Epidendrum nanoecallosum Hágsater & E.Santiago 2009 GROUP Nanum SUBGROUP Nanoecallosum

TYPE Drawing by © Jimenez and The AMO Herbaria Website

Common Name The Dwarf Without a Callous Epidendrum

Flower Size .6” [1.5 cm]

Found in southern Colombia near the Ecuadorian border at elevations around 3000 meters as a mini-miniature sized, cold growing, subcaespitose, pendent epiphyte with cane-like, short, arising from the basal internodes of the previous stem, terete, pendent, straight to slightly arching stems enveloped basally by tubular, non foliar, infundibular sheaths and carrying 7, along the apical half of the stem, alternate, articulate, somewhat succulent, narrowly lanceolate, acute, apically minutely erose margin leaves that blooms on a terminal, racemose, short, peduncle short, laterally compressed, slightly ancipitous, simultaneously 8 to 9 flowered inflorescence with much shorter than the ovary, narrowly lanceolate, acute, amplexicaul floral bracts and carrying in opposite pairs, non-resupinate, reddish white flowers.

"Epidendrum nanoecallosum belongs to the GROUP Nanum , which is characterized by the Dichaea-like pendent stems, the inflorescence produced by pairs of opposite flowers, without spathaceous bracts, but with prominent floral bracts, and the SUBGROUP Nanoecallosumwhich has an ecallose, entire lip.The species is recognized by the short, pendent, branching habit, 8 to 9 small flowers, the sepals.24 to .26" [6 to 6.5 mm] long, an elliptic, ecallose, entire lip, and a very prominent, fleshy, entire, clinandrium-hood. Epidendrum nanodentatum has two, opposite, non-resupinate, pinkish colored flowers, a triangular, ecallose lip, and the short, lanceolate, acute petals, with an acute tooth on either side of the apex of the column. Epidendrum renzii Garay & Dunst., has longer stems, 4, pale green with wine-red lip flowers in two opposite pairs, a prominent vesicle on the underside of the ovary, resupinate flowers, oblong to oblanceolate petals. Epidendrum nanosimplex Hágsater & Dodson is also similar, but has 6 to 7, resupinate, pale green and white flowers in opposite pairs, shorter sepals .16 to .24" [4 to 6 mm] long, cry2goat narrowly oblanceolate petals, a truncate column, and the triangular, ovate lip with a pair of prominent globose calli." Hagsater etal 2009


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 12 Plate 1267 Hagsater & Santiago 2009 drawing fide; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017; Icones Orchidacearum 17(2) Plate 1794 Hagsater & Jimenez 2020 see recognition section;