Flora of North America species comparison

internodes 4-lined.

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

appressed, sessile;

blade narrowly triangular-subulate to linear-subulate, scalelike, 1–4 × 0.4–0.6 mm, subcoriaceous to chartaceous, margins incurved, apex obtuse to rounded, basal vein 1, midrib unbranched.

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.

usually pyramidal, 1–24-flowered, branching mostly monochasial.

subcapitate to cylindric, 1–7-flowered.

3–5 mm diam.;

sepals lanceolate to narrowly oblong or linear-lanceolate, unequal, 1.5–2.5 × 0.4–0.8 mm, apex acute;

petals orange-yellow to golden yellow, oblong, 2–4 mm;

stamens 5–11, 5 separate or obscurely 5-grouped;

styles 0.8–1.2 mm;

stigmas broadly capitate.

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.

narrowly cylindric-conic, 4–5 × 1–1.2 mm, length 2–2.7 times sepals.

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

0.4–0.8 mm;

testa markedly ribbed-scalariform.

not carinate, 1 mm;

testa minutely and shallowly pitted.

= 24.

= 16.