The specific epithet means longitudinally striped and probably refers to the yellow leaf margins, although the illustration in the original description does not show this feature. Variant spellings: The name was printed as "vitlatum" in the original illustration, but this appears to have been orthographic error which was corrected in the text. (McCook, 1989).
WCM Protologue Reference:
(Vell.) Rolfe, Orchid Rev. 4: 332 (1896)
Terrestrial herb to 1 m tall. Rhizomes short and stout, to 1.4 cm in diam; plants clumped closely together. Roots striate, wooly, to 0.4 cm in diam. Leaves linear, 30 - 55 cm long, 2.3 - 3.4 cm wide, glabrous; margins yellow, shiny, to over 1 mm wide; apex oblique, minutely 3-lobed. Inflorescence a 3 - 6 flowered spicate raceme, 50 - 80 cm tall; peduncle dark brown to purple, light brown to green basally, sparsely hirsute, more so basally and below floral bracts; hairs short, 1-2 celled from a glandular base, often deciduous, then with the glandular base remaining. Floral bracts broadly lanceolate, 7.0 - 9.5 cm long, 2.3 - 2.8 cm wide, almost twice the length of the enclosed ovaries, tinged with purple, reticulately veined apically; margins yellow, veinless, to more than 1 mm wide; apex acute, yellow. Sterile lower bracts 4 - 5, lanceolate, 7 - 12 cm long, to 4 cm wide, lowest bract 10 - 29 cm from plant base; margins same as leaves; apex acute, minutely 3-lobed and rounded . Flowers greenish-purple to pale yellow-brown; margins white tinged with purple; nerves green; outer surfaces mostly glabrous; inner surfaces mostly glabrous. Dorsal sepal linear-elliptic, 4.3 - 5.0 cm long, 1.5 - 1.7 cm wide, green, 12 - 15 nerved, somewhat reticulate, glabrous; margins entire to slightly undulate; apex acute, minutely hooded. Synsepal elliptic-ovate, 4.0 - 4.8 cm long, 2.1 - 3.2 cm wide, about equal to labellum in length, green, 13 - 17 nerved, somewhat reticulate; margins entire; apex obtuse, minutely hooded. Labellum oval, 3.0 - 4.0 cm long, 1.5 - 1.7 cm wide, greenish-purple outside; labellar opening square in front, flaring slightly; apical labellum rim undulate to jagged, glabrous; apical labellum lining to 0.8 cm deep; lateral labellum rim spurred; spurs rounded, to 0.6 cm high, often obscured on herbarium specimens; lateral labellum lining 1.1 - 1.5 cm wide; claw face glabrous, ribbed, beige with yellow and green spots centrally located, often in vertical rows; green tubercles present at lower lateral lobe margins, green, often obscured on herbarium specimens; claw interior villous. Petals 5.5 - 8.0 cm long, 0. 5 - 0.8 cm wide, linear, green with purple margins, held at 20 - 30' angle from labellum, twisting only slightly; inner surface glandular pubescent apically, basal hairs pilose, multicellular; margins undulate and ciliate on basal half of petals; apex glandular pubescent on inner surface. Staminode widely rhombic, 0.4-0.5 cm long, 0.6 - 0.8 cm wide, green; basal margins lined with brown to dark red multicellular hairs up to 0.1 cm long; hairs often continue onto column, shorter toward lobes; apex acute to roundly acuminate. Column to 0.3 cm long, green, puberulent. Pollinarium to 0.2 cm wide. Stigmatic area to 0.6 cm wide. Ovary, including pedicel, 4.5 - 5.0 cm long, shorter than subtending bract, glabrous apically, the rest glabrous to sparsely puberulous, brown, curving apically to 90 ͦ. Capsule dark purple-brown, glabrous to sparsely hirsute, curving sharply at apical end. Seeds to 0.85 mm long. Chromosome number 2n=18 (Karasawa, 1980).