Flora of North America species comparison

internodes 4-lined.

deciduous (base articulated) or persistent (base not articulated).

(main stem) spreading to appressed, sessile;

blade usually broadly to narrowly ovate, rarely elliptic or lanceolate, 4–20 × 5–15(–18) mm, mostly shorter than internodes, leathery, margins plane, apex acute to subrounded, densely gland-dotted, basal veins 1–5, if 1, midrib with 2–3 pairs of branches.

broadly pyramidal to corymbiform, to 25-flowered, branching mostly dichasial.

3–15 mm diam.;

sepals persistent, (4–)5;

petals persistent, (4–)5;

stamens persistent, (5–)10–80, usually in continuous or interrupted ring, sometimes in 5 barely discernable fascicles, each of 1–2 stamens;

ovary (2–)3(–4)-merous;

placentation parietal;

styles ± spreading, bases distinct;

stigmas capitate or clavate.

5–13 mm diam.;

sepals ovate or lanceolate to elliptic or obovate, subequal, 3–8 × 1.5–4 mm, margins sometimes ciliate, not setulose-ciliate, apex acute;

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

stamens 50–80, irregularly grouped;

styles 2–4 mm;

stigmas clavate.

ovoid to rostrate-subglobose, 3–5 × 2–3 mm.

not carinate.

0.4–0.7 mm;

testa obscurely linear-reticulate to finely ribbed-scalariform.