Everything about Redwood Sorrel totally explained
Redwood sorrel (
Oxalis oregana) is a species of the wood sorrel family,
Oxalidaceae, native to moist
Douglas-fir and
Coast Redwood forests of western
North America from southwestern
British Columbia,
Washington,
Oregon, and
California.
It is a short
herbaceous perennial plant with erect flowering stems 5-15 cm tall. The three
leaflets are heart-shaped, 1-4.5 cm long on 5-20 cm stalks. The
inflorescence is 2.4-4 cm in diameter, white to pink with five petals and sepals. The hairy five-chambered
seed capsules are egg-shaped, 7-9 mm long; seeds are almond shaped.
Redwood sorrel photosynthesises at relatively low levels of ambient light (1/200th of full sunlight). When direct sunlight strikes the leaves they fold downwards; when shade returns, the leaves reopen. Taking only a few minutes, this movement is observable to the eye.
The leaves of
Oxalis oregana were eaten by
Native Americans, probably in small quantities, since they contain mildly toxic
oxalic acid, whence the genus name.
Further Information
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