Pterostylis hians

Pterostylis hians is a terrestrial, perennial, deciduous, herb with an underground tuber and when not flowering, a rosette of dark green, more or less round leaves, each leaf long and wide. Flowering plants have a single bright green and white flower long and wide on a stem tall. The dorsal sepal and petals are fused, forming a hood or "galea" over the column and the dorsal sepal has a short, sharply pointed tip. The lateral sepals are held closely against the galea, have erect thread-like tips long and a protruding, platform-like sinus between their bases. The labellum is about long and wide, just visible above the sinus. Flowering occurs from March to May. ==Taxonomy and naming==

Pterostylis hians was first formally described in 1997 by David Jones from a specimen collected near Manyana and the description was published in The Orchadian. The specific epithet (hians) is a Latin word meaning "gaping" or "yawning". ==Distribution and habitat==

Opera house greenhood grows in shrubby forest in a small area near Ulladulla. ==References==