Flora of North America species comparison

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

decumbent, few-branched, (finely papillose), bearing terminal rosettes.

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

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

offsets not formed.

erect, simple, 4–20 cm, (papillose);

leaf blades obovate to obovate-spatulate or elliptic, base short-spurred;

offsets not formed.

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.

in whorls of 3, rarely 2 or 4 or decussate, spreading to ascending, shortly petiolate or sessile;

blade pale yellow-green to dark green, not glaucous, obovate to obovate-spatulate or elliptic, laminar, 10–17 × 7–11 mm, base truncately short-spurred, not scarious, apex truncate or rounded, sometimes emarginate, (surfaces finely papillose or crenulate).

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

branches not recurved, 2-forked;

bracts similar to leaves, smaller.

cymes, 5–25-flowered, 3-branched, (sometimes papillose);

branches recurved in bud, becoming ± erect at anthesis, not forked;

bracts similar to leaves.

0.6–6.3 mm.

absent or to 1 mm, (papillose, almost glandular).

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.

4(–6)-merous;

sepals spreading to erect, connate basally, pale yellow-green, lanceolate-oblong or elliptic, equal, 2.4–5 × 0.8–1.7 mm, apex obtuse, (finely papillose);

petals erect to spreading, distinct, white, elliptic-lanceolate, abaxially carinate, adaxially channeled, 5.4–8.9 mm, apex acute;

filaments white, (flattened basally);

anthers red or purple;

nectar scales yellow or pale yellow, oblong or subquadrate.

erect in fruit, distinct, brown.

widely divergent in fruit, distinct, brown.

= 32.