Flora of North America species comparison

rhizomes, horizontal, much-branched, bearing rosettes.

creeping and short-ascending, much-branched, (densely glandular-pubescent basally), not bearing rosettes.

erect, simple, (6–)10–28 cm;

leaf blades suborbiculate or obovate, base not spurred;

offsets not formed.

erect, simple or branched, 5–18(–30) cm, (glabrous or sparsely hairy);

leaf blades linear to ovate, base scarcely 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, patent or appressed, sessile;

blade green, often reddish, not glaucous, linear to ovate, subterete but adaxial surface somewhat flattened, 4–20(–25) × 1–20 mm, base scarcely spurred, not scarious, apex obtuse or rounded, (surfaces glabrous or sparsely hairy).

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

branches not recurved, dichotomously forked;

bracts similar to leaves, smaller.

paniculate cymes, 15–50+-flowered, 3–5-branched;

branches reflexed, forked;

bracts similar to leaves, smaller.

2–5 mm.

3–5 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-merous;

sepals erect, connate basally, green, ovate to triangular, equal, 0.5–1.5 × 0.2–0.5 mm, apex acute, (glabrous or sparsely and minutely puberulent);

petals spreading, distinct, white or rarely pink, lanceolate, not carinate, 2–4.5 mm, apex subacute;

filaments white;

anthers red;

nectar scales white or yellow, spatulate.

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

erect in fruit, distinct, whitish.

= 90.

= 34, 51, 68, 85, 102, 136.