Description The Frog Greenhood is a green flowered ground orchid from the south west of Western Australia. The flowers are dark green and lighter green with the dorsal sepals and petals fused into a blunt hood; the lateral sepals are pointed downwards. The flower is supposed to have a resemblance to a frog, hence the common name. Flowers are produced in clusters of up to six, on stems up to 20 cm long, with individual flowers about 2 cm long. The plant does not have a rosette of leaves at the base. This orchid grows in small colonies.
Habitat heathland, rocky outcrops with shrub cover, open woodland
Distribution Pterostylis sargentii is found in the south west comer of Western Australia