Flora of North America species comparison

rhizomes, horizontal, much-branched, bearing rosettes.

rootstocks, vertical, branched, (glandular), bearing terminal rosettes.

erect, simple, (6–)10–28 cm;

leaf blades suborbiculate or obovate, base not spurred;

offsets not formed.

recurved when young, simple, 13–30 cm, (glandular-pubescent);

leaf blades oblong-oblanceolate, base not 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, ascending, sessile;

blade green, glaucous when young, oblong-spatulate, laminar, 14–32 × 9–14 mm, base not spurred, not scarious, apex widely rounded to obtuse or emarginate, with papillose-crenulate appendage, (surfaces of proximal leaves glabrous, of distal leaves glandular-hairy).

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

branches not recurved, dichotomously forked;

bracts similar to leaves, smaller.

cymes (sometimes appearing paniculate), 20–30-flowered, (2–)3-branched;

branches not recurved, not forked;

bracts similar to leaves, smaller.

2–5 mm.

1–3.6 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, ovate or lanceolate, equal, 6.5–8.5 × 3–4.5 mm, apex obtuse or acute, (glandular-pubescent);

petals erect, (convolute), connate basally, sulphur yellow, oblong-lanceolate, not carinate, 12.5–16 mm, apex aristate, (glandular-pubescent);

filaments greenish yellow;

anthers yellow;

nectar scales white or translucent, narrowly reniform.

erect in fruit, distinct, brown, (strongly 5-veined).

subdivergent in fruit, connate basally, brown.

= 90.

= 30.