Flora of North America species comparison

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

erect, simple or branched, not forming rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, simple, 3–15 cm;

leaf blades linear-oblong or obovate-elliptic, 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, spreading-erect, sessile;

blade pea green, not glaucous, linear-oblong or oblong-elliptic, terete or subterete, ca. 6 × 2 mm, base not spurred, not scarious, apex obtuse, (surfaces papillose).

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

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

bracts similar to leaves.

corymbiform cymes, 3–15-flowered, 2–3-branched;

branches not recurved, not forked;

bracts similar to leaves, smaller.

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-merous;

sepals spreading, distinct, green, lanceolate, unequal, 1.5–2.5 × 0.5–1 mm, apex acute;

petals divergent in distal 1/2 from erect base, distinct, yellow, narrowly lanceolate, slightly carinate, 3–5 mm, apex acute;

filaments yellowish or greenish;

anthers yellow;

nectar scales yellow, oblong.

erect in fruit, basally connate, brown.

stellately spreading in fruit, distinct, light brown or yellow.

= 16.

= 22.