Epidendrum yacuriense Hágsater et H.Medina 2020 GROUP Kalopternix

TYPE Photo

TYPE LCDP Photo by H. Medina/ TYPE photo by Eric Hagsater and The AMO Herbario Website

Common Name The Yacuri Epidendrum [In reference to the Parque Nacional Yacuri located on the border between Ecuador and Peru on the Cordillera Occidental, and where the species has been collected on several occasions]

Flower Size .52" [1.3 cm]

Found in Loja province of Ecuador and Peru near the summit of the Cordillera Occidental on the western, dry side in sub-paramo montane on small trees of Myrcianthes sp. and Clusia sp. at elevations of 2900 to 3400 meters as a mini-miniature sized, cold growing epiphyte with thickened into an ovoid pseudobulb, short, dark green, covered by non-foliar, somewhat striated when dry sheaths . and carrying a single lanceolate, acute, fleshy, coriaceous, smooth, dark green, margin entire, spreading leaf that blooms in the Flowering from late fall, winter, and earlier spring on a terminal, sessile, peduncle terete, thin, short, somewhat covered by 4 basal, widely ovate, acuminate, embracing bracts, sub-umbellate, racemose, much shorter than the leaf successively few, eventually all open at once, to 6 flowered inflorescence with gradually shorter than the ovary, triangular-lanceolate, acuminate floral bracts carrying non-resupinate, wine red flowers with the margins and apex of sepals sometimes pale green, column green to wine-red, base of lip pale; without fragrance.

"Epidendrum yacuriense belongs to the GROUP Kalopternix SUBGROUP Serpens, characterized by the aggregate, globose pseudobulbs with fleshy-coriaceous leaves, a sessile inflorescence, one or few fleshy, compact, star-shaped flowers, often burgundy red in color, and the lip entire, more or less cordiform. The species is recognized by the single leaved pseudobulb, sub-umbellate sub-sessile inflorescence of up to 6 wine-red flowers, non-resupinate, sepals .252" to .268" [6.3 to 6.7 mm] long , petals oblong-lanceolate, acute, and the lip widely cordiform, base cordate, apex short apiculate, somewhat concave in natural position, margin dentate, especially towards the sides, ecallose. Epidendrum pachycoleum Hágsater, O.Pérez & E.Santiago has an erect plant, 1 to 2 leaved, aggregate, homoblastic pseudobulbs, elliptic leaves, the apical one often much reduced, sessile flowers produced in succession, sometimes 2 open at one time, and sepals .28 to .292" [7.0 to 7.3 mm] long. Epidendrum serpens Lindl. also has an erect plant, but 2 to 3 leaves per pseudobulb, leaves ovate-lanceolate, linear-lanceolate petals, and the lip subrounded-ovate. Epidendrum platyphylloserpens Hágsater, from Ecuador, has pendent leaf, oblong-elliptic, acute, up to 9 flowers opening in succession, several open at one time, and the sepals are 5-veined, .34" [8.5 mm] long. Epidendrum breviyacuriense Hágsater, H.Medina & J.Duarte has wine-red globose pseudobulbs, ovate leaves .52 to .76" .24 to .28" [1.3 to 1.9 x 0.6 to 0.7 cm], wine-red towards the margins, resupinate, reddish violet flowers, and the lip with a narrow mid-rib running down to the middle of the disc." Hagsater etal 2020


References W3 Tropicos, Kew Monocot list , IPNI ; * Icones Orchidacearum 17(1) Plate 1800 Hagsater & Jimenez 2019 TYPE drawing/photo;