Flora of North America species comparison

rootstocks, decumbent and ascending, branched, (sometimes papillose), bearing terminal rosettes and above ground shoots.

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

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, 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.

(not easily detached), alternate, spreading-erect to erect or ascending, sessile;

blade dull gray-green or bluish green, green, or reddish green, often glaucous, lanceolate, elliptic-lanceolate, or elliptic-ovate, subterete, 4.2–13 × 1.5–3.5 mm, base very short-spurred, base of withered blade at times becoming scarious, apex obtuse or obtusely apiculate, (surfaces papillose).

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).

cymes, 5–25-flowered, (1–)3(–6)-branched;

branches ascending, spreading to erect, or recurved, forked;

bracts similar to leaves.

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

branches not recurved, not forked;

bracts similar to leaves, smaller.

absent or to 3 mm.

1–3.6 mm.

5-merous;

sepals erect, connate basally, pale green to yellow-green, ovate or lanceolate, equal, 2–5 × 1–2 mm, apex acute or, rarely, obtuse, (often papillose);

petals widely spreading from suberect base, distinct, canary to golden yellow, lanceolate, elliptic-lanceolate, or linear-lanceolate, canaliculate, 6–9.2 mm, apex acute to acuminate with minute mucronate appendage;

filaments yellow;

anthers yellow, sometimes suffused with red;

nectar scales deep yellow to yellow-green, obovately square.

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, basally connate, brown.

subdivergent in fruit, connate basally, brown.

= 16.

= 30.