Donald Shoemaker’s Barkeria
An erect, caespitose, deciduous herb with an epiphytic habit growing between 8-45 cm. in height but on rare occasions to 70cm. Roots: flattened against the porophyte host or subterete, long, rarely branched, white in color with green tips. Stems: grayish-white, thickened, fusiform with 4-7 internodes, 2-14 cm. in length. Young stems are green covered with purplish spots while older stems are covered with scarious, papery bracts. Leaves: 2-6 ascendent-erect or arched, distichous, lanceolate, acute, very succulent but still flexible, present only on the newly developing growth and appressed to the stem via an articulated joint but generally only present on the distal half of the stem. Leaves are green and conduplicate, splotched with dark green adaxially, while the reverse is carinate and suffused with reddish-purple spots. Inflorescence: terminal, erect, lax, panicle with 2-4 branches (rarely a raceme), from the new growth, on a peduncle covered by tubular bracts (scarious at anthesis), 7-60 cm. in length with 3-40 successive, slightly pendulous flowers with 2-3 flowers open at any time. Flowers: attractive, resupinate, weakly fragrant diurnally, 1.3-2.3 cm diameter spread, pinkish-purple to white blushed with pink, and with the tepals extended over the lip in a fan-shaped disposition. Sepals are longer and wider than the petals. Dorsal sepal erect or sometimes incurved, ovate-lanceolate to oblanceolate, obtuse, rounded to subapiculate, wide base or even clawed, with three branching veins and dorsally subcarinate. Lateral sepals incurved, obliquely lanceolate or elliptic, falcate, acute to subacute with five branching veins and dorsally subcarinate. Petals extended, nearly flat, obliquely lanceolate, broadly ovate or elliptic, acuminate to obtuse, subapiculate, subunguiculate at the base, longitudinally sulcate on both surfaces and with three branching veins. Lip descending, fused to the column via a cuadrate, concave claw that protrudes abaxially as a bump on the underside of the flower. Lip is variable in shape, ovate, rhombic obovate to elliptic, acuminate to obtuse, mostly flat but sometimes reduplicate at the apex or deflexed. Margins are frequently white, basally erect while apically repand and pleated. Lip is white to pale pink-lilac but with the veins pigmented in brilliant magenta. The callus forms a raised platform, white, subcuadrate, concave or canaliculated, thickened which terminates in a triangular mucro. There are three raised longitudinal keels somewhat yellowish in color at their midpoint and papillose in texture. The eight lateral veins are thickened and somewhat branched. Column is short and wide, trigonous in cross-section, greenish-yellow flecked with spots or lines of reddish-purple basally or at the margins, dorsiventrally compressed, succulent, slightly incurved at the apex and divergent from the lip. The column is obtrapezoid when viewed dorsally with two spreading, fleshy column wings. The clinandrium has three teeth at the apex, the central one wider and longer than the two lateral ones, and a bright yellow anther cap.