Trigonidium egertonianum Bateman ex Lindl. 1838 Photo courtesy of Jay Pfahl

Part shadeWarm to CoolMOSTLY LATE Winterto Summer

Common Name Egerton's Trigonidium [English Orchid Enthusiast 1800's]

Flower Size 1 1/2" [4 cm]

Found from Mexico, Belize, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Venezuela and Guyana as a medium sized, hot to warm growing epiphyte in lowland forests at elevations of sealevel to 1000 meters with clustered, ovoid to ellipsoid, compressed pseudobulbs carrying 2 apical, linear-oblanceolate, acute to obtuse, conduplicate below into the base leaves and blooms on an erect, wiry, 1 1/2' [45 cm] long, single flowered inflorescence that has inflated, tubular bracts, and arising on a mature pseudobulb where it holds the flower at mid-leaf, occurring most in the late winter through summer although they are possible at any time of the year.

Synonyms Maxillaria brachyglossa A. Rich. & Galeotti 1845; Trigonidium brachyglossum (A. Rich. & Galeotti) Schltr. 1918; Trigonidium callistele Rchb.f. 1860; Trigonidium seemannii Rchb.f 1854; Trigonidium spatulatum Linden & Rchb.f. 1854

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as T spathulatum; Bonplandia Rchb.f 1855 as T spathulatum; Repert. Sp. Nov. Regni. Veg. Beih. 17: 74. Panama Schlechter 1922 as T seemanii; Repert. Sp. Nov. Regni. Veg. Beih. 19: 61. Costa Rica Schlechter 1923 as T seemanii; Repert. Sp. Nov. Regni. Veg. Beih. 19: 244. Costa Rica Schlechter 1923 as T seemanii; The Orchids of Panama L.O. Williams & P Allen 1946 drawing good; AOS Bulletin Vol 27 No 6 1958; AOS Bulletin Vol 30 No 9 1961; Venezuelan Orchids Illustrated Vol 3 Dunsterville & Garay 1965 drawing good; Encyclopedia of Cultivated Orchids Hawkes 1965 drawing good; Flora de Venezuela Foldats Volumen XV Part 4 1970 drawing ok; Las Orquideas De El Salvador Vol 2 Hamer 1974 drawing/photo fide; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing good; AOS Bulletin Vol 49 No 7 1980 drawing; Icones Planetarum Tropicarum Plate 345 Dodson 1980 drawing fide; Icones Planetarum Tropicarum Plate 1189 Dodson 1984 drawing fide; Icones Planetarum Tropicarum Plate 1190 Dodson 1984 as Trigonidium seemanni drawing ok; Native Colombian Orchids Vol 4 COS 1992 photo fide; Die Orchideen lieferung 29 Schlechter/Brieger 1994 photo good; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1997; Venezuela; Paraiso de Orquideas Romero 1997 photo fide; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing good; Native Ecuadorian Orchids Vol 5 Dodson 2004 photo ok; Orquideas de la Serrania del Baudo Misas Urreta 2006 drawing/photo fide; Orchids of Costa Rica Vol 1 Morales 2009 photo fide; An Illustrated Field Guide to the Orchids of the Yotoco Forest Reserve Colombia Kolanowska, Escobar, Sanchez & Szlachetko 2011 drawing ok/photo fide; Algunas Orquideas De Mexico Tomo 1 Suarez 2012 photo fide; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 photo fide

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