrowly cuneate, margins plane, apex usually rounded to retuse, rarely acute to obtuse, midrib with 3–5 pairs of branches, tertiary veins densely reticulate toward margins, black glands intramarginal (dense) and laminar (scattered).

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.

subcorymbiform to cylindric, 10–206(–600)-flowered, subsidiary branches narrowly ascending to curved-ascending.

subcapitate to cylindric, 1–7-flowered.

8–15 mm diam.;

sepals not imbricate, erect in fruit, lanceolate or oblong-lanceolate to elliptic or ovate-elliptic, subequal, (1.5–)2–4 × 0.8–1.6 mm, apex acute to rounded;

petals pale yellow, oblanceolate to elliptic, 3–6(–9) mm;

stamens (20–)30–60;

anther gland black;

styles 1–4 mm.

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.

ovoid to subglobose, 2.5–6 × 2–3.5(–4) mm, with longitudinal vittae or elongate to ovoid vesicles.

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

not carinate, 0.5–0.7 mm;

testa linear-reticulate.

not carinate, 1 mm;

testa minutely and shallowly pitted.

= 14, 16.

= 16.