Epidendrum rugosum Ames 1923 GROUP Ramosum SUBGROUP Rugosum TYPE Drawing by R Jimenez and The AMO Herbaria Website

Part Shade Warm ColdLATER Summer Summer EARLIERFall

Common Name The Rugose Epidendrum [refers to the foliar sheaths]

Flower Size .4" [1 cm]

Found in Costa Rica on the Atlantic Slope and on the Cordillera de Tileran, Central and Talamanca in cloud and rain forests at elevations of 950 to 2500 meters as a small to medium sized, warm to cold growing epiphyte with cane-like, branching, terete, flexuous, branches shorter than the main stem carrying numerous, all along the main stem and branches, generally deciduous on the older stems persistent on the branches, 7 to 11 on the lower branches, 3 to 5 on the upper and flowering branches, oblong-elliptic, unequally bilobed, coriaceous leaves that blooms in the later spring, summer through earlier fall on a terminal, erect, only on the branches, distichous, racemose, peduncle reduced, terete, with 1 to 2, triangular, acute bracts rachis zigzag, simultaneously 4 to 6 flowered inflorescence with shorter than the ovary, triangular, acute floral bracts and carrying distichous, lip always facing the rachis, whitish, greenish white to green flowers.

The zigzag rachis, as long as the ovary, triangular floral bracts and the 3 to 4 flowers with extended segments and a triangular, acuminate lip with the basal angles rounded distinguish this species.


References W3 Tropicos, Kew Monocot list , IPNI The Genus Epidendrum Ames 1936; Field Guide to the Orchids of Costa Rica and Panama Dressler 1993; Manual de las Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003 drawing good; Icones Orchidacearum 9 Plate 981 Hagsater & Sanchez 2007 drawing fide