Flora of North America species comparison

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

rootstocks, erect, branched from base, bearing rosettes.

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-spurred;

offsets not formed.

erect, simple, 6–15 cm;

leaf blades oblanceolate-oblong, base short-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, erect, sessile;

blade green, appearing whitish because of pruinose covering, margins green, not white, strongly pruinose, not glaucous, narrowly obovate, laminar, 7–38 × 5–9 mm, base spurred, not scarious, apex usually obtuse to truncate, sometimes emarginate.

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

branches not recurved, rarely forked;

bracts similar to leaves, smaller.

dense, paniculate cymes, 30–60-flowered, 7–9-branched;

branches not recurved, somewhat 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, appearing blue-green, glaucous, lanceolate-oblong, equal, 4–7 × 1.5–3.2 mm, apex acute, (papillose);

petals erect, connate basally, creamy white, oblong, not carinate, 8.5–11.5 mm, apex acute, mucronate;

filaments white, becoming reddish;

anthers yellow;

nectar scales yellow, transversely oblong.

stellately patent in fruit, distinct, yellowish.

erect in fruit, connate basally, brown.

= 40, 60, 80, 100, 120.

= 30.