Monday, August 20, 2007

Cycas in Krabi

....most likely C. clivicola, its trunk extends from its precarious perch like tentacles of a primieval monster ....

Sunday, August 19, 2007

Hoya lasiantha

....a bunch of extracted molars....what a weird design.

Monday, August 13, 2007

David Attenborough on Rafflesia

"Why should the flower be so extraordinarily big and out of proportion to the rest of the body , the threads hidden within the tissue of the vine ? Its wide spreading petals cannot assist in the dispersal of its scent, as the tail spadix of the titan arum almost certainly does.... Plants, like any other living things, are ruled by cost-efficiency budgets. The food and energy they expend in growing flowers, leaves or any other organs must normally bring a commensurate advantage of some kind. But Rafflesia may not be so curbed. It does not, after all, earn the food it expends. *It takes it straight from the vine. Provided that the vine is not weakened by the loss to the point of death, there seems to be no limit to the amount the Rafflesia may extract and therefore no limit to the size of the flower it constructs. Maybe an unearned income in the plant world, as elsewhere, can lead to profligacy and extravagance on a truly monumental scale." 

*Rafflesia is a parasite on Tetrastigma vine.

From "The Private life of plants"

Thursday, August 9, 2007

David Attenborough's encounter with Amorphophallus Titanum in Sumatra

"Finding a flower with such a such a *brief life is clearly not easy .... a never-to-be-forgotten thrill....It was so out of scale with every other plant around it that it seemed to belong to another world, to have landed perhaps from outer space. For some indefinable reason I felt that it would not be surprising to see it make some convulsive movement." "Such a gigantic inflorescence seems unnecessarily large to attract pollinators as small as sweat bees or even carrion beetles. However, its size is more likely connected with the pungency and distribution of its odour than the size of its pollinators.
To produce its perfume, the plant raises its internal temperature secreted in its heart. The perfume then emerges from a slit in the side of the spadix. It would be more accurate, therefore, to compare the spadix with a factory chimney rather than a church spire, and plainly the taller it is, the more widely it will disperse its scent. And it is indeed spectacularly successful in doing so, for the villagers who had guided us to the flower told us that even they had discovered it by sniffing in the air from fifty yards away."

From "The private life of plants".

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