Epidendrum coilotrienum Hágsater & L.Sánchez 2018 GROUP Mancum SUBGROUP Mancum

TYPE drawing by R. Jiménez M. © courtesy of Eric Hagsater and Icones Orchidacearum 16(1): t. 1611 Hagsater etal 2018

Part Shade Cold Summer

Common Name The Concave Trident Epidendrum [refers to the peculiar position of the 3-lobed lip where the lateral lobes are somewhat involute giving the lip a concave appearance]

Flower Size .4" [1 cm]

Found Pasco province of Peru on the eastern slope of the Cordillera Oriental of the Andes in sclerophyllous primary forest in wetland at elevations around 2750 meters as a medium sized, cold growing, sympodial epiphyte with cane-like, the new stem produced from the lower nodes of the previous stem, erect, straight, laterally compressed towards the ape stems with the base covered by 1 to 2 non-foliar sheaths, scarious, equal to the foliar sheaths carrying 2 to 4 per stem, distributed along the apical half of the stem, sheaths tubular, striated and minutely rugose, blade articulate, oblong-lanceolate, apex obtuse, aristate, coriaceous, margin entire leaves that blooms in the summer on a terminal, peduncle 2.52" [6.3 cm] long, nearly totally covered by the spathe elongate, narrowly pyramidal, racemose, erect, elongate, 11.72" [28.8 cm] long overall, rachis straight, densely, simultaneously about 45 flowered inflorescence with , much shorter than the ovary, triangular, acute, clasping floral bracts and carrying non-resupinate, fragrance not registered flowers with the sepals greenish red, petals and column yellowish and the lip white with purple dots.

"Epidendrum coilotrienum belongs to the GROUP Mancum which is characterized by the sympodial habit, few-leaved stems, racemose inflorescence with 1 to 2 ancipitose, long, spathaceous bracts with parallel sides, and SUBGROUP Mancum which has nonresupinate flowers, and a generally reduced, fleshy lip. The species is recognized by the laterally compressed stems, shorter narrower leaves 2.4 to 3.68"x .32 to .52" [6.0 to 9.2 x 0.8 to 1.3 cm], elongate, narrowly pyramidal inflorescence, the 3-lobed, ecallose lip with a short, fleshy rib at the base of the mid-lobe, lateral lobes triangular, acute, the apices even with the apex of the sub-rectangular, apiculate mid-lobe. It is very similar to Epidendrum rhombimancum from southern Ecuador and northern Peru (Amazonas), which has longer, wider leaves 3.6 to 4.8" x -96 to 1.2" [9 to 12 x 2.4 to 3.0 cm], conical, densely flowered inflorescence, petals obovate with the margin undulate towards the apex, lip entire, transversely elliptic. Epidendrum mancum Lindl. from southern Ecuador has shorter plants, 6 to 10" [15 to 25 cm] tall, smaller leaves .8 to 2.4" x .52 to 1.08" [2 to 6 x 1.3 to 2.7 cm], conical inflorescence, sepals and petals wider .12 to .2" [3 to 5 mm] wide, and the lip entire. Epidendrum pseudosarcoglottis Hágsater & Dodson has a conical inflorescence, spatulate petals, entire lip claw-like, rectangular with a wide, fleshy callus. Epidendrum sarcoglottis Schltr. from Colombia and Ecuador has a conical inflorescence, larger flowers, sepals and petals .32 to .36" [8 to 9 mm] long, entire, claw-like lip, triangular, the callus forming a wide, fleshy cushion." Hagsater etal 2018


References W3 Tropicos, Kew Monocot list , IPNI ; *Icones Orchidacearum 16(1): t. 1611 Hagsater etal 2018 drawing/photo fide;