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, becoming erect or ascending, branched, not bearing true rosettes.

erect, simple, (5–)11(–18) cm;

leaf blades ovate or elliptic, base not spurred;

offsets not formed.

erect, usually simple, rarely branched, 6–10 cm;

leaf blades suborbiculate to spatulate-obovate or oblong, 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).

opposite and decussate (rarely alternate), spreading, sessile;

blade green or reddish green, not glaucous, suborbiculate to spatulate-obovate or oblong, subterete, ± globular, 4–9 × 4–6 mm, base slightly subcordate, (clasping), 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.

terminal cymes, 5–25-flowered, 2–3-branched;

branches recurved to erect, forked or not;

bracts similar to leaves or elliptic to broadly lanceolate, 2–5 mm, base clasping, apex obtuse to acute.

to 0.3 mm.

0.5–4 mm (sometimes enlarged apically).

(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(–7)-merous;

sepals erect, connate basally, green, ovate, equal, 2–3 × 1.5–2 mm, apex obtuse;

petals erect basally, spreading distally, usually distinct, sometimes slightly connate basally, yellow, elliptic-lanceolate, not or only slightly carinate, ca. 6 mm, apex acute or obtuse with mucronate appendage;

filaments yellow;

anthers yellow;

nectar scales yellow, subquadrate.

stellately spreading in fruit, connate basally, brown.

widely spreading in fruit, firmly connate basally, red to light reddish brown or straw colored.

= 16.

= 16.