Thelymitra alcockiae explained

Thelymitra alcockiae, commonly called Kath's sun orchid, is a species of orchid that is endemic to southern continental Australia. It has a single long, narrow leaf and up to twelve pale blue to deep purplish blue flowers, mauve or reddish on their back side.

Description

Thelymitra alcockiae is a tuberous, perennial herb with a single fleshy, channelled, linear to lance-shaped leaf NaNsigfig=1NaNsigfig=1 long, NaNsigfig=1NaNsigfig=1 wide. Between two and twelve pale blue to deep purplish blue, rarely white flowers NaNsigfig=1NaNsigfig=1 wide are arranged on a flowering stem NaNsigfig=1NaNsigfig=1 tall. The sepals and petals are NaNsigfig=1NaNsigfig=1 long, NaNsigfig=1NaNsigfig=1 wide and mauve or reddish on the reverse side. The column is pale blue or pinkish, NaNsigfig=2NaNsigfig=2 long and about 2sigfig=1NaNsigfig=1 wide. The lobe on the top of the anther is brown with a yellow tip, tubular and sharply curved with an inflated tip. The side lobes have dense, mop-like tufts of white hairs. Flowering occurs from August to October.[1] [2] [3]

Taxonomy and naming

Thelymitra alcockiae was first formally described in 2013 by Jeff Jeanes after an unpublished description by David Jones. The formal description was published in Muelleria from a specimen collected near Naracoorte.[4] The specific epithet (alcockiae) honours "Kath Alcock (1925-), botanical artist and field naturalist".

Distribution and habitat

Kath's sun orchid usually grows in drier habitats including shrubland, open forest and woodland. It is locally common in the north-west of Victoria and in South Australia.

Notes and References

  1. Book: Jones. David L.. A complete guide to native orchids of Australia including the island territories. 2006. New Holland. Frenchs Forest, N.S.W.. 1877069124. 229.
  2. Jeanes. Jeffrey A.. An overview of the Thelymitra nuda (Orchidaceae) complex in Australia including the description of six new species. Muelleria. 2013. 31. 15–16. 11 May 2018.
  3. Web site: Jeanes. Jeff. Stajsic. Val. Thelymitra alcockiae. Royal Botanic Gardens Victoria. 11 May 2018.
  4. Web site: Thelymitra alcockiae. APNI. 11 May 2018.