Epidendrum quadrangulatum A.D.Hawkes 1957 GROUP Andean SUBGROUP Orgyale

TYPE Drawing by © M Lopez R and The AMO Herbaria Website


Common Name The Square Epidendrum [refers to the lip apex shape]

Flower Size 1.2” [3 cm]

Found in southern Colombia and Ecuador at elevations around 2400 to 3100 meters as a small to just medium sized, cold growing epiphyte with cane-like, erect, straight, main stem branching subapically when mature stems carrying 7 or more all along the stems, articulate, distichous, coriaceous, somewhat spreading, ovate-oblong, obtuse leaves that blooms in the fall on a terminal, occurring only once, racemose, arching, peduncle short, straight, with a small deltoid, amplexicaul bract, densely, simultaneously 15 flowered inflorescence with shorter than the ovary, triangular-lanceolate, acuminate, amplexicaul floral bracts and carrying non-resupinate fleshy flowers without color or fragrance data.

"Epidendrum quadrangulatum belongs to the GROUP Andean SUBGROUP Orgyale which is characterized by the monopodial, sub-apical branching habit, erect to sub-erect inflorescences, lax, non-resupinate flowers, the lip entire. The species is recognized by the ovate-oblong leaves to .8" [2 cm] wide, slightly arching, densely many-flowered inflorescence, sepals .52 to .6" [13 to 15 mm] long, lip quadrate-sub-rounded, about .32 x .32" [8 x 8 mm], with thickened keels on the lip, the clinandrium-hood denticulate. Epidendrum panduratum Hágsater & Dodson has apparently shorter, ovate to elliptic leaves, a panduriforme lip (sub-quadrate in general outline), with a pair of small, incipient lateral lobes. Epidendrum chaoticum Hágsater & E. Santiago has somewhat larger flowers, sepals .8" [20 mm] long, the lateral sepals dorsally verrucose, and the lip sub-entire, with a pair of incipient lateral lobes." Hagsater etal2009

Synonyms Epidendrum quadratum Lindl. 1853

References W3 Tropicos, Kew Monocot list , IPNI ; Repert. Spec. Nov. Regni Veg. Beih. 7: 251 Schlechter 1920 as E quadratum; Icones Orchidacearum 4 Plate 449 Hagsater 2001 see recognition section; Icones Orchidacearum 12 Plate 1268 Hagsater 2009 see recognition section; Icones Orchidacearum 12 Plate 1281 Hagsater & Santiago 2009 drawing fide; Icones Orchidacearum 16[1} Plate 1645 Hagsater & Sanchez 2018 see recognition section