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.

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.

Capsules.