List of the orchids of Western Australia
Among the many wildflowers in Western Australia, there are around four hundred species of orchids.
Early identifications
One of the first botanists to study Western Australia was Archibald Menzies, aboard HMS Discovery, who explored King George Sound in 1791. Many of the samples were lost in the return to England, but those that did survive were documented in Prodromus Florae Novae Hollandiae et Insulae Van Diemen, published by Robert Brown in 1810.The first three orchids from Western Australia to be named were Caladenia menziesii, Caladenia flava, and Diuris longifolia.
In 1802 Robert Brown himself collected 500 specimens of flora from Western Australia, including:
- Diuris emarginata var. emarginata
- Diuris emarginata var. pauciflora
- Diuris setacea
- Epiblema grandiflorum
- Microtis alba
- Microtis media
- Microtis pulchella
- Prasophyllum gibbosum
- Prasophyllum macrostachyum
- Thelymitra canaliculata
- Thelymitra tigrina
- Thelymitra fuscolutea
Orchids of South Western Australia
| Common name | Genus | No. species in southwest W.A. | Remarks |
| Babe-in-a-cradle | Epiblema | 1 | - |
| Beard orchids | Calochilus | 6 | |
| Blue orchids | Cyanicula | 11 | |
| Bunny orchids | Eriochilus | 6 | |
| Donkey orchid | Diuris | ~36 | |
| Duck orchids | Paracaleana | 13 | |
| Elbow orchid | Spiculaea | 1 | |
| Enamel orchids | Elythranthera | 2 | |
| Fairy orchid | Pheladenia | 1 | |
| Fire orchids | Pyrorchis | 2 | also Beak orchids |
| Greenhoods | Pterostylis | ~90 | |
| Hammer orchids | Drakaea | 10 | |
| Hare orchid | Leporella | 1 | |
| Helmet orchids | Corybas | 4 | |
| Leafless orchid | Praecoxanthus | 1 | |
| Leek orchids | Prasophyllum | 25 | |
| Mignonette orchids | Microtis | 14 | also Onion orchid |
| Mosquito orchids | Cyrtostylis | 5 | |
| Potato orchids | Gastrodia | 1 | also Bell orchid |
| Pygmy orchid | Corunastylis | 1 | |
| Rabbit orchid | Leptoceras | 1 | |
| Rattle beaks | Lyperanthus | 1 | |
| Slipper orchids | Cryptostylis | 1 | also Tongue orchid |
| South African orchids | Disa bracteata | 1 | introduced |
| Spider orchids | Caladenia | 125 | |
| Sugar orchid | Ericksonella | 1 | |
| Sun orchids | Thelymitra | 37 | |
| Underground orchids | Rhizanthella | 1 |
- This table has its source as the Second Edition of Hoffman and Brown in 1992