Flora of North America species comparison

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

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).

persistent or tardily deciduous, (base not articulated).

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

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.

6–35 mm diam.;

sepals persistent, 5;

petals persistent, 5;

stamens persistent, 20–109, in 5 fascicles, fascicles connate as 2 + 2 + 1;

ovary 3(–4)-merous;

placentation axile;

styles spreading, bases distinct;

stigmas relatively small.

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

not carinate, 0.5–0.7 mm;

testa linear-reticulate.

not or slightly carinate.

22 (8, including 1 hybrid, in the flora): North America, Mexico, West Indies, Central America, South America.

= 14, 16.