Flora of North America species comparison

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

decumbent, branched, not bearing rosettes.

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-spurred;

offsets not formed.

erect, branched, 8.5–20 cm;

leaf blades linear-elliptic or linear-lanceolate, base 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.

in whorls of 4(–5), spreading, sessile;

blade bright green, not glaucous, linear-elliptic or linear-lanceolate, subterete, 8–20 × 1.9–3 mm, base spurred, not scarious, apex blunt.

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

branches not recurved, rarely forked;

bracts similar to leaves, smaller.

cymes, 20–50+-flowered, 3-branched;

branches scorpioid, 2-forked;

bracts similar to leaves, smaller.

absent or to 1 mm.

absent.

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 spreading, distinct basally, green, lanceolate, unequal, 3.3–4.7 × 0.9–1.6 mm, apex acute;

petals widely spreading, distinct, golden yellow, elliptic, not carinate, 3.3–4.8 mm, apex acute;

filaments yellowish;

anthers yellow;

nectar scales pale yellow, obovate- to spatulate-subquadrate.

stellately patent in fruit, distinct, yellowish.

erect, distinct, yellowish green.

= 40, 60, 80, 100, 120.

= 36.