Flora of North America species comparison

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

roots fleshy.

sparingly short-branched, forming dense clumps, 1–1.5 cm diam., hard, with old leaf bases at nodes;

roots fleshy.

usually 1-branched, solid, 7–15 dm.

slightly flattened, with 1–2 short branches, solid, 4–12 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 erect, blade with slight spiral twist and central ridge, 3.5–8 dm × 1–2 cm, stiff, harsh, fibrous, glaucous;

cauline 2–3, 1–2 subtending floral clusters, blade reduced.

4–12-flowered;

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

clustered, 2–4-flowered;

spathes white, 3–5 cm, subequal, papery.

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 white;

floral tube funnelform, 1–2.5 cm;

sepals spreading and arching downward, with large yellow basal area, broadly orbicular, 8–10 × 3–6 cm, apex rounded, deeply emarginate;

petals white, spatulate, 4–6 × 1–1.5 cm, base gradually attenuate, apex emarginate;

ovary triangular in cross section with 2 ribs at each angle, 2–2.5 cm;

style white, with parallel sides, 4–5 cm, crests erect, triangular, 1–2 cm;

stigmas 2-lobed;

pedicel 2.5–7.5 cm.

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

ovoid to oblong-elliptic, triangular in cross section, each angle 2-ribbed, 4–5 × 2–2.5 cm.

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

in 2 rows per locule, white, flattened or wedge-shaped, 4–5 mm, papery, wrinkled.

= 34.

= 40.