Flora of North America species comparison

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

decumbent, branched, not bearing rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, branched, 8.5–20 cm;

leaf blades linear-elliptic or linear-lanceolate, 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).

in whorls of 4(–5), spreading, sessile;

blade bright green, not glaucous, linear-elliptic or linear-lanceolate, subterete, 8–20 × 1.9–3 mm, base spurred, not scarious, apex blunt.

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

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

bracts similar to leaves.

cymes, 20–50+-flowered, 3-branched;

branches scorpioid, 2-forked;

bracts similar to leaves, smaller.

absent or to 3 mm.

absent.

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 spreading, distinct basally, green, lanceolate, unequal, 3.3–4.7 × 0.9–1.6 mm, apex acute;

petals widely spreading, distinct, golden yellow, elliptic, not carinate, 3.3–4.8 mm, apex acute;

filaments yellowish;

anthers yellow;

nectar scales pale yellow, obovate- to spatulate-subquadrate.

erect in fruit, basally connate, brown.

erect, distinct, yellowish green.

= 16.

= 36.