Epidendrum pustulosum Rinc.-González, García-Revelo & Hágsater 2018 GROUP Diothonea

TYPE Drawing

TYPE Photo by © J. S. García R. /Drawing © by R Jimenez and The AMO Herbario Website

Part shade Cold MID winter AND AGAIN LATESpring

Common Name The Shovel Shaped Lip Epidendrum

Flower Size 1.2" [3 cm]

Found in Tolima department of Colombia in the Páramo de La Yerbabuena at elevations around 3100 meters as a small sized, cold growing epiphyte with scarcely branching near the apex when mature, cane-like, terete, thin; the primary stem 6 to 7.4" [15 to 18.5 cm], the branches 1.84 to 2.4" [4.6 to 6.0 cm] long stems carrying 10 to 12 on the primary stem, 3 on the branches, sub-erect, alternate, articulate; tubular, striated, reddish green basal sheath, blade narrowly lanceolate, apex sub-acute, minutely apiculate, margin entire leaves that blooms in the mid winter and again late spring on a terminal, without a spathe, peduncle .02" [5 mm] long, terete; rachis .56 to .96" x .04 to .06" [14-24 x 1.0 to 1.5 mm], terete, 1 to 1.28" [2.5 to 3.2 cm] long, apical, racemose, arching-nutant, opening in succession, but eventually all open at one time, 6 to 10 flowered inflorescence with half as long as the ovary, narrowly triangular, acuminate floral bracts and carrying resupinate, flowers with the sepals and petals yellow, the lip and column green and the fragrance not registered.

"Epidendrum pustulosum belongs to the GROUP Diothonea characterized by the branching habit, linear-lanceolate to lanceolate leaves, the apex usually narrowly bilobed, arching-nutant, racemose inflorescence, membranaceous or rarely fleshy flowers, the lip entire to 3-lobed, with an erose margin, ecallose, without or with 1 to 10 thin, glabrous to erose keels, the column variously united to the lip from totally, to obliquely, to totally free. Epidendrum pustulosum is recognized by the monopodial, mature plants scarcely branching, with yellow and green flowers, sepals dorsally pustulate, lip 3-lobed, margin slightly revolute, column slightly arched and the apex forming a wide aperture. It is very similar to Epidendrum litteraënse but that species has very much branched stems, flowers green marked with reddish brown, and the apex of the column forming a very narrow vertical slit, as an entrance to the nectary. Epidendrum aureoglobiflorum Hágsater & Dodson has yellowish brown flowers, sepals dorsally ornate with prominent, spaced warts; lip entire, and the inflorescence is very short and dense (1 cm long). Epidendrum gratissimum (Rchb.f.) Hágsater & Dodson has flowers varying in color from pink to yellow, the sepals dorsally glabrous, lip 3-lobed, with the mid-lobe itself bilobed, column with a pair of prominent, involute wings. Epidendrum tropinectarium Hágsater & E.Santiago has pink colored flowers, sepals glabrous, column arched upwards, petals linear, acute." Hagsater 2018


ReferencesW3 Tropicos, Kew Monocot list , IPNI ; *Icones Orchidacearum 16[1] Plate 1651 Hagsater & Sanchez 2018 drawing/photo fide;