Flora of North America species comparison

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

decumbent, lateral branches from proximal axils, rosettes formed in proximal axils (giving rise to flowering shoots).

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-spurred;

offsets not formed.

ascending, appearing angled when dry, simple or branched, 4.7–6 cm;

leaf blades elliptic-oblong or oblanceolate, base not spurred;

offsets axillary rosettes only basally.

(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, (loosely imbricate), divergent, sessile;

blade green, not glaucous, obovate or elliptic, rarely lanceolate, subterete, 4.7–7.5 × 2.5–3.4 mm, base not spurred, not scarious, apex obtuse, (surfaces finely papillose marginally).

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

branches not recurved, rarely forked;

bracts similar to leaves, smaller.

cymes, 3–15-flowered, 2–3-branched;

branches not or only slightly recurved, not forked;

bracts (2–3), similar to leaves, smaller.

absent or to 1 mm.

absent or to 0.1 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-merous;

sepals erect, basally connate, yellow-green, ovate, equal, ca. 2 × 15 mm, apex acute or obtuse;

petals widely spreading, distinct, yellowish green, lanceolate-elliptic, not carinate, 5–6.5 mm, apex acute with minute mucronate appendage;

filaments yellow;

anthers yellow;

nectar scales yellow to orange, rarely pale yellow to greenish white, square or ± square.

stellately patent in fruit, distinct, yellowish.

widely divergent in fruit, connate basally, brown.

= 40, 60, 80, 100, 120.

= 32, 43–51, 45–54, 50.