Epidendrum pachydiscum Hágsater 2004 GROUP Rupestre

TYPE Drawing by © Jimenez and The AMO Herbaria Website

Common Name The Thick Disc Epidendrum

Flower Size .6” [1.5 cm]

Found in northern Peru along dry quebradas at elevations around 2800 meters as a miniature sized, cold growing sympodial epiphyte with simple, forming a short, fusiform pseudobulb carrying 2 one apical, a smaller one arising from a foliaceous sheath and carrying, articulate, suberect, narrowly elliptic, acute, low dorsal keel, coriaceous, margin entire leaves that blooms in the winter on a terminal, raacemose, erect, peduncle short, thin, laterally compressed, provided with a median narrowly triangular, acute bract, densely, mostly simultaneously 30 to 38 flowered inflorescence with half the length of the ovary, triangular, acute floral bracts and carrying resupinate, yellow flower with a darker yellow lip.

"Epidendrum pachydiscum belongs to the GROUP Rupestre which is characterized by the caespitose, sympodial plant, the pseudobulbous stems with 1 to 4 fully developed leaves toward the apex, and lack of spathes at the base of an erect, racemose or paniculate inflorescence, the lip ecallose but with several f1eshy thickened keels on the disc. The species is recognized by the elliptic leaves .28 to .52" [7 to 12 mm] wide, the erect, many-flowered raceme of small flowers with sepals .212 to 2.32" [5.3 to 5.8 mm] long, and the deeply 3-lobed lip, ecallose with a fleshy, 3- keeled disc, and the midlobe bilobed, the outer sides curved outwards and entire, the inner sides dentate to short fimbriate, the lobes about as long as they are wide. Epidendrum rupestre has a loosely racemose inflorescence, larger flowers with the sepals .28" [7 mm] long, and the midlobe of the lip subquadrate, rounded and broader than long." Hagsater etal 2004


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 7 Plate 773 Hagsater 2004 drawing fide; Icones Orchidacearum 9 Plate 956 Hagsater 2007 see recognition section; Icones Orchidacearum 15 [1] Plate 1525 Hagsater & Sanchez 2015 see recognition section; Icones Orchidacearum 15 [1] Plate 1546 Hagsater & Sanchez 2015 see recognition section; Icones Orchidacearum 15 [2] Plate 1570 Hagsater & Sanchez 2016 see recognition section;