Edit Plant: Oxalis oregana

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[[Image:OxalisOregana.jpg|thumb|left|Leaves of ''O. oregana'']] '''Redwood Sorrel''' or '''Oregon Oxalis''' ('''''Oxalis oregana''''') is a species of the wood sorrel family, [[Oxalidaceae]], native to moist [[Douglas-fir]] and [[Sequoia|Coast Redwood]] forests of western [[North America]] from southwestern [[British Columbia]], [[Washington]], [[Oregon]], and [[California]].<ref>[http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Oxalis&Species=oregana Burke Museum] — WTU Herbarium Image Collection </ref><ref>[http://plants.usda.gov/java/profile?symbol=OXOR Plant Profile for ''Oxalis oregana''] — USDA Plant Database </ref> It is a short [[herbaceous]] [[perennial plant]] with erect flowering stems 5-15 cm tall. The three [[leaf|leaflets]] are heart-shaped, 1-4.5 cm long with purplish undersides, 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.<ref>[http://www-saps.plantsci.cam.ac.uk/records/rec117.htm SAPS] — Science And Plants for Schools</ref> 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.<ref>[http://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Oxalis+oregana E-Flora BC] — Electronic Atlas of the Plants of British Columbia</ref> The leaves of ''Oxalis oregana'' were eaten by [[Indigenous peoples of the Americas|Native Americans]], probably in small quantities, since they contain mildly toxic [[oxalic acid]], whence the genus name.<ref>{{cite book | last = Pojar | first = Jim | coauthors = Andy MacKinnon | title = Plants Of The Pacific Northwest Coast: Washington, Oregon, British Columbia & Alaska | publisher = Lone Pine Publishing | date = 2004 | isbn = 978-1551055305}} </ref> {{Inc| Oxalis oregana, Nutt. Low: lfts. broadly obcordate, 1-2 in. wide: fls. white or rosy, yellowish at base, deeper veined. N. W. coast. }} ==Cultivation== ===Propagation=== ===Pests and diseases=== ==Varieties== ==Gallery== <gallery perrow=5> Image:Upload.png| photo 1 Image:Upload.png| photo 2 Image:Upload.png| photo 3 </gallery> ==References== <references/> *[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963    ==External links== *{{wplink}} {{stub}} __NOTOC__

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