Flora of North America species comparison

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

ascending, simple or branched, sometimes bearing rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, simple, 6–23 cm;

leaf blades linear, base with 2 sagittate spurs (unique in this species);

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, sessile;

blade pale yellow-green, not glaucous, linear to oblanceolate or spatulate, subterete, 5–32 × 1.5–5 mm, base sagittately short-spurred, not scarious, apex obtuse to rounded, (surfaces papillose in rosette).

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

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

bracts similar to leaves.

cymes, 10–40-flowered, 3-branched;

branches secund or recurved, not forked;

bracts absent or similar to leaves, smaller.

absent or to 3 mm.

to 1 mm.

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(–7)-merous;

sepals erect, distinct, light green, linear-lanceolate, unequal, 1.3–5.8 × 0.5–1.5 mm, apex acute or obtuse;

petals erect or subdivergent, distinct, white to purple, narrowly linear-lanceolate or elliptic-lanceolate, carinate and slightly channeled basally, 4–10 mm, apex acute or obtuse;

filaments white or pinkish;

anthers red or purple;

nectar scales white, pinkish white, or yellow, square.

erect in fruit, basally connate, brown.

spreading in fruit, distinct, light brown.

= 16.

= 22, ca. 42.