Flora of North America species comparison

root-stocks, ascending, much-branched, bearing rosettes.

rootstocks, erect, branched from base, bearing rosettes.

erect or decumbent, simple or branched, 4–30(–40) cm;

leaf blades oblanceolate, spatulate, obovate, or suborbiculate, base not spurred;

offsets not formed.

erect, simple, 6–15 cm;

leaf blades oblanceolate-oblong, base short-spurred;

offsets not formed.

alternate, erect to spreading, sessile;

blade green, glaucous or not, not pruinose, oblanceolate, spatulate, or obovate, subterete or somewhat flattened, 10–50 × (4.5–)6–33 mm, base not spurred, not scarious, apex truncate to rounded or obtuse, emarginate or barely notched.

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.

elongate, paniculate cymes, 12–80-flowered, monochasially 3+-branched;

branches not recurved, 2-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.

0.6–6.3 mm.

3–5 mm.

5-merous;

sepals erect, (closely appressed to corolla tube), slightly connate basally, pale green, ovate or lanceolate, equal, (2–)2.6–5.1 × 2 mm, apex acute or subacute, (rarely obtuse in var. flavidum);

petals basally erect, divergent in distal 1/2, connate basally, pink, pinkish white, or white to yellowish white, lanceolate-oblong, oblanceolate-oblong, or elliptic-oblong, not carinate, 4–11 mm, apex obtuse, shortly mucronate or aristate;

filaments white, greenish white, or pink;

anthers red, reddish purple, red-brown, or yellow;

nectar scales white, yellow, or pink, reniform or transversely oblong.

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.

erect in fruit, distinct, brown.

erect in fruit, connate basally, brown.

= 30.