Flora of North America species comparison

rootstocks and decumbent branches, (stout), bearing terminal rosettes.

root-stocks, ascending, much-branched, bearing rosettes.

erect, simple or branched, 8–13 cm;

leaf blades spatulate or cuneate, base short-spurred;

offsets not formed.

erect or decumbent, simple or branched, 4–30(–40) cm;

leaf blades oblanceolate, spatulate, obovate, or suborbiculate, base not spurred;

offsets not formed.

alternate, spreading, sessile;

blade lustrous light green, not glaucous, spatulate or cuneate, laminar (thickest near apex), 7–12 × 4.4–9 mm, base short-spurred, not scarious, apex broadly rounded or truncate.

alternate, erect to spreading, sessile;

blade green, glaucous or not, not pruinose, oblanceolate, spatulate, or obovate, subterete or somewhat flattened, 10–50 × (4.5–)6–33 mm, base not spurred, not scarious, apex truncate to rounded or obtuse, emarginate or barely notched.

dense corymbs, 5–10-flowered, 3-branched;

branches spreading to erect, primary branch dichotomously forked;

bracts spatulate or oblanceolate, 5–8 mm, base spurred.

elongate, paniculate cymes, 12–80-flowered, monochasially 3+-branched;

branches not recurved, 2-forked;

bracts similar to leaves, smaller.

absent or 0.4–3+ mm.

0.6–6.3 mm.

5-merous;

sepals erect, connate basally, green, ovate-lanceolate, equal, ca. 3.5 × 2 mm, apex acuminate or acute;

petals erect or erect basally and divergent distally, connate basally, yellow, narrowly lanceolate, carinate, ca. 10.5 mm, apex aristate;

filaments yellowish or greenish;

anthers yellow;

nectar scales yellow, subquadrate to spatulate or oblong.

5-merous;

sepals erect, (closely appressed to corolla tube), slightly connate basally, pale green, ovate or lanceolate, equal, (2–)2.6–5.1 × 2 mm, apex acute or subacute, (rarely obtuse in var. flavidum);

petals basally erect, divergent in distal 1/2, connate basally, pink, pinkish white, or white to yellowish white, lanceolate-oblong, oblanceolate-oblong, or elliptic-oblong, not carinate, 4–11 mm, apex obtuse, shortly mucronate or aristate;

filaments white, greenish white, or pink;

anthers red, reddish purple, red-brown, or yellow;

nectar scales white, yellow, or pink, reniform or transversely oblong.

erect in fruit, connate basally, light brown or yellow.

erect in fruit, distinct, brown.

= 24.