Flora of North America species comparison

sheathed with old leaf bases, slender, 0.6–0.9 cm diam.;

roots few, fibrous.

superficial or very shallow, cordlike portion 1–2 dm × 2 mm, expanding to 10–15 mm diam., nodes with brown, scalelike leaves and few to no roots.

simple, solid, 1.5–3 dm.

1–2-branched, 3–3.2 dm.

basal with abaxial surface of blades deep glossy green on one side of fan, light yellow-green on other side, pink or red-tinged basally, strongly ribbed, 4–6 dm × 0.8–1 cm, rigid, margins not thickened;

cauline 3–6, imbricated, closely sheathing stem ca. 2/3 length, spreading distally, bractlike, blade inflated, often shorter than basal leaves.

basal with blade pale green, 3.2 dm × 1.5 cm, margins scarious basally, apex acute, proximal 2 semi- sheathing, blade 5 cm, scarious;

cauline 1–2, sheathing branch and stem for ca. 1/2 their length, blade ca. 5 cm, semimembranous.

simple, units 1–2-flowered;

spathes closed tightly around pedicel and ovary, lanceolate, 5.2–9 cm × 6–8 mm, subequal, herbaceous, margins scarious, apex acuminate.

2–3-branched, each unit with single flower, all borne at approximately the same level;

spathes 2–3 cm × 5 mm, subequal, scarious except basally and along midrib.

perianth cream to buff-yellow;

floral tube 0.8–0.9 cm;

sepals with deeper yellow signal, veined with purple or brown, obovate-lanceolate, 6.5 × 2.5 cm, base gradually attenuate into wide claw;

petals narrowly oblanceolate, 7–9 × 0.8–2 cm, base gradually attenuate;

ovary nearly circular in cross section, 1.5–2.5 cm, base gradually attenuate into pedicel, apex abruptly acuminate into floral tube;

style 2.2–3 cm, crests spreading, yellow, not veined, 1.2 × 0.9–1.7 cm, margins toothed;

stigmas triangular or tongue-shaped, margins entire;

pedicel 3–6.2 cm.

perianth white or blue tinged with deep violet lines;

floral tube funnelform, 0.3 cm;

sepals oblong-spatulate, 2.8 × 1 cm, apex deeply emarginate, signal an inconspicuous crest with low, yellow, undissected ridge;

petals bluish white, oblanceolate-spatulate, base gradually attenuate into claw;

ovary elliptical, 0.4–0.7 cm;

style 1.8 cm, crests broadly obovate, 0.7 cm, margins erose;

stigmas triangular-acuminate, margins entire;

pedicel 0.4–1 cm, not lifting flower clear of spathes.

nearly circular in cross section, tapering abruptly at each end, 2–2.5 × 1–1.5 cm.

depressed-globose, roundly triangular, 0.9–1.5 × 1.2 cm.

dark brown, irregular in shape, wrinkled.

pale brown, with whitish raphe, D-shaped, pitted.

= 40.

= 28.