Flora of North America species comparison

rhizomes, horizontal, much-branched, bearing rosettes.

rootstocks, erect, branched from base, bearing rosettes.

erect, simple, (6–)10–28 cm;

leaf blades suborbiculate or obovate, base not spurred;

offsets not formed.

erect, simple, 6–15 cm;

leaf blades oblanceolate-oblong, base short-spurred;

offsets not formed.

alternate, ascending to spreading, sessile to subsessile;

blade green, glaucous, not strongly pruinose, obovate or oblanceolate, subterete, 10–36 × 5–16 mm, base not spurred, not scarious, apex emarginate to retuse.

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.

panicles, 10–120-flowered, 3–20-branched;

branches not recurved, dichotomously 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.

2–5 mm.

3–5 mm.

5-merous;

sepals (persistent, closely appressed to corolla tube), erect, connate basally, greenish, ovate, equal, 3.2–3.5 × 1–3 mm, apex subacute;

petals (persistent until fruiting), erect basally, divergent apically, connate basally, creamy white, yellowish white, or pale yellow, elliptic-oblong or oblanceolate-oblong, cucullate, 5–9(–11.5) mm, apex abruptly pointed;

filaments pale yellow;

anthers yellow;

nectar scales white or yellow, subreniform.

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, (strongly 5-veined).

erect in fruit, connate basally, brown.

= 90.

= 30.