Associations
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Fungus / parasite
plant of Corallorhiza trifida parasitises ectomycorrhiza of Thelephora
Fungus / parasite
plant of Corallorhiza trifida parasitises ectomycorrhiza of Tomentella
Comments
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Corallorhiza trifida is largely autogamous, although a syrphid fly (Syrphus cinctellus) was reported as a pollinator by F. Silen (1906). Various floral morphs exist, some with weak geographic correlation; they do not appear to warrant taxonomic recognition. Variants of C. odontorhiza, C. wisteriana, and C. maculata without red and purple pigments in sepals and petals are occasionally misidentified as C. trifida.
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Description
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Stems ± strongly thickened, base not bulbous. Inflorescences: racemes lax to dense, 8–35 × 1–3 cm. Flowers 3–18, inconspicuous; perianth open; sepals spreading, yellowish to green, lanceolate, 1-veined, 3.5–7 mm; lateral sepals often strongly recurved; petals arching over and clasping column, light yellow-green, often spotted with purple, lanceolate, 1-veined, 3–5.5 mm; lip white, often purple spotted, 2.5–4 × 1.5–3 mm, thin, with 2 small lateral lobes or teeth, middle lobe oblong, often somewhat dilated near apex, with 2 distinct basal lamellae; column curved toward lip, yellowish green, sometimes spotted purple basally, with shallow adaxial channel, 2–3.3 mm; ovary 2.1–6.5 mm; mentum inconspicuous. Capsules ellipsoid, 4.5–15 × 4.3–6 mm. 2n = 42.
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Distribution
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Greenland; St. Pierre and Miquelon; Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon; Alaska, Calif., Colo., Conn., Del., D.C., Idaho, Ill., Ind., Maine, Md., Mass., Mich., Minn., Mont., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Utah, Vt., Wash., W.Va., Wis., Wyo.; Eurasia.
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Flowering/Fruiting
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Flowering spring--summer.
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Habitat
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Coniferous, deciduous, and mixed woods, swamps, mountain woods, upland habitats northward, restricted to cool, moist habitats southward; 0--3100m.
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Synonym
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Corallorhiza corallorhiza (Linnaeus) MacMillan; C. corallorhiza var. coloradensis Cockerell; C. innata R. Brown; C. innata var. virescens Farr; C. trifida var. verna (Nuttall) Fernald; C. trifida var. virescens (Farr) Fernald; C. verna Nuttall; C. wyomingensis Hellmayr & K. Hellmayr
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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, Pakistan, and almost every country in Europe.[2][3][4][5][6][7][8][9]
Description
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.[10] It also contains chlorophyll, with which it supplies some of its own carbon nutrition via autotrophy.[10]
References
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^ "Corallorhiza trifida". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
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^ Kew World Checklist of Selected Plant Families
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^ 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.
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^ Magrath, Lawrence K.; Freudenstein, John V. (2002). "Corallorhiza trifida". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 26. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
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^ Chen, Xinqi; Gale, Stephan W.; Cribb, Phillip J. "Corallorhiza trifida". Flora of China. Vol. 25 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
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^ Böcher, T. W. 1978. Greenlands Flora 326 pp.
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^ 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.
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^ Tolmatchev, A. I. 1963. Arkticheskaia Flora SSSR 4: 1–96.
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^ Flora Italiana, Corallorhiza trifida Chatel.
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^ a b Zimmer, K., et al. (2008). The ectomycorrhizal specialist orchid Corallorhiza trifida is a partial myco-heterotroph. New Phytologist 178:2 395-400.
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Corallorhiza trifida: Brief Summary
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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, Pakistan, and almost every country in Europe.
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