Epidendrum ulcumanoae Hagsater, G Gerlach & L Valenz. 2020 GROUP Arbuscula SUBGROUP Incomptum

TYPE Drawing

LCDP photo by © G. Gerlach & A. Cisneros and Icones Orchidacearum 18(1) plate 1844 2020

Common Name The Ulcomano Lodge Epidendrum [refers to a lodge that is named after the Ulcomano tree Retrophyllum rospigliosii naative to the montane forests of the Andes]

Flower Size .8" [2 cm]

Found in Pasco department of Peru in open places and roadsides at elevations of 2200 to 2350 meters as a medium to giant sized, cold, scandent growing terrestrial with erect, simple, cane-like, thin, terete, produced from a middle internode of the previous stem carrying 2 to 5, aggregate towards the apical 1/4 of each stem, recurved, alternate, base embracing the stem; sheaths tubular, striated; blades oblong to elliptic, the lowest one much smaller, acute, sub-coriaceous, green, concolor leaves that blooms in the winter on a terminal, without a spathe, peduncle .68 to 96" [1.7 to 2.4 cm] long, rachis .92 to 3.2" [2.3 to 8.0 cm] long, arching, nutant, racemose, densely successive till all are open together, 7 to 20 flowered inflorescence with triangular, acute, wmbracing, shorter than the ovary floral bracts and carrying resupinate flowers.

"Epidendrum ulcumanoae belongs to the GROUP Arbuscula SUBGROUP Incomptum which is characterized by the successive lateral growths produced from the middle of the previous growth, the few leaves aggregate towards the apex of the stems, a short apical inflorescence with fleshy green to violet-green flowers with short ovaries, and the lip entire to 3-lobed. The species discussed here are peculiar in the recessed mid-lobe of the lip, which is surpassed by the lateral lobes of the lip at its apex. The species is recognized by the sepals and petals olive green to yellow tinged somewhat brown, lip and calli pale yellowish green, with long, apiculate sepals .72 to .76" x .24 to .36" [18 to 19 x 6.0 to 9.0 mm] long, falcate, oblanceolate petals .6 to .68" x .2" [15 to 17 x 5 mm], and the obreniform lip .56 x 1" [14 x 25 mm], widest at the middle, the lateral lobes semi-orbicular, with a slightly receded mid-lobe, itself formed by a pair of semi-orbicular lobules, the lip with the lateral margins revolute so as to appear apron-like in natural position. It is very similar to Epidendrum rimarachinii Hágsater which has sepals about half as wide as they are long, .52 to .6" x .24 to .36" [13 to 15 x 6 to 9 mm], petals oblanceolate, 3-veined, .52 to .6" x .12 to .16" [13 to 15 x 3 to 4 mm], and a lip .52 to .6" x .88 to .92" [13 to 15 x 22 to 23 mm], 3-lobed, obreniform in general outline, lateral margins strongly revolute in natural position, base cordate, bicallose, lateral lobes .36 x .66" [9 x 16.5 mm], transversely obovate, wider towards the apex; mid-lobe .1 x .26" [2.5 x 6.5 mm], receded, formed by two small, semi-orbicular lobes, with a deep sinus in the middle. Epidendrum posticorevolutum Hágsater, A.Cisneros & Edquén is similar in having a receded mid-lobe of the lip but the flowers are smaller, green with a dark brown lip, sepals .6 x .32" [15 x 0.8 mm], petals .52 x .16" [13 x 4 mm], oblanceolate, with apex obtuse, and lip .52 x 1.08" [13 x 27 mm], widest towards the apex. Epidendrum chisquillense Hágsater, Edquén & Cisneros is similar but has smaller plants, flowers green concolor, sepals 3- vained, .66 to .676" [16.5 to 16.9 mm] long, with narrower petals .146" [3.6 mm] wide, a smaller lip, about .38 x .746" [9.5 x 18.6 mm], 2-lobed." Hagsater & Santiago 2020


References W3 Tropicos, Kew Monocot list , IPNI ; Icones Orchidacearum 18(1) plate 1806 2020 see recognition section; Icones Orchidacearum 18(1) plate 1832 Hagsater, Santiago and Medina 2020 see recognition section * Icones Orchidacearum 18(1) plate 1844 Hagsater & Santiago 2020 TYPE LCDP photo/photo fide;