Flora of North America species comparison

internodes 6-lined at first, becoming 4-lined, then terete.

internodes 4-angled.

blades linear-subulate, 4–11 × 0.4–0.8 mm, base articulated, persistent, parallel or slightly expanded, margins revolute, apex rounded with ± prominent hydathode to long-acuminate, midrib unbranched.

spreading, sessile or subamplexicaul;

blade ovate or orbiculate to elliptic or oblanceolate (proximal) or oblong (distal), 3–13 × 1.5–8.5 mm, papery to membranous, margins plane, apex rounded, basal veins 3–5(–7), distally looped, midrib unbranched.

± narrowly cylindric, 1–7-flowered, with 1(–3)-flowered dichasia from to 4 proximal nodes, rarely with 1 pair of flowering branches;

flowers sessile or nearly so.

loosely corymbiform, 1–14-flowered, branching mostly dichasial.

10–14 mm diam.;

sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, 2–4 × 0.4–0.5 mm;

petals 5, bright yellow, oblanceolate-oblong to obovate, 5–10 mm;

stamens deciduous, 50–90;

ovary 3-merous.

3–5(–8) mm diam.;

sepals usually narrowly elliptic-oblong to oblanceolate-spatulate, rarely obovate, unequal, 2–4 × 0.9–2 mm, margins sometimes ciliate, not setulose-ciliate, apex subacute to rounded;

petals golden yellow to salmon-orange, oblanceolate, (1.7–)3.5–5 mm;

stamens (5–)12–15(–25), separate or obscurely 3-fascicled;

styles 0.5–2 mm;

stigmas scarcely capitate.

narrowly (sub-)cylindric, (4–)5.7–9.5 × 1.5–2 mm.

ellipsoid to cylindric or subglobose, 2.5–5 × 1.7–2.5 mm.

scarcely carinate, 0.5 mm;

testa coarsely reticulate.

0.5–0.6 mm;

testa linear-scalariform.

= 18.

= 16.