Flora of North America species comparison

internodes 4-lined.

erect to suberect, sessile;

blade linear or linear-subulate to linear-lanceolate, 5–22 × 0.5–1 mm, subcoriaceous, margins recurved to revolute, apex acute to obtuse, basal vein 1, midrib unbranched.

rounded-corymbiform, 13–60-flowered, narrowly branched, without subsidiary branches.

narrowly to broadly triangular, 1–12-flowered, branching mostly monochasial.

10–15 mm diam.;

sepals persistent, not enclosing capsule, 5, ovate-lanceolate to lanceolate, subequal, (2–)4–7 × 1–1.5 mm;

petals 5, bright yellow, obovate-oblanceolate, 6–8 mm;

stamens persistent, 60–80;

ovary 3-merous, placentation parietal.

5–8 mm diam.;

sepals narrowly oblong to linear-lanceolate, subequal, 3–7 × 0.7–1.3 mm, apex acute;

petals golden yellow to orange-yellow, oblong, 4–7 mm;

stamens 10–22, separate or obscurely 3-fascicled;

styles (0.5–)0.8–1.5 mm;

stigmas broadly capitate.

ellipsoid to ovoid-ellipsoid, 3.5–6 × 2–4 mm.

narrowly ovoid to ovoid-cylindric, 3.5–7 × 2.5–3 mm, length 1–1.2 times sepals.

slightly carinate, 0.6–0.7 mm;

testa scalariform.

0.9–1.1 mm;

testa finely scalariform.

= 18.

= 24.