Flora of North America species comparison

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

creeping, much-branched, forming terminal rosettes on branches (primary rosettes usually 1–2.7 cm diam.).

erect, simple, 3–14 cm;

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

offsets not formed.

erect, simple, 3.5–17.5 cm;

leaf blades narrowly oblong to linear, 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).

alternate, spreading to ascending, petiolate;

blade pale green or blue-green, usually glaucous, oblanceolate to spatulate, laminar, (6–)10–18 × 1–4.5 mm, base petiolelike, with simple, short spur, not scarious, apex obtuse, (surfaces papillose).

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

branches not recurved, forked;

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

cymes, 5–30-flowered, 3-branched;

branches erect or only slightly recurved, sometimes forked;

bracts similar to leaves, smaller.

2–8 mm.

absent.

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.

4-merous;

sepals divergent, distinct, green, linear-lanceolate, unequal, 3.6–6.3 × 0.9–1.6 mm, apex obtuse, (papillose);

petals spreading, distinct, white, lanceolate, minutely hooded, 4–9 mm, apex acuminate;

filaments white;

anthers dark red to almost purple;

nectar scales white, subquadrate.

divergent in fruit, connate basally, brown.

widely divergent in fruit, slightly connate basally, brown.

= 30.

= 28, 44, 45–49.