Flora of North America species comparison

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

procumbent, rooting, simple, (basally often somewhat woody), bearing rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect or ascending, drooping when young, simple, 15–35 cm;

leaf blades linear, base 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, (imbricate), ascending, sessile;

blade green, sometimes glaucous, linear to oblong, terete, 10–15 × 1–3 mm, base with truncate spur, not scarious, apex mucronate.

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

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

bracts similar to leaves.

terminal corymbiform cymes, 15–25+-flowered, monochasially 3–7-branched, (sparsely glandular-hairy);

branches recurved, not forked;

bracts similar to leaves.

absent or to 3 mm.

absent or to 1 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–)7(–9)-merous;

sepals erect, connate basally, yellowish green, ovate, equal, 2–3(–3.3) × 1.5–2 mm, apex acute-acuminate, (glabrous or sparsely glandular-pubescent);

petals spreading, distinct, yellow, oblong, slightly carinate, 6–7 mm, apex acute;

filaments yellow;

anthers yellow;

nectar scales yellow, transversely oblong.

erect in fruit, basally connate, brown.

erect in fruit, distinct, brown.

= 16.

= 56, 88, 112, 120.