Flora of North America species comparison

rootstocks, decumbent and ascending, branched, (sometimes papillose), bearing terminal rosettes and above ground shoots.

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

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, simple, 3.5–17.5 cm;

leaf blades narrowly oblong to linear, base short-spurred;

offsets not formed.

(not easily detached), alternate, spreading-erect to erect or ascending, sessile;

blade dull gray-green or bluish green, green, or reddish green, often glaucous, lanceolate, elliptic-lanceolate, or elliptic-ovate, subterete, 4.2–13 × 1.5–3.5 mm, base very short-spurred, base of withered blade at times becoming scarious, apex obtuse or obtusely apiculate, (surfaces papillose).

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, 5–25-flowered, (1–)3(–6)-branched;

branches ascending, spreading to erect, or recurved, forked;

bracts similar to leaves.

cymes, 5–30-flowered, 3-branched;

branches erect or only slightly recurved, sometimes forked;

bracts similar to leaves, smaller.

absent or to 3 mm.

absent.

5-merous;

sepals erect, connate basally, pale green to yellow-green, ovate or lanceolate, equal, 2–5 × 1–2 mm, apex acute or, rarely, obtuse, (often papillose);

petals widely spreading from suberect base, distinct, canary to golden yellow, lanceolate, elliptic-lanceolate, or linear-lanceolate, canaliculate, 6–9.2 mm, apex acute to acuminate with minute mucronate appendage;

filaments yellow;

anthers yellow, sometimes suffused with red;

nectar scales deep yellow to yellow-green, obovately 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.

erect in fruit, basally connate, brown.

widely divergent in fruit, slightly connate basally, brown.

= 16.

= 28, 44, 45–49.