For Hexalectris
Catling, P.M. 2004. A synopsis of the genus Hexalectris in the United States and a new variety of Hexalectris revoluta. Native Orchid Conference Journal 1: 5-25. Google Scholar
Catling, P.M., and V.S. Engel. 1993. Systematics and distribution of Hexalectris spicata var. arizonica (Orchidaceae). Lindleyana 8: 119-125. Google Scholar
Correll, D.S. 1950. Native orchids of North America north of Mexico. Chronica Botanica Cp., Waltham, MA. 399 pp. Google Scholar
Goldman, D.H., R.A. Coleman, L.K. Magrath, and P.M. Catling. 2002. Hexalectris. In Flora of North America Editorial Committee. 2002a. Flora of North America north of Mexico. Volume 26, Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York, NY. 723 pp. Google Scholar
Kennedy, A.H., and L.E. Watson. 2010. Species delimitation and phylogenetic relationships within the fully myco-heterotrophic Hexalectris (Orchidaceae). Syst. Bot. 35: 64-76. Google Scholar
Sosa, V. 2007. A molecular and morphological phylogenetic study of subtribe Bletiinae (Epidendreae, Orchidaceae). Syst. Bot. 32: 34-42. ttps://doi.org/10.1600/036364407780360175 Google Scholar
Sosa, V., and M.W. Chase. 2020. New combinations and a new name in Bletia (Bletiinae; Orchidaceae). Phytotaxa 456 (3): 296-298. Google Scholar
Sosa, V., K.M. Cameron, D.F. Angulo, and T Hernández-Hernández. 2016. Life form evolution in epidendroid orchids: ecological consequences of the shift from epiphytism to terrestrial habit in Hexalectris. Taxon 65: 235–248. https://doi.org/10.12705/652.2 Google Scholar