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).

erect, pendulous, or prostrate, much-branched, not bearing basal rosettes.

erect, simple, (5–)11(–18) cm;

leaf blades ovate or elliptic, base not spurred;

offsets not formed.

(axillary), ascending, usually simple, sometimes branched, 10–50 cm;

leaf blades elliptic-oblanceolate, base not 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).

alternate, spreading, sessile;

blade green tinged with red, not glaucous, elliptic-oblanceolate, laminar, 40–80 × 13–25 mm, base not spurred, not scarious, apex rounded.

cymes, 5–60-flowered, 3–6-branched;

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

bracts similar to leaves, smaller.

elongated paniculate cymes, 50–300+-flowered, 3–25-branched;

branches not recurved, forked;

bracts similar to leaves, smaller.

to 0.3 mm.

absent or to 1 mm.

(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.

(4–)5(–6)-merous;

sepals erect, usually distinct, green, ovate, lanceolate, or elliptic-oblong, unequal, 1.5–9.6 × 1–3.2 mm, apex obtuse;

petals widely spreading, distinct or slightly connate basally, yellow, lanceolate, carinate, ca. 7.5 mm, apex acute or obtuse, mucronate;

filaments yellow;

anthers yellow;

nectar scales yellowish or translucent, subquadrate or reniform.

stellately spreading in fruit, connate basally, brown.

widely divergent in fruit, distinct, brown.

= 16.

= 68.