Species of orchid
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Thelymitra planicola, commonly called the glaucous sun orchid, is a species of orchid that is endemic to southern eastern Australia. It has a single erect, leathery, channelled, dark green leaf and up to twelve blue flowers with darker veins. The plant has a bluish green hue and the flowers are self-pollinating, only opening widely on hot days.
Description.
"Thelymitra peniculata" is a glaucous, tuberous, perennial herb with a single erect, dark green, leathery, channelled, linear to lance-shaped leaf long and wide with a purplish base. Between two and twelve medium blue flowers with darker veins, wide are arranged on a flowering stem tall. The sepals and petals are long and wide. The column is white to pale blue, long and wide. The lobe on the top of the anther is dark blackish brown with a brown band and a yellow tip, tubular and gently curved with a slightly notched tip. The side lobes are parallel to each other and have toothbrush-like tufts of white hairs. Flowering occurs in October and November but the flowers are self-pollinating and only open fully on hot days.
Taxonomy and naming.
"Thelymitra planicola" was first formally described in 2000 by Jeff Jeanes from a specimen collected near Golden Beach and the description was published in "Muelleria" . The specific epithet ("planicola") is derived from the Latin word "planus" meaning "even", "flat" or "level" and the suffix "-cola" meaning "dweller", referring to the plain-dwelling preference of this orchid.
Distribution and habitat.
The glaucous sun orchid grows in grassland and grassy forest in scattered populations in New South Wales and Victoria.
References.
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