Flora of North America species comparison

decumbent, branched, bearing terminal rosettes.

erect, diffusely branching from base (hypocotyl extremely long), not bearing rosettes.

erect, branched, 10–43 cm;

leaf blades linear, base with scarious spurs;

offsets rosettes, produced from axils of leaves and bracts.

erect, simple or branched, 2.5–6 cm;

leaf blades oblong-elliptic or ovate to lanceolate, base short-spurred;

offsets not formed.

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).

(proximal leaves soon falling), alternate, ascending to nearly erect, petiolate (petiole 0.5–1.5 mm);

blade light green, often reddish tinged, not glaucous, oblong-elliptic or ovate to lanceolate, terete, 1.6–4.3(–12) × 1.1–1.8 mm, base short-spurred, not scarious, apex rounded with minutely papillose tip, (surfaces minutely papillose).

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

branches slightly recurved, not forked;

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

terminal cymes, (2–)3–6-flowered, sometimes flowers solitary, simple or 1-branched;

branches recurved in bud, becoming erect in flower, forked;

bracts similar to leaves.

absent or to 0.5 mm.

0.6–3.1 mm, (continuous with calyx tube).

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.

(3–)4(–7)-merous;

sepals erect, connate basally, green, broadly ovate to reniform, equal, ca. 0.5 × 1 mm, apex rounded;

petals divergent, distinct, white, ovate-elliptic, slightly channeled, 1.4–4.2 mm, apex obtuse;

filaments white to pale reddish;

anthers dark red;

nectar scales white or pale yellow, subquadrate.

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

widely divergent in fruit, distinct, pale brown.

= 50–54, 58, 62–70, 63–64.

= 8.