Flora of North America species comparison

few–several, spreading to descending, tuberous, mostly to 1 cm diam.

few–several, spreading to descending, tuberous, mostly to 1 cm diam.

persisting through anthesis or fugaceous, basal, often on proximal portion of stem, ascending, linear to linear-lanceolate, linear-oblanceolate, oblanceolate or elliptic, to 34 × 3.5 cm.

persisting through anthesis or fugaceous, basal, often on proximal portion of stem, ascending to spreading, linear to linear-lanceolate, elliptic, or oblanceolate, to 26 × 3 cm.

usually very tightly spiraled, rarely loosely spiraled, usually 3 flowers per cycle of spiral;

rachis glabrous to sparsely pubescent, trichomes less (usually much less) than 0.18 mm, capitate glands often sessile.

usually very tightly spiraled, 3 flowers per cycle of spiral, rarely loosely spiraled or with more than 5 flowers per cycle;

rachis glabrous to very sparsely pubescent, capitate glands short-stalked or often sessile (longest trichomes 0.03–0.18 mm).

ascending, creamy to markedly yellowish, slenderly tubular;

sepals connate at base, 4.6–11 mm, apex reflexed-spreading;

petals linear-lanceolate to linear-oblanceolate, apex reflexed-spreading, obtuse to subacute or subemarginate;

lip lance-ovate to lanceolate, 4–9.5 × 1.9–4.3 mm, apex recurved less than to scarcely more than apices of sepals and petals, only slightly or not at all dilated, with subapical dense cushion of peg-shaped trichomes on adaxial surface;

veins few to several, branches wide-spreading or often parallel;

viscidia linear to linear-elliptic;

ovary mostly 2–7.5 mm.

ascending, white to ivory, rarely yellowish white, tubular;

sepals and petals connivent, forming hood above abruptly reflexed lip;

sepals connate at base, 5.3–12.5 mm;

petals linear to ovate, apex obtuse to subacute;

lip pandurate, 4.8–10.2 × 1.6–6.8 mm, base broadly expanded, apex broadly dilated, separated by narrow isthmus, apical dilation variable, rarely lip nearly ovate, glabrous or with a few scattered trichomes on adaxial surface;

veins typically 3, branches wide-spreading;

viscidia linear-lanceolate;

ovary 2–7 mm.

monoembryonic.

monoembryonic.

= 44 [66].

= 44, 66, 88.