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.

compact, dark brown, slender, 0.5–0.6 cm diam., covered with old leaf bases;

roots few, fibrous.

simple, solid, almost absent or to 2.5 dm.

simple, solid, slender, 0.25–2 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 with blade light green, pink or red-tinged basally, finely ribbed, linear-acute, 2.5–5 dm × 0.3–0.5 cm, somewhat glaucous, margins not thickened;

cauline 1–3, imbricated, blade bractlike, inflated.

(1–)2-flowered;

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

usually 2–flowered;

spathes sometimes flushed pink or purple apically, lanceolate to linear-lanceolate, 5–10 cm × 3–7 mm, unequal, outer much shorter and narrower than inner, herbaceous, margins often scarious, apex acute.

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 cream or very pale yellow, with deeper yellow or lavender veins;

floral tube linear, slender, 4.5–12 cm;

sepals with bluish tinge and veins, oblanceolate, 4.6–7 × 1–2 cm, base gradually attenuate;

petals lanceolate, 3–5.5 × 0.6–1.2 cm, base gradually attenuate, apex emarginate;

ovary 1–1.8 cm, base abruptly attenuate into pedicel (when present), apex gradually acuminate into floral tube;

style 2–3 cm, crests 1.5–2 cm, sometimes exceeding arms, apex narrowly pointed;

stigmas tongue-shaped, margins entire;

pedicel absent or 0.5–1 cm at anthesis.

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

sometimes on elongated pedicel, oblong, round in cross section, sharply beaked, 2–3 cm.

dark brown, angular, finely wrinkled.

buff, slightly compressed.

= 40.

= 40.