Hexalectris (crested coralroot) is a genus of the family Orchidaceae, comprising 10 known species of fully myco-heterotrophic orchids. These species are found in North America, with the center of diversity in northern Mexico.Kew World Checklist of Selected Plant Families None of the species are particularly common. Hexalectris spicata has a wide distribution and is likely the most abundant member of the genus, but is nevertheless infrequent throughout its range. Other species are rare, and some, such as H. colemanii, are threatened or endangered. All species that have been studied form associations with ectomycorrhizal fungi that are likely linked to surrounding trees. Many Hexalectris species are found in association with oak trees (Quercus), which are ectomycorrhizal.
Species Species accepted as of June 2014: Image Scientific name DistributionHexalectris arizonica (S.Watson) A.H.Kenn. & L.E.Watson (2010) Arizona, New Mexico, Texas, Coahuila Hexalectris brevicaulis L.O.Williams (1940) central and southern MexicoHexalectris colemanii (Catling) A.H.Kenn. & L.E.Watson (2010) southern Arizona Hexalectris fallax M.I.Rodr. & R.González (2005) Jalisco Hexalectris grandiflora (A.Rich. & Galeotti) L.O.Williams (1944) widespread from Texas and Chihuahua south to Oaxaca Hexalectris nitida L.O.Williams (1944) from Texas and New Mexico to southern Mexico Hexalectris parviflora L.O.Williams (1940) from Sonora to Guatemala Hexalectris revoluta Correll (1941) western Texas, southeastern New Mexico, northeastern Mexico Hexalectris spicata (Walter) Barnhart (1904) United States from Arizona east to Florida and Maryland Hexalectris warnockii Ames & Correll (1943 Arizona, New Mexico, Texas, northern Mexico
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