Six new species of Bignoniaceae from upper Amazonia are described as Arrabidaea affinis, Cuspidaria emmonsii, Distictis occidentalis, Haplolophium nunezii, Schlegelia caulifora, and Schlegelia hirsuta. In addition, merger of Urbanolophium with Haplolophium is proposed, necessitating the new combination H. glaziovii. Names are needed for these six undescribed species of Bignoniaceae lianas from upper Amazonia for the familial treatment in Flora de Colombia and/or the Catalogue of the Flowering Plants and Gymnosperms of Peru. Four of the six are widespread, and one is documented to have ethnobotanical uses. In addition, discovery of Haplolophium nunezii makes unavoidable the reduction of Urbanolophium to Haplolophium, necessitating a new combination for its only species. Arrabidaea affinis A. Gentry, sp. nov. TYPE: Ecuador. Napo: Lago Agrio, forest on banks of lake, 250 m, 0?7'N, 76?55'W, 1 Apr. 1980 (fl), J. Brandbyge & E. Asanza 30393 (holotype, MO; isotype, AAU). Frutex scandens, ramulis teretibus, minute puberulis, consociebus glandularum in nodis inter petioles. Folia 23-foliolata, interdum cirrho simplici, foliolis ellipticis vel anguste ovato-ellipticis, minute puberulis non nisi in nervis principalibus. Inflorescentia floribus in panicula terminali dispositis. Calyx campanulatus, valde bilabiatus, 5-7 mm longus, eglandulosus; corolla alba, tubulo-campanulata, extus sparsim puberula. Capsula ignota. Liana to at least 16 cm diam., the branchlets terete, lepidote and minutely puberulous or papillose-puberulous, longitudinally striate, drying brownish with inconspicuous lenticels, lacking pseudostipules, interpetiolar glandular fields large and conspicuous, usually with notched upper margin. Leaves 3-foliolate or 2-foliolate with a simple tendril or tendril scar; leaflets elliptic to narrowly ovateelliptic, acute to acuminate, obtuse to truncate at base, often the extreme base abruptly short-decurrent onto petiole apex, 5-17 cm long, 3.5-9.5 cm wide, chartaceous, secondary veins 4-6 on a side, rather conspicuously minutely lepidote above and below, also minutely subpuberulous on midvein above and basal main veins below, drying gray to dark brown above, olive-brown or olive-gray below with conspicuously darker main veins; petiolules 0.5-6 cm long, petiole 0.6-8 cm long, lepidote and minutely inconspicuously puberulous. Inflorescence a terminal panicle with well-developed central axis, the flowers mostly arranged in small + flat-topped, corymbose clusters, each with 1-4-cm-long peduncle (cf. A. florida), tannish puberulous and lepidote, bracts and bracteoles minute or absent. Flowers with the calyx campanulate, strongly bilabiate, 5-7 mm long, 4-5 mm wide, the indument mostly of glandular-lepidote and stalked-lepidote trichomes, without plate-shaped glands; corolla white, broadly campanulate above the narrowly tubular base, 1.6-2 cm long, 0.8-1 cm wide at mouth of tube, the tube 1-1.5 cm long, the lobes ca. 0.5 cm long, rather sparsely pubescent with flexuous multicelled trichomes outside, the lobes inside puberulous mostly with stalked lepidote glands, tube inside glabrous except for short glandular trichomes at filaments' insertion; stamens didynamous, the thecae divaricate, 2 mm long, the connective slightly extended; ovary oblong, 1.5 mm long, 0.8 mm wide, drying blackish, densely lepidote; disk cylindric, 0.6 mm long, 1 mm wide. Fruit unknown. Distribution. Andean foothill region of upper Amazonia from Colombia to Peru, mostly on richsoil forest; 130-500 m elevation. Additional specimens examined. COLOMBIA. META: alrededores de La Macarena, Sabanas de San Juan de Arama, Laguna de Plaza Bonita, 500 m, 22 Apr. 1957 (fl), J. Idrobo 2606 (COL, fragment MO). ECUADOR. NAPO: 15 km W de Coca, via Los Zorros, 0?35'S, 77?2'W, 250 m, 18-20 Apr. 1985 (fl), J. Zaruma, D. Neill, M. Baker & W. Palacios 108 (MO). PERU. LORETO: Rio Corrientes at Ecuador border, between Teniente Lopez and Puesto Avanzado, 280-350 m, 4 Apr. 1977 (st), Gentry, Revilla & Daly 19087 (AMAZ, MO); Explorama Inn, 1 km S of Indiana, 3?30'S, 73?1'W, 130 m, 18 June 1986 (st), Gentry, Vasquez & Jaramillo 54672 (AMAZ, MO), 13 Feb. 1987 (st), Gentry, Vasquez & Jaramillo 55764 (MO); Allpahuayo, 39 km SW of Iquitos on road to Nauta, 3?50'S, 73?25'W, 130 m, 24 Feb. 1988 (st), Gentry, Vasquez, Blaney & Jaramillo 61884 (AMAZ, MO). PASCO: Prov. Oxapampa, Iscozacin, Rio Iscozacin, 10?12'S, 75?13'W, 350 m, 11 July 1986 (st), S. Knapp, R. Perez & 0. Sharehua 7828 (MO). MADRE DE DIOS: Tambopata, alluvial soil along Rio Tambopata, 12?49'S, 89018'W, 280 m, 19 Feb. 1984 (st), Gentry, Vasquez & Jaramillo 45698 (MO). NOVON 2: 159-166. 1992. This content downloaded from 157.55.39.78 on Sat, 25 Jun 2016 05:54:15 UTC All use subject to http://about.jstor.org/terms