Epidendrum yumboense Hágsater, O.Pérez & E.Santiago 2013 GROUP Diothonea SUBGROUP Diothonea

TYPE Drawing

TYPE Photo/TYPE Drawing by © Jimenez and The AMO Herbaria Website


Common Name The Yumbo Epidendrum [A town in Cauca department of Colombia where the type was collected]

Flower Size .6" [1.5 cm]

Found in southern Colombia on the western Cordillera on the Pacific slope of the Andes in cloud forests at elevations of 2000 to 2300 meters as a small to medium sized, cold growing epiphyte with terete, cane-like, thin, erect, straight, new stems branching from the sub-apical node of the previous stems carrying 6 to 7, all along the upper half of the stem, alternate, articulate, coriaceous, green with the margin tinged purple, oblong-lanceolate, truncate, bilobed, minutely aristate, margin entire leaves that blooms in the summer through fall on a terminal, without a spathe, racemose, arching-nutant, peduncle .28" [7 mm] long, rachis very short, densely simultaneously 9 flowered inflorescence with much shorter than the ovary, triangular-lanceolate, acuminate floral bracts and carrying small, resupinate, fleshy, glabrous, pustulate at the upper ends of the perianth elements, pale pink to yellow flowers with the disc orange-yellow and without fragrance data.

"Epidendrum yumboënse 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, the lip entire to 3-lobed, with an erose margin, ecallose, with or with out with 1 to 10 thin, smooth to erose keels, the column united to the lip from totally to obliquely to free. The species is recognized by the oblong-lanceolate leaves, .44 to 1.6" [1.1 to 4 cm] long, ovary ventrally inflated along the apical 2/3, forming an obvious elongate vesicle, sparsely pustulate, inflorescence with some 9, pale pink to yellow flowers, the disc orange-yellow, sepals .2 to .24" [5 to 6 mm] long, ovate-orbicular to obovate, oblique, petals ovate, wide, ca. .2 x .12" [5 x 3 mm], the lip entire, widely reniform-pentagonal, shallowly emarginate with 3 smooth keels, fused at the base, and extending to the apex. Epidendrum podocarpophilum Schltr. has pale orange flowers, the ovary is not inflated, oblong-elliptic sepals, obovate-spatulate petals and a 3-lobed lip has 3 short, rounded keels. Epidendrum caesaris Hágsater & E.Santiago has oblong-lanceolate leaves 1.52 to 3.4" [3.8 to 8.5 cm] long, inflorescence with 4 to 19 pale pink, translucent-colored flowers, ovary slightly inflated, sepals widely elliptical, .32 to .34" [8 to 8.5 mm] long, petals narrowly ovate, .28 x .0836" [7 x 2.9 mm], and a cordiform lip with 3 to 5 smooth keels than only reach the middle of the lip, and a strongly arched column. Epidendrum restrepoanum A.D.Hawkes has carmine-red flowers, the ovary is not inflated, sepals are elliptic-obovate, .24 to .36" [6 to 9 mm] long, petals narrowly elliptic, margin slightly erose, .272" [6.8 to 7.5 mm] long." Hagsater etal 2013


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 14 Plate 1499 Hagsater, Perez & Santiago 2013 drawing fide; Orchids of the Department of Valle De Cauca Colombia Vol 2 Kolanowska, Hagsater etal. 2014 drawing/photo fide; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017 photo fide; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017 as E aff yumboense photo good;