Flora of North America species comparison

rhizomatous, procumbent or creeping, much-branched, bearing terminal rosettes.

decumbent, branched, not bearing rosettes.

erect, simple, 3–14 cm;

leaf blades spatulate-oblong or elliptic-oblong, base not spurred;

offsets not formed.

erect, branched, 8.5–20 cm;

leaf blades linear-elliptic or linear-lanceolate, base spurred;

offsets not formed.

alternate, spreading, petiolate;

blade green, often glaucous or pruinose, spatulate, terete to laminar, 7–19 × 4.5–10 mm, base not spurred, not scarious, apex rounded or truncate, submucronate, (surfaces papillose marginally).

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, ca. 30-flowered, ca. 3-branched;

branches not recurved, forked;

bracts oblong-spatulate or linear, ca. 3 cm, base not spurred.

cymes, 20–50+-flowered, 3-branched;

branches scorpioid, 2-forked;

bracts similar to leaves, smaller.

2–8 mm.

absent.

5-merous;

sepals spreading to erect, connate basally, green or yellow-green, glaucous or pruinose, lanceolate, linear-lanceolate, oblong-ovate, or obovate, equal, ca. 2.5 × 1.5 mm, apex acute or obtuse;

petals widely spreading from short, erect base, distinct or slightly connate basally, yellow, linear to oblanceolate, not carinate, 4.5–9 mm, apex acute;

filaments yellow;

anthers yellow;

nectar scales yellow, reniform or nearly 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.

divergent in fruit, connate basally, brown.

erect, distinct, yellowish green.

= 30.

= 36.