Friday, September 7, 2012

Saravanan: Commensalism

Dendrobium kingianum
An Australia native which grows on the trunks and branches of trees; it derives the benefit of support from the tree, but 1) it can live without the tree and 2) the tree doesn't even notice the presence of this plant.

Dendrobium upin king (yes, that is a binomial)

This Dend. is a species which grows in large stands on trees, giving many off-shoots and many, many, many epiphytic roots. It's a slow grower, but in 50 years, it will cover the side of a tree that it germinated on. Again, the tree derives neither a benefit nor harm, and the plant can live without the tree. It's commensalism!


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