Thelymitra alpina
Thelymitra alpina, commonly known as mountain sun orchid, is a species of orchid that is endemic to south-eastern Australia. It has a single dark green leaf with a purplish base and up to twenty, usually blue to purplish flowers. It grows in alpine, subalpine and montane areas of New South Wales, the Australian Capital Territory and Victoria.
Description
Thelymitra alpina is a tuberous, perennial herb with a single erect, fleshy, channelled, linear to lance-shaped leaf long, wide. Between two and twenty blue to purplish, sometimes lilac, pink or white flowers wide are arranged on a flowering stem tall. The sepals and petals are long and wide. The column is pale blue or pinkish, long and wide. The lobe on the top of the anther is brown with a yellow, inflated, tubular tip with a V-shaped notch on the end. The side lobes have dense, mop-like tufts of white or pink hairs. Flowering occurs from October to January.
Taxonomy and naming
Thelymitra alpina was first formally described in 2013 by Jeff Jeanes from a specimen collected in the Kosciuszko National Park and the description was published in Muelleria. The specific epithet is a Latin word meaning "of high mountains".
Distribution and habitat
Mountain sun orchid sun orchid grows in grassy forest, meadow or woodland with snow gums, at altitudes of between in the highlands of New South Wales, the Australian Capital Territory and Victoria.