365Caws is now in its 14th year of publication, and was originally intended to end after 365 days. It has sometimes been difficult for me to find new material, particularly during the winter months, but now as I enter my own twilight years, I cannot guarantee that I will be able to provide daily posts. It is my hope that along the way I may have inspired someone to a greater curiosity about the natural world. If so, I can rest, content in the knowledge that my work here has been done.
Tuesday, April 2, 2019
Oxalis Oregana, Wood Sorrel
Day 171: Shy little Oxalis oregana (Redwood Sorrel) is common in the Pacific Northwest and often occurs fairly densely where it receives shade from Douglas-fir. Its three-lobed leaves resemble those of clover, although on a grand scale, and they are highly sensitive to light levels. When the sun breaks through the forest canopy, the leaves will fold downward in a matter of minutes, opening again when shade returns. The flowers may be white to pink, and may be marked with darker purple "nectar guides." Pollination is performed largely by syrphid flies. All parts of the plant contain oxalic acid and should not be eaten.
Labels:
Oxalis oregana,
Redwood Sorrel
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