Flora of North America species comparison

creeping and ascending, branched, not bearing rosettes.

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

creeping or ascending, simple, 10–25 cm;

leaf blades narrowly oblanceolate-elliptic, base short-spurred;

offsets not formed.

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

leaf blades oblong-oblanceolate, base not spurred;

offsets not formed.

in whorls of 3, spreading, sessile;

blade pale yellowish green, not glaucous, narrowly rhombic-elliptic to widely lanceolate, subterete, 10–25 × 4–6 mm, base spurred, not scarious, apex subacute.

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).

dense cymes or corymbs, 8–40-flowered, (1–)2–4-branched;

branches spreading to widely ascending, sometimes 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.

absent or to 0.5 mm.

1–3.6 mm.

5-merous;

sepals spreading, distinct basally, green, widely lanceolate to oblong, often unequal, 3.5–5 × 0.8–1.5 mm, apex acute or obtuse;

petals spreading, slightly connate, yellowish, lanceolate to oblong, not carinate, 5–8 mm, apex long-mucronate;

filaments yellow;

anthers reddish;

nectar scales orange, rectangular-spatulate.

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.

stellately patent in fruit, distinct, yellow-green.

subdivergent in fruit, connate basally, brown.

= ca. 72.

= 30.