Holcoglossum amesianum
| Holcoglossum amesianum | |
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| File:Holcoglossum amesianum - Flickr 003.jpg | |
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H. amesianum
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| Binomial name | |
| Holcoglossum amesianum (Rchb.f.) Christenson (1987)
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Holcoglossum amesianum is an orchid species in the genus Holcoglossum. It is unique in the plant kingdom as the only known flower to pollinate itself.[1]
Pollination
Rather than depending on insects or even the wind for pollination, scientists have discovered that Holcoglossum amesianum actually fertilizes itself. The orchid defies gravity to twist the male part of its flower into the necessary shape to fertilize the female one.[2]
The plant does so without the help of sticky fluids or other methods used by self-pollinating plants to ensure that the pollen reaches the egg. It grows on tree trunks in China's Yunnan province and flowers during the dry, windless months of February to April.
The orchid produces no scent or nectar. Instead, the pollen-bearing anther uncovers itself and rotates into a suitable position to insert into the stigma cavity, where fertilization takes place. This sexual relationship is so exclusive that flowers do not even transfer pollen to other flowers on the same plant.
References
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- Pervy orchids Sequenced photos of self-pollinating Holcoglossum
- ↑ Observed, Smithsonian, September 2006, p. 24
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
