Tuesday, August 11, 2009

Giant carnivorous plant found

In a coincidental follow-up to yesterday's post, a new species of giant carnivorous plant has been discovered in the highlands of the central Philippines.

The pitcher plant is among the largest of all pitchers and is so big that it can catch rats as well as insects in its leafy trap. Botanists have named the pitcher plant after British natural history broadcaster David Attenborough (Nepenthes attenboroughii).

Pitcher plants are carnivorous. Carnivorous plants come in many forms, and are known to have independently evolved at least six separate times. While some have sticky surfaces that act like flypaper, others like the Venus fly trap are snap traps, closing their leaves around their prey.

Pitchers create tube-like leaf structures into which insects and other small animals tumble and become trapped.

The pitcher plant does not appear to grow in large numbers, but McPherson hopes the remote, inaccessible mountain-top location, which has only been climbed a handful of times, will help prevent poachers from reaching it.

During the expedition, the team also encountered another pitcher, Nepenthes deaniana, which had not been seen in the wild for 100 years. The only known existing specimens of the species were lost in a herbarium fire in 1945.

On the way down the mountain, the team also came across a striking new species of sundew, a type of sticky trap plant, which they are in the process of formally describing. Thought to be a member of the genus Drosera, the sundew produces striking large, semi-erect leaves which form a globe of blood red foliage.

Original article here.

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