Barkeria dorotheae Halb.
Dorothy O’Flaherty’s Barkeria
An erect, subcaespitose, lithophytic or epiphytic deciduous herb that grows between 5-100 cm. Roots: flattened against the porophyte host or subterete, long, rarely branched, white in color with green tips. Stems: grayish-white, thickened, fusiform, 3-20 cm. in length. Developing stems are covered with membranous sheaths while older stems are covered with scarious, papery bracts. Leaves: 2-7 lanceolate, acute, distichous, coriaceous to subsucculent, present only on the newly developing growth and appressed to the stem via an articulated joint. Inflorescence: terminal, erect, straight, raceme, from the new growth, on an elongated subterete, rather thin peduncle covered by tubular bracts (scarious at anthesis) up to 80 cm. in length with 2-18 flowers. Apical nodes on the rachis will sometimes develop into secondary branches and produce an additional flush of flowers. Flowers: Attractive, resupinate, inodorous, 2.8-3.5 cm diameter spread, tepals lilac, lip lilac to pale lilac with white disk and darker spots on the lip apex. Produced and maturing successively. Lateral sepals are larger than the petals, obliquely lanceolate to subovate, acute. Dorsal sepal is shorter than the petals, elliptic, acute. Petals are obovate to elliptic-ovate, acute and basally unguiculate. Lip is obovate, entire, occasionally emarginate, attenuate at the base and adnate to the column basally. The lateral margins are reduplicate and give the lip the appearance of a saddle in wild-type clones. The callus is comprised of two laminar, fleshy keels delimiting an elongated elliptic fovea. Where they converge, three raised longitudinal keels develop, yellow in color with magenta spotting, the central one being the most prominent and reaching almost to the apex of the lip. The column is broadly obovate, creamy white with the recurved wings yellow-green in color at the margins. The dorsal surface of the column is suffused with dark purple spots 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 two lateral teeth.