Flora of North America species comparison

rhizomes, horizontal, much-branched, bearing rosettes.

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

erect, simple, (6–)10–28 cm;

leaf blades suborbiculate or obovate, 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, ascending to spreading, sessile to subsessile;

blade green, glaucous, not strongly pruinose, obovate or oblanceolate, subterete, 10–36 × 5–16 mm, base not spurred, not scarious, apex emarginate to retuse.

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).

panicles, 10–120-flowered, 3–20-branched;

branches not recurved, dichotomously 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.

2–5 mm.

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

5-merous;

sepals (persistent, closely appressed to corolla tube), erect, connate basally, greenish, ovate, equal, 3.2–3.5 × 1–3 mm, apex subacute;

petals (persistent until fruiting), erect basally, divergent apically, connate basally, creamy white, yellowish white, or pale yellow, elliptic-oblong or oblanceolate-oblong, cucullate, 5–9(–11.5) mm, apex abruptly pointed;

filaments pale yellow;

anthers yellow;

nectar scales white or yellow, subreniform.

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, (strongly 5-veined).

widely divergent in fruit, distinct, brown.

= 90.

= 32.