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Corallorhiza trifida

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Corallorhiza trifida, commonly known as early coralroot, northern coralroot, or yellow coralroot, is a coralroot orchid native to North America and Eurasia, with a circumboreal distribution. The species has been reported from the United States, Canada, Russia, China, Japan, Korea, India, Nepal, Kashmir, Greenland, Pakistan, and almost every country in Europe.<ref>Kew World Checklist of Selected Plant Families</ref><ref name="Gleason, H. A. 1991">Gleason, H. A. & A.J. Cronquist. 1991. Manual of the Vascular Plants of Northeastern United States and Adjacent Canada (ed. 2) i–910. New York Botanical Garden, Bronx.</ref><ref name="Gleason, H. A. 1991"/><ref>Template:EFloras</ref><ref>Template:EFloras</ref><ref>Böcher, T. W. 1978. Greenlands Flora 326 pp.</ref><ref>Porsild, A. E. & W. Cody. 1980. Checklist of the Vascular Plants of the Northwest Territories Canada i–viii, 1–607. National Museum of Natural Sciences, Ottawa.</ref><ref>Tolmatchev, A. I. 1963. Arkticheskaia Flora SSSR 4: 1–96.</ref><ref>Flora Italiana, Corallorhiza trifida Chatel.</ref>


Corallorhiza trifida is yellowish green in color, leafless, and partially myco-heterotrophic, deriving some, but not all of its nutrients from association with fungi of genus Tomentella.<ref name=zimmer>Zimmer, K., et al. (2008). The ectomycorrhizal specialist orchid Corallorhiza trifida is a partial myco-heterotroph. New Phytologist 178:2 395-400.</ref> It also contains chlorophyll, with which it supplies some of its own carbon nutrition via autotrophy.<ref name=zimmer/>

Closeup of a flower



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