Barkeria barkeriola Rchb. f.
Epidendrum barkeriola (1890)
An erect, slender, deciduous herb with an epiphytic habit (very rarely rupicolous) that grows between 10-45 cm. Roots: thin, terete, long, rarely branched, white in color with green tips. Stems: grayish-white, thickened, slightly compressed laterally, 4-16 cm. in length. Older stems are covered with scarious, papery bracts. Leaves: 4-5 lanceolate, acute to acuminate, distichous, coriaceous to subsucculent, present only on the newly developing growth and appressed to the stem via an articulated joint. Leaves are green but suffused with reddish-purple pigmentation, particularly on the margins and abaxial surface of the lamina. Inflorescence: terminal, erect, straight, unbranched raceme, from the new growth, on an elongated subterete, rather thin peduncle covered by tubular bracts (scarious at anthesis) 4-27 cm. in length with 2-10 flowers. Flowers: Small, attractive, resupinate, inodorous, 2.5-3.5 cm diameter spread, tepals pale lilac and lip white with the exception of a darker apical blotch of striking and saturated color intensity. Dorsal sepal smaller than lateral sepals, elliptic, acute to subacuminate, basally unguiculate, with seven parallel nerves. Lateral sepals are obliquely oblanceolate, acute to subacuminate, basally unguiculate, with seven parallel nerves. Petals are shorter and wider than the sepals, ovate to oblanceolate, acute and longitudinally sulcate on both adaxial and abaxial surfaces. Both lip and column are descending in their natural configuration. The lip is entire, elliptic to subovate, convex, strongly appressed to the column and with a rounded or mucronate tip. The basal margins of the lip are raised and wrap around the column while the base is adnate to the column for a short distance. Callus generally absent except for an elevated platform directly beneath the lip that is deltoid in shape with seven short, magenta veins extending apically. The column is creamy white and yellow with the recurved wings greenish in color at the margins. The dorsal surface of the column is suffused with dark purple lines basally turning into spots apically while the anther is pale yellow. The trigonous column is dorsiventrally flattened into a obtriangular shape with a shallow groove on the ventral surface. The clinandrium topped with three poorly-defined teeth.