Rhizanthella

to get instant updates about 'Rhizanthella' on your MyPage. Meet other similar minded people. Its Free!

X 

All Updates


Description:
Rhizanthella, commonly known as underground orchids, is a small epiparasitic, achlorophyllous, subterranean genus of orchid endemic native to Australia. It is abbreviated in trade journals as Rhi.

These orchids are rare and their status is considered vulnerable to critical, mostly due to loss of habitat. They live underground in symbiosis with mycorrhizal fungi. These subterranean rhizomes or tubers are short and thickened, without roots, serving as storage for the orchid. The leaves are absent.

When the orchid prepares to flower, the solitary inflorescences break through the surface, beneath the leaf litter. The terminal inflorescence is racemose. It gives rise to a cluster of small, tubular, hermaphroditic flowers. The fragrant flowerheads are about 5 cm wide and contain numerous, inward-facing, small flowers.

Pollination is carried out by small flies or insects, even underground by termites or gnats. The fruit is a fleshy, indehiscent drupe with about 250 minute seeds.

Their discovery in 1928 caused such an excitement among orchid lovers, that a wax model had to be toured around Britain.

Reference works

  • George, A. S. (1981). Rhizanthella-The Underground Orchid of Western Australia. Proceedings of the Orchid Symposium, 13th International Botanical Congress 77-78.
  • Dixon, K. W., et al. (1990). The Western Australian fully subterranean orchid Rhizanthella gardneri. Orchid Biology, Reviews and Perspectives. V. J. Arditti. Portland, Oregon, Timber Press. 5: 37-62.
  • ......
  • ...

Read More

No feeds found

All
Posting your question. Please wait!...


No updates available.
No messages found
Suggested Pages
Tell your friends >
about this page
 Create a new Page
for companies, colleges, celebrities or anything you like.Get updates on MyPage.
Create a new Page
 Find your friends
  Find friends on MyPage from