Epidendrum madsenii Hágsater & Dodson 1999 GROUP Nanum


Photos by Oliver Lenhard ©

TYPE Drawing

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

Part Sun Cool Springfall

Common Name Madsen's Epidendrum [Danish Collector of Species current]

Flower Size 1" [2.5 cm]

Found in Ecuador on the eastern slope of the Andes along rivers at elevations of 1100 to 2000 meters as a cool, pendant growing epiphyte with stout, laterally compressed canes arising from near the apex of the previous cane enveloped completely by basally clasping, leaf-bearing sheaths each carrying articulate, evanescent, ovate to ovate-lanceolate, acute, succulent leaves that blooms in the spring through fall on an apical, racemose, subcorymbose, 6 to 9 flowered inflorescence with simultaneously opening flowers.

"Epidendrum madsenii belongs to the GROUP Nanum characterized by the dichaea-like pendant stems with pairs of opposing flowers on an inflorescence without spathaceous bracts and has prominent floral bracts. The species is recognized by the prominent, very long swollen vesicle at the base of the ovary, nearly as long as the ovary itself, the pale green flowers, the prominent 3-lobed, erose clinandrium, the triangular, acute midlobe of the lip, and the ornamentation of the anther consisting of a transverse, dentate process in front. It closely resembles Epidendrum lueri Dodson & Hágsater, which has pinkish yellow flowers with a bright yellow lip, a denticulate clinandrium neither 3-lobed nor fimbriate. Epidendrum bonitense has a shorter nectary which is only half as long as the base of the ovary and does not form a vesicle, the clinandrium barely reaches the apex of the body of the column, and the sepals are 4 to 5 veined, the midlobe of the lip is short-subquadrate and obtuse. Epidendrum macasense Hágsater & Dodson is distinguished by its shorter, narrower leaves, the narrower petals, the unornamented anther, and the ovary which is not inflated or swollen into a vesicle. Epidendrum milenae Dodson & Vásquez has a purple anther and dentate, 3-lobed clinandrium, the lateral lobes of the lip being barely separated from the midlobe, the flowers smaller, sepals .14 to .16" [3.5 to 4 mm] long.' Hagsater etal 1999


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 3 Plate 351 Hagsater 1999 drawing fide; Icones Orchidacearum 3 Plate 388 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 400 Hagsater 1999 see recognition section; Icones Orchidacearum 4 Plate 448 Hagsater 2001 see recognition section;