Color, greenish yellow. Flowers, generally in pairs, on scapes, 5 or 6 inches high, which bear a whorl of 5 leaves at the summit. Above this whorl of leaves thick, somewhat hairy peduncles stand, the flower-stems, which later produce a rather large capsule. Lip, crested. Sepals and petals of nearly equal size.

Moist woods, Vermont and Massachusetts to New Jersey and Pennsylvania. So rare as not to be very well understood.