Epidendrum yanachagaense Hágsater 2010 GROUP Andean SUBGROUP Soratae

TYPE Drawing by © Jimenez and The AMO Herbaria Website

Common Name The Yanachanga Epidendrum [A national park in southern Peru]

Flower Size .6" [1.5 cm]

Found in central Peru on the eastern slopes of the Andes in wet montane forests at elevations of 3390 to 3420 meters as a small sized, cold growing epiphyte with cane-like, branching, branches progressively shorter above, basally terete, laterally compressed above stems carrying 3 to 7 on the upper stems, sub-coriaceous, alternate, articulate, elliptic-ovate, obtuse, minutely apiculate, margin entire leaves that blooms in the summer on a terminal, without a spathe, racemose, occuring only once, peduncle laterally compressed, thin, .4 to .8" [1 to 2 cm] long, with 1 narrowly triangular, acuminate bract, successively some, 8 to 10 flowered inflorescence with much shorter than the ovary, triangular-lanceolate, acuminate, clasping floral bracts and carrying resupinate, green flowers without fragrance data.

"Epidendrum yanachagaënse belongs to the GROUP Andean SUBGROUP Soratae which is characterized by the branching habit starting on a monopodial, primary stem, infundibuliform, rugose leaf-sheaths, lanceolate, aristate, acute leaves, racemose sub-capitate inflorescence on a short, thin peduncle, and the bicallose lip. The species is recognized by the small plants with very short branches, leaves elliptic-ovate, .32 to 1.6" x .36 to .52" [0.8 to 4.0 x 0.9 to 1.3 cm], green flowers, sepals .6 to .64" [15 to 16 mm] long, wide and falcate, the petals are oblanceolate, falcate, wide and 3-veined, and a suborbicular lip slightly cordate at the base, the margin crenate. Epidendrum soratae Rchb.f. has taller plants, 8.8 to 10.8" [22 to 27 cm] tall, lanceolate leaves .68 to 1.88" [1.7 to 4.7 cm] long, 8 to 12 yellowish green flowers, sepals .268 to .28" [6.7 to 7 mm] long, and a reniform lip, the base deeply cordate, the margin entire. Epidendrum obliquum Schltr. has plants up to 22.8" [57 cm] tall, lanceolate leaves .8 to 1.6" [2 to 4 cm] long, and a reniform lip with entire margin, the column straight and the ovary is not inflated." Hagsater etal 2010


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 13 Plate 1400 Hagsater 2010 drawing fide; Icones Orchidacearum 14 Plate 1451 Hagsater & Sanchez 2013 see recognition section; Icones Orchidacearum 16[2] Plate 1679 Hagsater & Sanchez 2018 see recognition section;