Flora of North America species comparison

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

roots fleshy.

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

roots few, fibrous.

usually 1-branched, solid, 7–15 dm.

simple, solid, slender, 0.25–2 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 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.

4–12-flowered;

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

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 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 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.

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

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

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

buff, slightly compressed.

= 34.

= 40.