Archive | October, 2012

Common and Oregon ash species profiles

17 Oct

Let’s take a break from all the issues and events for a long-absent species profile.

For reasons that you’d have to extract from me over drinks, I’d have to say that the ash is my absolute favorite tree. I feel a very personal connection to them — particularly the common ash, Fraxinus excelsior. (Incidentally, this would have been the species of Yggdrasil, the World Ash of Norse mythology.) The only native ash in the Pacific Northwest is Fraxinus latifolia, the Oregon ash, so I feel obliged to look at that, too. In fact, I’d like to take more of a class approach in this particular “species” profile.

It is pretty easy to identify a true ash, which is to say, any member of the genus Fraxinus. They are unique in having opposite branching and compound leaves, meaning all buds and twigs arise directly opposite from one another, and each leaf is composed of several leaflets.

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Current issues roundup: You’re not going crazy edition

3 Oct

It’s common enough to hear people jokingly refer to vegetarians as plant murderers. But today I present you with a study that may cast this notion in a strange new light. That’s right: plants can communicate using sound — and I’m not just talking about the Botanicals Twitter Kit.

Researchers from Britain, Italy and Australia recently found that plants not only respond to sound, but likely use clicking sounds to communicate with one another. The report, published in Trends in Plant Science, details experiments that used powerful acoustic equipment to record clicking sounds coming from the roots of corn plants. A simulated noise produced at the same frequency also caused young roots to grow in the direction of the sound.

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