Flora of North America species comparison

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

root-stocks and erect shoots, branched proximally, sometimes bearing rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect or ascending, simple or branched, 1–4(–9) cm, (with small glistening patches);

leaf blades linear-oblanceolate, base truncate or 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, sessile;

blade blue-green, not glaucous, linear-oblanceolate, terete to subterete, 4–9(–15) × 1–2 mm, base broadly spurred, not scarious, apex obtuse.

cymes, 5–25-flowered, (1–)3(–6)-branched;

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

bracts similar to leaves.

compact, 3-parted cymes, (5–)10–25-flowered, monochasially branched;

branches erect to spreading or recurved, rarely forked;

bracts suboblong, base truncate or spurred.

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.

5–6-merous;

sepals erect to spreading, distinct, blue-green, linear to narrowly oblong, unequal, ca. 2–4(–6) × 0.7–1.5 mm, apex obtuse;

petals spreading, distinct, white tinged with purple, oblong, somewhat carinate, 4–7 mm, apex acute or broadly mucronate;

filaments white;

anthers purplish;

nectar scales dark pink, spatulate.

erect in fruit, basally connate, brown.

stellately spreading in fruit, distinct, stramineous.

= 16.

= 19, 22, 24, 44, 52.