| Crested coralroot | |
|---|---|
| |
| Hexalectris spicata | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Tribe: | Epidendreae |
| Subtribe: | Bletiinae |
| Genus: | Hexalectris Raf. |
| Type species | |
| Hexalectris spicata (Walter) Barnhart | |
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. 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 | Distribution |
|---|---|---|
| Hexalectris arizonica (S.Watson) A.H.Kenn. & L.E.Watson (2010) | Arizona, New Mexico, Texas, Coahuila | |
| Hexalectris brevicaulis L.O.Williams (1940) | central and southern Mexico | |
| Hexalectris 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 | |
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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 |
References
- NRCS. "Hexalectris". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 14 May 2015.
- "Flora of North America".
- ^ Kew World Checklist of Selected Plant Families
- ^ Luer, Carlyle A (1975). The native orchids of the United States and Canada, excluding Florida. New York: New York Botanical Garden. OCLC 1348145.
- Kennedy, Aaron H.; Watson, Linda E. (2010). "Species Delimitations and Phylogenetic Relationships within the Fully Myco-heterotrophic Hexalectris (Orchidaceae)". Systematic Botany. 35 (1): 64–76. doi:10.1600/036364410790862489. S2CID 85734959.
- Kennedy, Aaron H.; Taylor, D. Lee; Watson, Linda E. (2011-03-01). "Mycorrhizal specificity in the fully mycoheterotrophic Hexalectris Raf. (Orchidaceae: Epidendroideae)". Molecular Ecology. 20 (6): 1303–1316. doi:10.1111/j.1365-294x.2011.05000.x. ISSN 1365-294X. PMID 21255173. S2CID 17740766.
- Coleman, Ronald A. (2005). "Populations Studies in Dichromanthus and Hexalectris in Southeastern Arizona". Selbyana. 26 (1/2): 246–250. JSTOR 41760196.
External links
Media related to Hexalectris at Wikimedia Commons
Data related to Hexalectris at Wikispecies
