Lake Washington, October 21, 2010

One uncommon plant and a few common ones. These were all found on the north side of the park.

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Twinevine (Sarcostemma clausum, Apocynaceae)

Native

Note how the vine climbs around itself, causing it to resemble twine. (Dec. 17--now that I've just put up our outdoor Christmas decorations, I can say that the vine looks exactly like the twisted green cords of a string of Christmas lights.) This plant is a relative of the milkweeds.

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Spanish needles (Bidens alba, Asteraceae)

Native

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 Peruvian primrosewillow (Ludwigia peruviana, Onagraceae)

Not native

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Wax myrtle (Myrica cerifera, Myricaceae)

Native

Wax-covered fruit.

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Wild poinsettia (Poinsettia cyathophora, Euphorbiaceae)

Native

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Balsampear (Momordica charantia, Cucurbitaeae)

Not native

Invasive. Fruit is poisonous.

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Shrubby false buttonweed (Spermacoce verticillata, Rubiaceae)
Not native

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