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176 FIELDIANA: BOTANY, VOLUME 28 Ocfiureinfi. FIGURE 29 Erythrodes confusa. 1, Plant (X 3/5); 2, Flower from the side (X 2); 3, Petal (X 5): 4, Column with anther attached, from the side (X 5); 5, Lip and spur, from above (X 3).
BOTANICAL EXPLORATION IN VENEZUELA - I 177 Type in herb. Chi. Nat. Hist. Mus., no. 1203776, southeasternfacing slopes along Cano Negro (tributary of Cano Iguapo), Cerro Duida, Territorio Federal Amazonas, alt. 305-1095 m., August 25-26, 1944, Julian A. Steyermark 57966. This species appears to be allied to the Brazilian Erythrodes commelinoides (Rodr.) Ames, but differs in its narrower leaves and much smaller flowers with differently proportioned lip. In vegetative appearance it . suggests aratanhensis (Rodr.) Ames and E. multifoliata C. Schweinf., but the perianth is very different. Stelis (1 is par C. Schweinfurth, sp. nov. Herba epiphytica, pro genere mediocris, rhizomatosa. Rhizoma gracile, vaginis arctis tubulatis omnino juventute velatum. Caules secundarii numerosi, rari vel approximati, apice unifoliati. Folium conspicue petiolatum; lamina oblongo-elliptica, acuta, infra cuneata. Inflorescentiae saepissime solitariae vel duae, diffusae vel suberectae, folium subaequantes vel duplo superantes, supra dense multiflorae. Flores perparvi, glabri. Sepala valde inaequalia, trinervia. Sepalum dorsale late ovatum vel rotundato-ovatum. Sepala lateralia similia, multo minora, valde obliqua. P eta la minuta, suborb iculari-rhorabica, cum parte anteriore late rotundata et incrassata. Labellum subaequale, valde incrassatum, semiorbiculari-ovatum antice visum, transverse cuneato-trapeziforme superne visum. Columna generis . Plant epiphytic, medium-sized for the genus, producing an elongate rhizome. Roots fibrous, filiform, glabrous, scattered. Rhizome slender, irregularly flexuous, entirely concealed by close tubular sheaths which waste away in course of development. Secondary stems numerous, scattering (about 2.5 cm. apart) to approximate, making an acute angle with the rhizome, up to 7.2 cm. long (commonly much less), unifoliate at the apex, entirely or mostly concealed by two to four close tubular evanescent sheaths. Leaf erect or erectspreading, distinctly petioled; lamina oblong-elliptic, acute with a minutely tridenticulate apex, cuneate below, coriaceous, about 4-7.5 cm. long, 9-17 mm. wide; petiole slender, about 2 cm. or more long. Inflorescences commonly solitary or two (rarely remnants of a third one appears), diffuse to suberect, subequaling to twice surpassing the leaf, subdensely to densely many-flowered and racemose above, rather loosely flowered toward the base. Floral bracts minute, infundibuliform, acute. Flowers very small, glabrous, deep purple or dull lavender with mulberry-purple lip. Sepals markedly unequal, 3-nerved, connate below. Dorsal sepal broadly ovate or round-ovate, obtuse to subacute, about 3 mm. long and nearly as wide below. Lateral sepals very obliquely round-ovate, about 2 mm. long and wide below. Petals minute, suborbicular-rhombic, with the anterior portion broadly rounded and fleshy-thickened, about 0.5 mm. long and 1 mm. wide. Lip subequal to the petals, very fleshy, with a transverse thickening across the middle and a small conical tubercle near the base, semiorbicular- ovate when viewed from the front, trans-
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o 2 CM XI E> RAR.Y OF THL UNIVERSIT
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FIELDIANA: BOTANY A Continuation of
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NUMBER 1 LIST OF ILLUSTRATIONS TEXT
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PAGE 67. Emmotum ptarianum 342 68.
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CONTRIBUTIONS TO THE FLORA OF VENEZ
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BOTANICAL EXPLORATION IN VENEZUELA
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