Flora of North America species comparison

many-branched, forming tufts, with fibrous remains of old leaves at nodes, slender, 0.6–0.8 cm diam.;

roots few, fibrous.

many-branched, not creeping, forming dense clumps, slender, 0.3–0.8 cm diam.;

roots fibrous.

simple, solid, almost absent or to 2.5 dm.

simple, somewhat angular, solid, 1.5–2.7 dm.

basal longer than stem, blade light green, finely veined, narrowly linear, 3–4 dm × 0.4–0.6 cm, glaucous, margins not thickened, apex acute;

cauline 1–2, spreading, sheathing for about 1/2 length, foliaceous, blade not inflated, 0.7–1 dm.

basal somewhat lax, overtopping stem, blade light green, paling to pink or straw color basally, finely ribbed, linear-acute to linear, ensiform, 4.5 dm × 0.5 cm, margins not thickened;

cauline 1–3, sheathing for 1/2 length then spreading, foliaceous, blade linear-lanceolate, not inflated, narrow, reduced, to 15 cm.

(1–)2-flowered;

spathes nearly opposite, connivent, linear-lanceolate, 4–9.5 cm × 4–6 mm, subequal or outer longer.

1–2-flowered;

spathes distant basally by 3 cm in some cases, keeled, linear-lanceolate to lanceolate-acuminate, 5–7 cm × 2–4 mm, unequal, outer longer than inner, herbaceous, margins scarious.

perianth indigo, purple, lavender, white, cream, or yellow;

floral tube linear, gradually dilating apically, 6 cm;

sepals usually with fine, dark veins basally, becoming coarser on claw, oblanceolate or obovate, 3.9–7 × 2 cm, base abruptly attenuate into claw;

petals oblanceolate, 3.5–6 × 0.5–1.6 cm, base gradually attenuate;

ovary ovoid, ca. 1 cm;

style 2–3.5 cm, crests overlapping, reflexed, semiovate, 0.8–1.8 cm, margins denticulate;

stigmas triangular, margins entire;

pedicel 1.5–2 cm.

perianth color variable, purple, pink, lavender, cream, yellow, or rarely white;

floral tube funnelform, 0.6–2 cm;

sepals veined with color of limb, obovate, 5.8–6 × 1.6–2 cm, base gradually attenuate into white claw with slight yellow ridge, apex emarginate to bluntly rounded;

petals same color as sepals, not prominently veined, lanceolate to oblanceolate, 5 × 1 cm;

ovary 1–2 cm, slightly wider distally, base very gradually attenuate;

style 2.2–3.2 cm, crests subquadrate, 8–12 mm, margins crenate or incised;

stigmas triangular, margins entire;

pedicel 1–5 cm, longer in second flower (when present) than in first.

oblong to ovoid, somewhat 3-angled in cross section, 2.5–3 cm.

oblong, triangular in cross section, prominently ribbed, beaked, 3–5 cm.

dark brown, angular, finely wrinkled.

brown, D-shaped to irregular, wrinkled.

= 40.