(pronounced: kal-oh-POH-gon)


Arethuseae subtribe Bletiinae

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Terrestrials arising from corms. Leaves basal, plicate, erect, linear-lanceolate. Inflorescences erect, terminal, long-scapose racemes, the floral bracts insignificant. Flowers not resupinate, showy, pink. Sepals and petals free, spreading. Lip three-lobed, the lateral lobes basal, minute, the midlobe with a beard of long trichomes (pseudopollen). Column elongate, arching, with large apical wings, without a foot; pollinia 4, in two pairs, granular.


From the Greek kalos, meaning beautiful, and pogon, meaning beard, in reference to the trichomes on the lip that mimic a cluster of anthers (pseudopollen).


A genus of four species in eastern North America and the West Indies.

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Catling, P. M. and Z. Lucas 1987. The status of Calopogon tuberosus var. latifolius with comments on the application of varietal rank. Rhodora 89:401-413.

Eastman, L. M. 1988. Calopogon tuberosus var. latifolius (St. John) Boivin (Orchidaceae) new to the United States. Rhodora 90:101.

Goldman, D. H. 1998. (1331) Proposal to conserve the name Ophrys barbata (Orchidaceae) with a conserved type. Taxon 47(1):161-162.

Goldman, D. H. and S. L. Orzell 2000. Morphological, geographical, and ecological re-evaluation of Calopogon multiflorus (Orchidaceae). Lindleyana 15(4):237-251.

Magrath, L. K. and J. L. Norman 1989. Nomenclatural notes on Calopogon, Corallorhiza and Cypripedium (Orchidaceae) in the Great Plains region. Sida 13:371-372.

Thien, L. B. 1973. Isolating mechanisms in the genus Calopogon. Amer. Orchid Soc. Bull. 42:794-797.

Thien, L. B. and B. G. Marcks 1972. The floral biology of Arethusa bulbosa, Calopogon tuberosus and Pogonia ophioglossoides (Orchidaceae). Canadian J. Bot. 23:19-25.