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 or decumbent, simple or branched, not bearing rosettes.

erect, simple, (5–)11(–18) cm;

leaf blades ovate or elliptic, base not spurred;

offsets not formed.

erect, simple or branched, 2.5–11 cm;

leaf blades lanceolate-elliptic or oblong, base short-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, widely divergent, sessile;

blade pale or bluish green, not glaucous, narrowly lanceolate-elliptic or oblong, subterete to, rarely, globular, 3–6 × 1.5–2 mm, base short-spurred, not scarious, apex obtuse.

cymes, 5–60-flowered, 3–6-branched;

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

bracts similar to leaves, smaller.

cymes, 20–60(–100)-flowered, 1–3-branched;

branches ± erect to spreading, sometimes slightly recurved, usually not forked, sometimes 1–2-forked;

bracts similar to leaves.

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.

5-merous;

sepals erect, distinct, yellow-green, lanceolate or lanceolate-oblong, unequal, 0.6–3 × 0.4–1.5 mm, (base short-spurred), apex acute;

petals spreading, distinct, yellow, elliptic-oblong, slightly cucullate, 2–4 mm, apex mucronate;

filaments yellow;

anthers yellow;

nectar scales yellow or translucent, stipitate-reniform, subquadrate, or obovate.

stellately spreading in fruit, connate basally, brown.

widely spreading in fruit, connate basally, straw-yellow.

= 16.

= 20.