Flora of North America species comparison

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

creeping and ascending, branched, not bearing rosettes.

erect, simple, 3–14 cm;

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

offsets not formed.

creeping or ascending, simple, 10–25 cm;

leaf blades narrowly oblanceolate-elliptic, base short-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 3, spreading, sessile;

blade pale yellowish green, not glaucous, narrowly rhombic-elliptic to widely lanceolate, subterete, 10–25 × 4–6 mm, base spurred, not scarious, apex subacute.

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

branches not recurved, forked;

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

dense cymes or corymbs, 8–40-flowered, (1–)2–4-branched;

branches spreading to widely ascending, sometimes forked;

bracts similar to leaves, smaller.

2–8 mm.

absent or to 0.5 mm.

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, widely lanceolate to oblong, often unequal, 3.5–5 × 0.8–1.5 mm, apex acute or obtuse;

petals spreading, slightly connate, yellowish, lanceolate to oblong, not carinate, 5–8 mm, apex long-mucronate;

filaments yellow;

anthers reddish;

nectar scales orange, rectangular-spatulate.

divergent in fruit, connate basally, brown.

stellately patent in fruit, distinct, yellow-green.

= 30.

= ca. 72.