The Friends of Shenton Bushland Inc. |
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Bushland Activities page (blog) Bushland Management Strategies Guided walks:
Natural Control Systems (with Gall Rust) |
Playing TricksOrchids often play tricks so that they can be pollinated without having to produce scent or food to attract insects. The centre of this orchid resembles a pea flower. Nearby you may see real pea flowers - for example egg and bacon plants (Nemcia capitatam) that are flowering nearby at the same time and the Donkey Orchid is often pollinated by an insect that mistakes the orchid for the flower of a pea.
These orchids also depend upon fungi called mycorrhiza to help them survive. Many orchids produce tiny seeds that have to wait until they are invaded by fungi in the soil before they can germinate. Once the fungus invades the orchid seed, the orchid germinates and begins to grow, consuming the fungus as it grows. Other orchids are able to germinate without a fungus, but need the fungus to support them during the early stage of growth until a leaf has developed to support their growth. This appears to be a one-way relationship, in which the fungus sacrifices itself to support the orchid, and gets nothing in return! However, sometimes the fungus manages to turn the tables on the orchid and will consume it instead. |
Created by Daniel Boase-Jelinek August 2004
All photographs are copyright of Daniel Boase-Jelinek unless otherwise indicated.
The logo of the Friends of Shenton Bushland is copyright of June L. Weller
Last updated November 2006