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.

with short, creeping branches, stout, 2–2.5 cm diam., covered with bases of old leaves;

roots numerous, fleshy.

simple, solid, almost absent or to 2.5 dm.

simple or 1–2-branched, solid, 3–6 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 persistent, blade dark green, turning gray or yellow-brown when drying, veins not prominent, linear, 4–7 dm × 0.6–1 cm, usually longer than stem, glaucous or subglaucous, apex acute;

cauline 2–3, reduced.

(1–)2-flowered;

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

3–6-flowered;

spathes distant, inner sometimes 10 cm distal to outer, green, narrowly linear-lanceolate, 8–15 cm × 20–40 mm, herbaceous, margins and apex 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 pale blue-violet or nearly white, with lilac-purple veins;

floral tube funnelform, 0.5–1.3 cm;

sepals spreading, then drooping at apex, white, flecked and veined with violet, obovate, 8–10 × 3–5 cm, base attenuate into narrow claw with prominent yellow ridge, signal a yellowish basal patch;

petals semierect, oblong, 8–9 × 1.5–2 cm, base gradually attenuate, apex emarginate, bluntly rounded;

ovary trigonal with central ridge in each face, 2–5 cm;

style narrow basally, widening distally, 3.5–4 × 0.6–1 cm, crests overlapping basally, subquadrate, 1–1.5 cm, margins incised;

stigmas obscurely to prominently 2-lobed, margins crenate;

pedicels stout, 3–9 cm, unequal at anthesis, becoming ± equal at maturity.

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

6-ribbed, oblong-ovoid, tapering to either end, almost round in cross section, 8–9 cm.

dark brown, angular, finely wrinkled.

dark brown, globular, wrinkled.

= 40.

= 86, 88.