Epidendrum pumilum Rolfe 1893 GROUP Oerstedella SUBGROUP Verrucosum Photo by Andy's Orchids Copyright © 2002 All rights reserved.

Plant and Flowers Photo by © Daniel Jimenez

to Ocassional

Common Name The Dwarf Epidendrum [refers to the size of the described plant]

Flower Size 1/4" [6 mm]

Found in Costa Rica and Panama in lower montane cloud forests as a miniature to medium sized, cool to cold growing epiphyte at elevations of 1600 to 2650 that has erect to slightly arching, simple, cane-like, cylindric, terete, thin stems enveloped basally by verrucose leafless sheaths and carrying several, distichous, subcoriaceous, broadly elliptic-ovate, subcordate at the base, retuse apically leaves with a terminal, 3/4 to 2 3/4" [2 to 7 cm] long, racemose inflorescence subtended by triangular bracts occuring in the fall and occasionally in the summer with simultaneous to successive opening flowers.

"The species is distinguished by the greenish yellow flowers with the sepals frequently purple-brown dorsally, the lip with a few purple spots, sepals .2 to .28" [5 to 7 mm] long, the apex of the column 3-lobed, surpassing the body of the column and the callus is tridentate. Epidendrum endresii Rchb J. has white flowers, the lip more or less colored with lilac, the flowers somewhat largerwith the sepals .3 to .4" [7.5 to .10 mm] long, the apex of the column 4-lobed and the ilp bicallose. NOTE: We consider E. adophii Schltr. synonymous with E. endresii, though Schlechter himself confused his E. adolphii with E. pumilum Rolfe, (Repert. Spec. Nov. Regnl Veg. Belh. 19: 125 and 217. 1923.) As wlth several other species of the Oerstedella Group, E. pumium has two color forms, the light colored greenish yellow form, and the darker form, with the dorsal surface of the sepals purple-brown." Hagsater 2006

Synonyms Epidendrum acrochordonium Schlechter 1918; Oerstedella acrochordonia (Schltr.) Hágsater 1981; Oerstedella pumila (Rolfe) Hágsater 1981

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; Repert. Sp. Nov. Regni. Veg. Beih. 19: 33. Costa Rica Schlechter 1923 as E acrochordonium; Repert. Sp. Nov. Regni. Veg. Beih. 19: 115. Costa Rica Schlechter 1923 as E acrochordonium; Repert. Sp. Nov. Regni. Veg. Beih. 19: 125. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 217. Costa Rica Schlechter 1923; The Genus Epidendrum Ames 1936; Ceiba Vol 5 No 1 L O Williams 1956; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 as Oerstedella pumila photo fide; Icones Planetarum Tropicarum plate 1462 Atwood 1992 as Oerstedella pumila drawing fide; Guide to the Orchids of Costa Rica and Panama Dressler 1993 as Oerstedella pumila; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003 as Oerstedella pumila; Icones Orchidacearum 8 Plate 880 Hagsater 2006; Icones Orchidacearum 9 Plate 942 Hagsater 2007 see recognition section; Orchid Digest Vol 74 #2 2010 photo fide;