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Description: The Royal Botanical Gardens of Kew list 880 genera and nearly 22,000 accepted species, but the exact number is unknown (perhaps as many as 25,000)[3] because of taxonomic disputes. The number of orchid species equals about four times the number of mammal species, or more than twice the number of bird species. It also encompasses about 6–11% of all seed plants.[4] About 800 new orchid species are described each year. The largest genera are Bulbophyllum (2,000 species), Epidendrum (1,500 species), Dendrobium (1,400 species) and Pleurothallis (1,000 species). The family also includes the Vanilla (the genus of the vanilla plant), Orchis (type genus) and many commonly cultivated plants like some Phalaenopsis or Cattleya.
Moreover, since the introduction of tropical species in the 19th century, horticulturists have produced more than 100,000 hybrids and cultivars.
The complex mechanisms which orchids evolve to achieve cross-pollination were investigated by Charles Darwin and described in his 1862 book Fertilisation of Orchids.
Tags: The Ottawa Orchid Society (OOS) was founded in 1978 to promote and assist in every way the knowledge, appreciation, culture, study, development, improvement and conservation of orchids. The OOS is affiliated with the Canadian Orchid Congress (COC) and wit |
| Posted: 03/29/2010, 1:49 pm by raypilon |
| Category: Flowers |
| Size: 600x399 |
| Resolution: Web resolution |
| File format: JPG images |
| File size: 34.858 KB |
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