Flora of North America species comparison

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

ascending, branched, (stoloniferous), not bearing rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, simple or branched, 6–15 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, (densely imbricate on nonflowering shoots), usually in 6 rows (fewer on flowering shoots), ascending, sessile;

blade bright green, not glaucous, linear, subterete to terete, 3–6 × 0.8–2 mm, base spurred, not scarious, apex obtuse.

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

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

bracts similar to leaves.

moderately lax cymes, 5–25-flowered, (1–)2–3(–4)-branched;

branches spreading, sometimes forked;

bracts similar to leaves, smaller.

absent or to 3 mm.

to 0.5 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(–6)-merous;

sepals erect, distinct, yellowish green, linear-elliptic, unequal, 0.8–1 × 0.4–0.5 mm, apex obtuse;

petals spreading, distinct, bright yellow, lanceolate, not carinate, 3–4 mm, apex acute or acuminate;

filaments yellow;

anthers yellow;

nectar scales yellow, square.

erect in fruit, basally connate, brown.

divergent in fruit, distinct, dark brown.

= 16.

= 74, 111, 148, 185.