2010 年 28 巻 p. 41-51
A field survey for the distribution and ecological characteristics of native orchids was conducted in south-west of Western Australia from 9 to 14 Oct. 2003 and from 23 to 26 Aug. 2007. We have observed 18 genera and 94 taxa( species and subspecies) of the terrestrial orchids in twice field survey. The flowering plants of rare and endangered Purdie’s Donkey Orchid (Diuris purdiei) were observed on 14 Oct. 2003. The characteristics of the observed typical orchids were described here.