Epidendrum oxysepalum Hágsater & E. Santiago A. 2004 GROUP Diothonea SUBGROUP Diothonea
Photo by © Cesar Fernandez
TYPE Drawing by © Hagsater and The AMO Herbario Website
Photo by © Jay Pfahl.
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LATE 
Common Name The Pointed Sepals Epidendrum
Flower Size 3/4" [1.8 cm]
Found in western Venezuela and the eastern cordillera of Colombia in cloud forests at elevations of 2800 to 3900 meters as a small to medium sized, cold growing epiphyte or terrestrial with branching, erect, cane-like, terete, straight stems arising from near the apex of the previous stem and carrying, subcoricaeous, lanceolate, unequally bilobed apically, entire to slightly crenulate margins towards the apex leaves that blooms in the late spring through winter on an apical, racemose, short, arching-nutant inflorescence arising with linear-lanceolate, acuminate floral bract and has 5 to 11, simultaneous, resupinate flowers.
"Epidendrum oxysepalum belongs to the GROUP Diothonea SUBGROUP Diothonea characterized by the branching habit, linear-lanceolate to lanceolate, bilobed leaves, arching-nutant, racemose inflorescence, membranaceous or rarely fleshy flowers, entire to 3-lobed lip, with an erose margin, ecallose, without or with 1 to 10 thin, smooth to erose keels, the column united to the lip from totally or obliquely to free, and the reniform anther. This new species is recognized by the simultaneous, small, brown-yellowish to purple-pink flowers on a short, compact inflorescence, an arching column, acute tepals, and an entire, straight, cordiform lip with 3 to 5 keels on the disc of the lip. It is similar to Epidendrum restrepoanum which grows in the same general area and has red flowers with a yellow lip and column, externally warty, pustulate sepals, an arching, nearly completely free column, deeply cordate, three-lobed lip, shallowly emarginate and 5 to 7 keeled, and the dorsal sepal nearly as wide as it is long and round. Epidendrum dolichorhachis Hágsater & Dodson, has an elongate, many-flowered inflorescence 2.4 to 5" [6 to 12.5 cm] long, slightly sigmoid column with a pair of short, involute, ventral wings, and a 3-lobed lip with 5 serrulate keels." Hagsater etal. 2004
References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 7 Plate 772 Hagsater 2004 drawing fide; Orquideologia 24: 3 Ortiz & Hagsater 2005 photo fide; Icones Orchidacearum 9 Plate 915 Hagsater 2007 see recognition section; Icones Orchidacearum 9 Plate 979 Hagsater 2007 see recognition section; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017 drawing/photo fide;
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