Prasophyllum parviflorum

Prasophyllum parviflorum, commonly known as the slender leek orchid, is a species of orchid endemic to eastern Victoria. It has a single tubular leaf and up to thirty greenish-brown to purplish flowers. Further studies of the species may indicate that some collections currently included may be of a different species.
Description.
"Prasophyllum parviflorum" is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped leaf long and wide. Between ten and thirty flowers are widely spaced along flowering stem long which reaches to a height of . The flowers are greenish-brown to purplish and as with others in the genus, are inverted so that the labellum is above the column rather than below it. The ovary is oval-shaped and about long. The dorsal sepal is a tapering egg shape, about long and wide. The lateral sepals are lance-shaped, curved, about long, wide and fused at their bases. The petals are long, wide and curve forwards. The labellum is variably coloured, about long, wide and sharply upwards near its middle. There is a broad, fleshy, glossy callus along the centre of the labellum and extending nearly to its tip. Flowering occurs in October and November.
Taxonomy and naming.
The slender leek orchid was first formally described in 1930 by Richard Sanders Rogers who gave it the name "Prasophyllum hartii" var. "parviflorum" and published the description in "Transactions and Proceedings of the Royal Society of South Australia" from a specimen collected on Wilsons Promontory. In 1941, William Henry Nicholls raised the variety to species status.
Distribution and habitat.
"Prasophyllum parviflorum" grows in grassland and grassy areas in woodland east from French Island to the New South Wales border. Specimens collected in the west of the state may be "P. suaveolens" and small plants may, with further studies, be shown to be a separate species.
Conservation.
"Prasophyllum parviflorum" is listed as "Vulnerable" under the Victorian "Flora and Fauna Guarantee Act 1988".