Epidendrum paniculorotundifolium Hágsater, Kolan. & E.Santiago 2013 GROUP Pseudepidendrum SUBGROUP Paniculatum

TYPE Drawing

TYPE Photo by © M Kolanowska/TYPE Drawing by © Jimenez and The AMO Herbaria Website

Common Name The Rounded Leaf Apex E paniculatum Epidendrum [refers to the shape of the leaf apex]

Flower Size .8” [2 cm]

Found in southern Colombia on the Cordillera Occidental at elevations around 1900 meters as a small sized, cool growing sympodial epiphyte with simple, cane-like, terete, erect, straight stems and carrying 7 to 12, all along the apical half of the stem, alternate, articulate, erect-spreading, amplexicaul, orbicular-elliptic, obtuse, margin entire leaves that blooms in the fall through winter on a terminal, without a spathe, occuring only once, erect, straight, peduncle 1” [2.5 cm] long, short, erect, straight; rachis 2.8 to 4.2” [7 to 10.5 cm] long, with 5 spreading, paniculate lax, few-flowered racemes, each raceme subtended by a narrowly triangular, acuminate, amplexicaul, basal bract, 9.6 to 10.4” [24 to 26 cm] long, simultaneously 45 to 60 flowered inflorescence with shorter tha the ovary, linear-triangular, acuminate, amplexicaul floral bracts and carrying resupinate flowers with the basal half of the sepals and petals and the column green, the apical half of the column and the lip are white turning yellowish with age.

"Epidendrum paniculorotundifolium belongs to the GROUP Pseudepidendrum which is characterized by caespitose plants, cane-like stems, acute to acuminate leaves, usually apical inflorescence, the mostly filiform petals and the lip usually 3-lobed with 3 parallel fleshy keels, the apical lobe often bifurcate, the “bird-wing” type pollinia, at least the inner pair, and SUBGROUP Paniculatum , which has filiform petals, all pollinia “bird-wing” type, green and white flowers, often marked with purple on the disc of the lip and apex of the column. The species is recognized by the intermediate sized plants, the orbicular-elliptic leaves, about 1:0.6 (length/width), the paniculate inflorescence, .48 to .6" [12 to 15 mm] long sepals, 5-veined, the mid-lobe of the lip bifid, with the lobes slightly divaricate, with the width between the tips greater than between the edges of the lateral lobes, the flowers green with the column and the lip white. Epidendrum paniculatum has elliptic leaves, the lip marked with reddish-purple, the lateral lobes of the lip sub-orbicular and the midlobe bilobed, formed by a pair of strongly divaricate, falcate lobes, and is endemic to northwestern Peru. Epidendrum weerakitianum Hágsater, O.Pérez & E.Santiago, has elliptic leaves; sepals 3-veined, the lip with 5 ribs on the disc which is clearly marked with purple turning reddish-purple with age. Epidendrum kolanowskae Hágsater, O.Pérez & E.Santiago, has orbicular-elliptic to elliptic leaves, sepals 5-veined, .53" [13 mm] long, the lip has a 3 ribbed disc which is scarcely marked reddish-purple. Epidendrum paniculourubambense Hágsater & E.Santiago has much taller plants, to 40 to 100" [1 to 2.5 meters] tall, larger, narrowly elliptic leaves, 3.4 to 5.6" [8.5 to 14 cm] long; the lip is wider between the lobes of the mid-lobe than between the semicircular lateral lobes. Epidendrum paniculolateribilobum Hágsater, Ric.Fernández & E.Santiago also has taller plants, to 100" [2.5 meters] tall, elliptic leaves 3.2 to 5,6" [8 to 14 cm] long, .44" [11 mm] long sepals, and an immaculate lip with bilobed lateral lobes." Hagsater etal 2013


References W3 Tropicos, Kew Monocot list , IPNI ; Icones Orchidacearum 14 Plate 1447 Hagsater & Santiago 2013 See recognition section; * Icones Orchidacearum 14 Plate 1469 Hagsater 2013 drawing/photo fide; Icones Orchidacearum 14 Plate 1495 Hagsater & Santiago 2013 See recognition section; Orchids of the Department of Valle De Cauca Colombia Vol 2 Kolanowska, Hagsater etal. 2014 drawing fide; Orquideas, Tesoro de Colombia Vol 2 Ortiz & Uribe 2017 photo fide;