Flora of North America species comparison

trailing (nonflowering shoots ascending at tip), laxly branched, not bearing rosettes.

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

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-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.

(usually deciduous, if persistent, then blade white, soft, papery), alternate, (densely imbricate), spreading, sessile;

blade yellow-green, not glaucous, triangular-ovate, terete to semiterete (elliptic in cross section), (2–)5(–8) × 1–4 mm, base obtusely short-spurred, not scarious, apex obtuse.

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).

cymes, 2–12-flowered or flowers solitary, monochasially (1–)2(–3)-branched;

branches not recurved, rarely forked;

bracts similar to leaves, smaller.

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

branches reflexed, forked;

bracts similar to leaves, smaller.

absent or to 1 mm.

3–5 mm.

5-merous;

sepals erect to spreading, distinct basally, green, oblong-ovate, unequal, 2–3 × 1.3–2.3, mm, apex obtuse;

petals spreading, distinct, bright yellow, oblong-ovate to lanceolate, not carinate, 5–9 mm, apex acute to acuminate;

filaments yellow;

anthers yellow, (oblong);

nectar scales yellowish green, square.

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.

stellately patent in fruit, distinct, yellowish.

erect in fruit, distinct, whitish.

= 40, 60, 80, 100, 120.

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