Osmoglossum egertonii (Lindl.) Schltr. 1916
Photo by © Lourens Grobler
Photo courtesy of Danny Lentz ©, plant grown by Atlanta Botanical Garden
THROUGH EARLY 
Common Name Egerton's Osmoglossum [English Orchid Enthusiast 1800's]
Flower Size less than 1" [less than 2.5 cm]
Found in Oaxaca and Chiapas states of Mexico, Guatemala, Honduras, Costa Rica, Panam and Colombia in wet montane forests as a medium to large sized, cool to cold growing epiphyte at altitudes of 1500 to 2500 meters with often glossy yellow green, ovoid or elliptic-oblong, laterally compressed, apically tapering pseuobulbs partially enveloped by several distichous, imbricating, lower leafless, upper leaf-bearing sheaths and carrying 2 apical, thin, narrowly-linear-ligulate, leathery, acute, conduplicate below into the base leaves that blooms in the winter and spring on an axillary, erect, to 16" [40 cm] long, racemose, few to many [5 to 10] flowered, racemose inflorescence with the fragrant flowers all together towards the apex that arises from the basal sheaths of a recently mature pseudobulb and has a zig-zag rachis.
Synonyms Cuitlauzina egertonii (Lindl.) Dressler & N.H. Williams 1845; *Odontoglossum egertonii Lindl. 1845; Oncidium egertonii (Lindl.) Beer 1845; Osmoglossum acuminatum Schltr. 1922; Osmoglossum anceps Schltr.1923; Osmoglossum candidum (Linden & André) Garay 1978
References W3 Tropicos, Kew Monocot list , IPNI ; Repert. Sp. Nov. Regni. Veg. Beih. 17: 79. Panama Schlechter 1922 as O acuminatum; Repert. Sp. Nov. Regni. Veg. Beih. 19: 147. Costa Rica Schlechter 1923 as O anceps; The Orchids of Panama L.O. Williams & P Allen 1946 as Odontoglossum egertonii; Encyclopedia of Cultivated Orchids Hawkes 1965 as Odontoglossum egertoni; ORQUIDEA (Méx . ) 8(2) MARZO 1982 drawing/photo fide; Icones Planetarum Tropicarum plate 1066 Dodson 1984 as Osmoglossum anceps drawing ok; Flora Novo-Galaciana Vol 16 McVaugh 1985 as Osmoglossum egertonii; An Introdution to the Orchids of Mexico Wiard 1987 as Osmoglossum anceps photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 as O convallariodes photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 as O anceps photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 as O candidum; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Icones Orchidacearum 5 - 6 Orchids of Mexico Part 2 - 3 Plate 634 Hagsater & Soto 2002 drawing fide; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Orchid Species Culture: Oncidium, Bakers 2006; Vanishing Beauty; Native Costa Rican Orchids Vol 1 Pupulin 2005 as Cuitlauzina egertonii photo fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as Cuitlauzina egertonii
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