Pterostylis valida

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Robust greenhood
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Subtribe: Pterostylidinae
Genus: Pterostylis
Species: P. valida
Binomial name
Pterostylis valida
(Nicholls) D.L.Jones[1]
  • Oligochaetochilus validus
  • Pterostylis squamata var. valida

Pterostylis valida, commonly known as the robust greenhood, is a terrestrial orchid species that is endemic to Victoria, south-eastern Australia. It was considered to be extinct until it was rediscovered in 2009 at the Nardoo Hills Reserves, a nature reserve owned by Bush Heritage Australia in central Victoria.[2]


The orchid bears two to six translucent green and white striped flowers up to 20 mm long on short stalks. The petals curve inwards, giving the flower a hooded appearance. It flowers: from October to November.[2]

Distribution and habitat[edit]

The orchid has a restricted range. Before its rediscovery, the robust greenhood was last seen at Mount Tarrengower near Maldon in 1941, with previous records limited to granite hills in the Maldon area. It had never been recorded in the vicinity of Nardoo Hills, some 90 km north-west of Maldon.[2]



  1. ^ Jones (1994).
  2. ^ a b c Clark (2011).


  • Jones, D.L. (1994). "Pterostylis valida [64598]". Muelleria. 8 (2): 191. 
  • Clark, Lynn (2011-03-07). "Extinct no more". BHA News and Media. Bush Heritage Australia. Retrieved 2011-03-21.