Flora of North America species comparison

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

procumbent, rooting, simple, (basally often somewhat woody), bearing rosettes.

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-spurred;

offsets not formed.

erect or ascending, drooping when young, simple, 15–35 cm;

leaf blades linear, 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.

alternate, (imbricate), ascending, sessile;

blade green, sometimes glaucous, linear to oblong, terete, 10–15 × 1–3 mm, base with truncate spur, not scarious, apex mucronate.

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

branches not recurved, rarely forked;

bracts similar to leaves, smaller.

terminal corymbiform cymes, 15–25+-flowered, monochasially 3–7-branched, (sparsely glandular-hairy);

branches recurved, not forked;

bracts similar to leaves.

absent or to 1 mm.

absent or to 1 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–)7(–9)-merous;

sepals erect, connate basally, yellowish green, ovate, equal, 2–3(–3.3) × 1.5–2 mm, apex acute-acuminate, (glabrous or sparsely glandular-pubescent);

petals spreading, distinct, yellow, oblong, slightly carinate, 6–7 mm, apex acute;

filaments yellow;

anthers yellow;

nectar scales yellow, transversely oblong.

stellately patent in fruit, distinct, yellowish.

erect in fruit, distinct, brown.

= 40, 60, 80, 100, 120.

= 56, 88, 112, 120.