I have corrected an error in previous posting Doryanthes. D. palmeri grows in Queensland and northern New South Wales and D. excelsa only grows in NSW. Thanks to both recent correspondent and also to commentator who first spotted mistake.
Flowering of D. excelsa is an uncommon event at Monserrate. There is only this small group of plants, whereas D. palmeri is represented throughout the garden. Since the clump does not flower every year this is always a welcome sight. Actually it has now flowered two years in succession 2008 & 2009.
The distribution, relative abundance and conservation status of Doryanthes palmeri (Doryanthaceae) in New South Wales
D. A. Perry