Epidendrum angustatum (T.Hashim.) Dodson 1993 GROUP Difforme

TYPE Photo © by Esteban Dominguez/TYPE Drawing by © Jimenez, Hágsater & E.Santiago and The AMO Herbario Website

Common Name The Narrow Epidendrum

Flower Size

Found in southern Colombia, Ecuador and southern Peru on the Amazon slope of the Cordillera Oriental at elevations of 600 to 1100 meters as a miniature to small sized, warm t ocool growing epiphyte with simple, cane-like, terete, slightly flexuous stems carrying 3 to 11, all along the stems, ascendent, narrowly oblanceolate, apex rounded, smooth, sub-coriaceous, canaliculated, light green leaves that blooms in the winter, spring, summer on a terminal, arising on a mature stem, sessile, subcorymbose, occuring only once, simultaneously 3 to 4 flowered inflorescence with much shorter than the ovary, triangular, acute, amplexicaul floral bracts and carrying resupinate, pale green, fragrant flowers.

"Epidendrum angustatum belongs to the GROUP Difforme which is characterized by the caespitose, sympodial plants, fleshy light green to glaucous leaves, apical inflorescence without the spathaceous bract, sessile, rarely with a short peduncle, one-flowered to corymbose, fleshy, and flowers green to yellowish-green, rarely white. The species is recognized by the terete stems, leaves ascendant, narrowly oblanceolate, .16 to .4" [0.4 to 1.0 cm] wide, canaliculate, sub-coriaceous, the inflorescence with 3 to 4, pale green flowers, sepals and petals .4 to .56" [10 to 14 mm] long, lip reniform, retuse to acute, margin entire, calli conical, somewhat divergent, column straight to slightly arched with the clinandrium-hood dentate. Other species which have narrow, oblong leaves include Epidendrum chanchamayodifforme Hágsater & L.Sánchez, endemic to Peru, has short plants, 2.4 to 3.2" [6 to 8 cm] tall, leaves .02 to .028" [.5 to 0.7 mm] wide, flat, ancipitose stems, a single flowered inflorescence, lip 3-lobed, calli sub-globose, disc with 3 ribs that reach the middle of the lip. Epidendrum linearidifforme Hágsater & L.Sánchez is known from Surinam and the French Guyana, plants are 2.8 to 3.6" [7 to 9 cm] tall, leaves .016 to .024" [0.4 to 0.6 mm] wide, flat, inflorescence is single flowered, lip 3-lobed, calli sub-globose. Epidendrum schistostemum Hágsater, S.Laube & L.Sánchez is endemic to Panama, plants are 2.8 to 3.6" [7 to 9 cm] tall, leaves .012 to .02" [0.3 to 0.5mm] wide, inflorescence single flowered, flowers small, sepals .334 to .36" [8.4 to 9.0 mm] long, lip cordiform, calli small, sub-globose, column has prominent lateral wings, separated from the lip by deep basal sinuses." Hagsater etal 2015


References W3 Tropicos, Kew Monocot list , IPNI ; Icones Orchidacearum 3 Plate 346 Hagsater & Sanchez 1999 see recognition section; Icones Orchidacearum 15[1] Plate 1502 Hagsater & Santiago 2015 drawing/photo fide; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017 photo fide; Icones Orchidacearum 17(1) Plate 1723 Hagsater & Jimenez 2019 see recognition section