Epidendrum grammipetalostachyum Hágsater et E.Santiago 2013 GROUP Macrostachyum SUBGROUP Macrostachyum

TYPE Drawing

Photo by © Hagsater/TYPE Drawing by Jimenez Hágsater & E.Santiago and The AMO Herbario Website

Part Shade Cool Cold Winter Spring

Common Name or Meaning The Erect Inflorescence with Linear Petal Epidendrum

Flower Size .8" [2 cm]

Found in Valle de Cauca department of Colombia on the Pacific slope of the cordillera Occidental in wet and dense cloud forests at elevations around 1200 to 2000 meters as a medium to giant sized, cool to just cold growing terrestrial with cane-like, terete, thin, erect, straight stems carrying all along the stem, 14 to 20 on the main stem, 8 to 9 on the branches, articulate, alternate, subcoriaceous, unequal in size, narrowly elliptic, acuminate leaves that blooms in the winter through spring on a terminal, occuring only once, on both the main stem and branches, racemose, erect, 2.6 to 5.2" [7 to 13 cm] long including the .2 to .4" [5 to 10 mm] long, terete, thin, straight peduncle, rachis, terete, thin, cylindrical, simultaneously 12 to 24 flowered inflorescence with as long as the ovary, prominent, triangular, ovate, acuminate, amplexicaul floral bracts and carrying non-resupinate flowers.

"Epidendrum grammipetalostachyum belongs to the GROUP Macrostachyum SUBGROUP Macrostachyum, which is characterized by the monopodial plants with sub-apical branching, rugose leaf sheaths, racemose inflorescence, and fleshy flowers with a simple, conduplicate lip embracing the column, and the nectary pubescent to papillose in front of the stigmatic cavity. The species is recognized by the relatively small, acuminate leaves, the lax, few-flowered inflorescence, with simultaneous yellowish green flowers, the floral bracts about as long as the ovary, the narrow, linear, acute petals and the deltate lip, base truncate. Epidendrum chondrochilum known from Antioquia and Boyacá to Nariño and Putumayo has a lax-flowered inflorescence which produces many flowers in a long succession, with about a dozen open at one time, burgundy-brown flowers, larger leaves on the main stem, obtuse, 5 to 5.2" x 1.2 to 1.4" [12.5 to 13 x 3 to 3.5 cm], floral bracts about up to twice the length of the ovary, petals linear-oblong, sub-obtuse, and the lip widely cordiform, the base slightly cordate. Epidendrum polyanthostachyum Hágsater & E.Santiago has acute leaves, a many-flowered compact inflorescence with simultaneous flowers, sepals .4" [10 mm<} long, petals oblong oblanceolate, convex, lip widely deltate, and the anther with rostrum at the apex. Epidendrum platystachyum Hágsater is much smaller overall and has elliptic-oblong, rounded leaves less than .48" [1.2 cm] wide, the inflorescence short and compact, rachis sinuous, with successive, ochre flowers, the wide floral bracts, embracing the short ovary and flower, and oblanceolate petals." Hagsater etal 2013

References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 14 Plate 1433 Hagsater 2013 drawing fide; Icones Orchidacearum 14 Plate 1477 Hagsater & Sanchez 2013 see recognition section; Orchids of the Department of Valle De Cauca Colombia Vol 2 Kolanowska, Hagsater etal. 2014 drawing/photo fide; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017 photo fide

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