Flora of North America species comparison

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

decumbent, branched, bearing terminal rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, branched, 10–43 cm;

leaf blades linear, base with scarious spurs;

offsets rosettes, produced from axils of leaves and bracts.

(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 erect, sessile;

blade green, not glaucous, linear to elliptic-oblong (subulate when dry), subterete, 4.3–13.8 × 1.4–2.7 mm, base (persistent), spurred (spur simple, small), scarious, apex acute, (surfaces sometimes papillose marginally).

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

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

bracts similar to leaves.

solitary flowers or cymes, 9–15(–25)-flowered, mostly 3-branched;

branches slightly recurved, not forked;

bracts linear-lanceolate, smaller than leaves, base spurred.

absent or to 3 mm.

absent or to 0.5 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.

5-merous;

sepals erect, distinct, pale green or yellow-green, lanceolate or ovate, equal, 2–3.7 × 0.9–1.7 mm, apex acute or long-acuminate;

petals stellately spreading, distinct, deep yellow with green to brown dorsal keel to almost white, lanceolate or elliptic, slightly carinate, 5.4–8 mm, apex obtuse, acute, or long-acuminate, sometimes with aristate appendage;

filaments yellow;

anthers yellow;

nectar scales greenish yellow or yellowish white, reniform-subquadrate or square.

erect in fruit, basally connate, brown.

divergent in fruit, shortly connate, pale green, yellow-green, or brown.

= 16.

= 50–54, 58, 62–70, 63–64.