Flora of North America species comparison

numerous, spreading, mostly to 1 cm diam., stout.

few–numerous, spreading to descending, mostly to 0.5 cm diam., stout.

persisting through anthesis, to 4–5, basal, reduced to sheathing bracts upward on stem, spreading, linear-lanceolate, keeled, 5–25 × 1 cm.

usually persisting through anthesis, 3–5, basal, spreading, oval-oblanceolate, 2–6 × 1–2 cm.

spikes loosely to tightly spiraled, 3–7 or more flowers per cycle of spiral, sometimes nearly secund;

rachis densely pubescent, trichomes articulate, pointed, capitate glands absent.

secund to loosely spiraled, 8–10 flowers per cycle of spiral;

rachis glabrous to sparsely pubescent, trichomes commonly minute, abortive;

any glands stalked, trichomes then capitate.

nodding to somewhat ascending, white to cream, mostly gaping;

sepals distinct to base, lanceolate, 6–10 × 2–3 mm;

lateral sepals spreading;

petals oblong, 6–9 × 2 mm, apex obtuse;

lip creamy yellow centrally or some individuals with 2 brown-orange spots, ovate, 5–8 × 4 mm;

veins of lip straight, branches parallel;

basal calli conic, to 1 mm;

viscidium linear-lanceolate;

ovary mostly 8 mm.

creamy yellow to pale greenish yellow;

sepals 5 × 1 mm, distinct to base, appressed;

petals elliptic, slightly oblique, linear to lance-oblong, 5 × 1 mm, apex acute to obtuse;

lip commonly yellow centrally, ovate to oblong, 5 × 2.5 mm, apex dilated, yellow and papillate-pubescent, its margin crisped, finely lacerate;

veins several, branches very short;

basal calli long-pointed, mostly to 1 mm;

viscidium linear-lanceolate;

ovary mostly 3 mm.

monoembryonic.

monoembryonic.

= 30.