Dipodium roseum
| Dipodium roseum | |
|---|---|
 | |
| Inflorescence, Otways, Victoria | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Tribe: | Cymbidieae |
| Alliance: | Dipodium |
| Genus: | Dipodium |
| Species: | D. roseum |
| Binomial name | |
| Dipodium roseum D.L. Jones & M.A. Clem.[1][2] | |
Dipodium roseum, commonly known as rosy hyacinth-orchid[3] or pink hyacinth-orchid,[1] is a leafless mycoheterotrophic orchid found in east and south-eastern Australia.
Description
For most of the year, plants are dormant and have no above-ground presence. Below the ground lie fleshy roots. Flower spikes ranging from 30 to 90 cm in height appear between December and April.[3] These racemose inflorescences have 15 to 40 pink flowers with small darker spots. The sepals and petals are strongly recurved and the three-lobed labellum is pink with dark lines and a band of mauve hairs.[4] A rare white-flowering form also exists.[3]
Taxonomy
The species was formally described in 1991. The type specimen was collected in Montrose in Victoria's Dandenong Ranges.[1] The species was previously included in a wider circumscription of Dipodium punctatum.[1]
Distribution and habitat
Dipodium roseum occurs in dry woodland in the states of Queensland, New South Wales, Victoria, South Australia, Australian Capital Territory and Tasmania.[4]
Ecology
Pollination of this species, as for all species in the genus, is by native bees and wasps.[5]
Cultivation
No leafless species of Dipodium has been sustained in cultivation due to the inability to replicate its association with mycorrhizal fungi in a horticultural context.[5]
References
- 1 2 3 4 "Dipodium roseum". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 24 January 2014.
- ↑ "Dipodium roseum M.A.Clem. & D.L.Jones". The Plant List version 1.1. Retrieved 24 January 2014.
- 1 2 3 "Dipodium roseum". Yarra Ranges Local Plant Directory. Yarra Ranges Shire Council. Retrieved 24 January 2014.
- 1 2 Weston, P.H. "Dipodium roseum M.A.Clem. & D.L.Jones". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 24 January 2014.
- 1 2 Jones, David L. (2006). A complete guide to native orchids of Australia, including the island territories. Australia: Reed New Holland Publishers. ISBN 9781877069123.
External links
Media related to Dipodium roseum at Wikimedia Commons
Data related to Dipodium roseum at Wikispecies