Flora of North America species comparison

rhizomes, horizontal, much-branched, bearing rosettes.

ascending, branched, (stoloniferous), not bearing rosettes.

erect, simple, (6–)10–28 cm;

leaf blades suborbiculate or obovate, base not spurred;

offsets not formed.

erect, simple or branched, 6–15 cm;

leaf blades linear, base spurred;

offsets not formed.

alternate, ascending to spreading, sessile to subsessile;

blade green, glaucous, not strongly pruinose, obovate or oblanceolate, subterete, 10–36 × 5–16 mm, base not spurred, not scarious, apex emarginate to retuse.

alternate, (densely imbricate on nonflowering shoots), usually in 6 rows (fewer on flowering shoots), ascending, sessile;

blade bright green, not glaucous, linear, subterete to terete, 3–6 × 0.8–2 mm, base spurred, not scarious, apex obtuse.

panicles, 10–120-flowered, 3–20-branched;

branches not recurved, dichotomously forked;

bracts similar to leaves, smaller.

moderately lax cymes, 5–25-flowered, (1–)2–3(–4)-branched;

branches spreading, sometimes forked;

bracts similar to leaves, smaller.

2–5 mm.

to 0.5 mm.

5-merous;

sepals (persistent, closely appressed to corolla tube), erect, connate basally, greenish, ovate, equal, 3.2–3.5 × 1–3 mm, apex subacute;

petals (persistent until fruiting), erect basally, divergent apically, connate basally, creamy white, yellowish white, or pale yellow, elliptic-oblong or oblanceolate-oblong, cucullate, 5–9(–11.5) mm, apex abruptly pointed;

filaments pale yellow;

anthers yellow;

nectar scales white or yellow, subreniform.

5(–6)-merous;

sepals erect, distinct, yellowish green, linear-elliptic, unequal, 0.8–1 × 0.4–0.5 mm, apex obtuse;

petals spreading, distinct, bright yellow, lanceolate, not carinate, 3–4 mm, apex acute or acuminate;

filaments yellow;

anthers yellow;

nectar scales yellow, square.

erect in fruit, distinct, brown, (strongly 5-veined).

divergent in fruit, distinct, dark brown.

= 90.

= 74, 111, 148, 185.