UW Burke Herbarium species comparison

Leaves few to several, becoming reduced to bracts towards inflorescence;

blade oblong to narrowly lanceolate, 2.7-23 cm long and 0.4-4 cm broad, somewhat folded lengthwise, base sheathing stem.

Leaves few, prostrate, ephemeral, basal;

blades sessile, lanceolate to oblanceolate, 7.5-32 cm long and 1-8.4 cm broad, barely folded along midvein;

cauline bracts linear-lanceolate.

Inflorescence a terminal spike, sparse to very dense;

flowers resupinate, light green to light yellowish green, with dull yellowish lip, or whitish green when conditions are cool;

lateral sepals spreading or bent strongly away from flower center;

petals rhombic-ovate to lance-falcate, margins entire;

labellum bent strongly downward, or extending forward, or apex adhered to apexes of dorsal sepal and petals, rhombic-lanceolate to lanceolate, not thickened basally, 2.5-6 cm long and 1-1.5 mm broad, base not rounded-dilated, margins entire;

spur thicker at apex than base or somewhat cylindric, 2-5 mm;

rostellum lobes diverging and directed downward, minute, rounded;

pollinaria 2, straight;

pollinia 2, turning forward, may be fragmenting, masses of pollen loose and free of anther sacs, trailing down onto stigma, stigma entire;

viscidia orbiculate, free;

ovary slender to stout, usually 5-13 mm.

Inflorescence a sparsely to densely flowered raceme, 6-70 cm;

rachis typically longer than peduncle;

bracts 3-23 mm;

flowers green, sometimes slightly translucent;

fragrance emits at night but lingers during day, faint, musky to honeylike;

sepals 2-6 mm long and 1-3 mm broad;

dorsal sepal ovate to oblong;

lateral sepals spreading to strongly curving outward, oblong-lanceolate to oblong;

petals erect-spreading or projecting, generally straight sided, unevenly ovate to narrowly lanceolate, 2-5.5 mm long and 0.6-2 mm broad, inner margins form a U shape;

labellum somewhat bent downward, widely ovate to narrowly elliptic, 2-5 mm long and 1-3 mm broad, apex commonly curving upward slightly;

spur horizontal to curving downward, 2-5.5 mm, approximately equal to labellum;

viscidia widely elliptic-ovate, 0.15-0.5 mm long and 0.1-0.3 mm broad;

rostellum blunt.

Capsules.

Capsules 3.5-10.5 mm;

seeds tan to cinnamon brown.