Flora of North America species comparison

pink, freely branching, producing extensive clumps, 2–3 cm diam., with fibrous remains of old leaves;

roots fleshy.

pale pinkish white, freely branching, forming large clumps, 1–2.5 cm diam., clothed with remnants of old leaves;

roots fleshy.

usually 1-branched, solid, 7–15 dm.

1–2-branched, solid, 2–6 dm.

basal deciduous, at first erect, then recurved, blade dark green, with prominent median thickening, 4–10 dm × 2–3 cm, slightly glaucous basally;

cauline equaling inflorescence unit.

basal with blade green to grayish green, often purplish basally, centrally thickened in mature leaves, prominently veined, narrowly ensiform, 1–8 dm × 1–3 cm;

cauline 1–2, blade linear-lanceolate, seldom equaling stem.

4–12-flowered;

spathes green with brown margins, outer spathe strongly keeled, inner without keel, 6–9 cm, subequal, margins not scarious.

compact, units 2–4-flowered;

spathes never foliaceous, 3–6 cm, unequal, outer shorter than inner, thickly chartaceous to scarious, margins shiny, darker in color.

perianth bright yellow;

floral tube 0.6–0.8 cm, with no constriction into ovary;

sepals bright yellow or cream colored, lanceolate to ovate or suborbiculate, 5–7.5 × 3–4 cm, base abruptly attenuate, claw ca. 1/2 length of limb, signal a darker yellow basal patch limited by short, brown lines;

petals without veining, lanceolate to spatulate, 2–3 cm;

ovary triangular in cross section with concave sides and narrow groove at each angle, 1.5 cm;

style keeled, 3–4 cm, crests spreading, 1–1.2 cm, laciniate at apex;

stigmas rounded with prominent tongue;

pedicel 2.5–7 cm.

perianth violet-blue to rarely white;

floral tube funnelform, constricted above ovary, 1–1.2 cm;

sepals ovate to reniform, 4–7.2 × 1.8–4 cm, base abruptly attenuate, signal a pubescent, greenish or greenish yellow patch surrounded by heavily veined purple on white at base of blade;

petals lanceolate to oblong-lanceolate, 2–5 × 0.5–2 cm, much shorter than sepals, firm, apex rarely emarginate;

ovary rounded-triangular in cross section, somewhat inflated, 0.8–2 cm;

style 3–3.5 cm, base not auriculate, margins entire or toothed, crests reflexed, 0.7–1.5 cm;

stigmas unlobed, triangular or rounded-triangular, margins entire;

pedicel 2–8 cm, frequently exceeding spathe.

prismatic to oblong-ovoid, obscurely 3-angled with obvious groove at each angle, 3.5–6 cm, beak 5 mm.

often persistent over winter, ovoid to oblong-ellipsoid, conspicuously beaked, obtusely triangular in cross section, 1.5–6 cm, tardily dehiscent.

D-shaped, flattened, 6–7 mm, corky, lustrous.

dark brown, D-shaped, 5–8 mm, shiny, thin, hard, regularly pebbled, not corky.

= 34.

= 108.