Flora of North America species comparison

rootstocks, horizontal, simple, bearing basal rosettes (axillary shoots with subterranean, white stems that detach easily and bear terminal rosettes of colorless leaves).

decumbent, branched, not bearing rosettes.

erect, simple, (5–)11(–18) cm;

leaf blades ovate or elliptic, 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, outermost ones petiolate (petiole 4–5 mm);

blade green or greenish white, not glaucous, oblanceolate, obovate, or narrowly spatulate, laminar, 2–16 × 1.4–3.2 mm, base not spurred, not scarious, apex blunt, (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, 5–60-flowered, 3–6-branched;

branches often strongly recurved, each 1 or 2 times dichotomously forked;

bracts similar to leaves, smaller.

cymes, 20–50+-flowered, 3-branched;

branches scorpioid, 2-forked;

bracts similar to leaves, smaller.

to 0.3 mm.

absent.

(5–)6(–7)-merous;

sepals erect, slightly connate basally, green, ovate, equal, 1.5–2 × 0.7–1.1 mm, apex acute;

petals spreading, distinct nearly to base, canary yellow, keel green or dark red, lanceolate to oblong, carinate, 4–6 mm, apex subobtuse to acute;

filaments yellow;

anthers yellow;

nectar scales deep yellow, subquadrate.

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.

stellately spreading in fruit, connate basally, brown.

erect, distinct, yellowish green.

= 16.

= 36.