Six New Species of Bignoniaceae from Upper Amazonia Alwyn H. GentryMissouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166, U.S.A.ABSTRACT. Six new species of Bignoniaceae fromupper Amazonia are described as Arrabidaea affin-is, Cuspidaria emmonsii, Distictis occidentalis,Haplolophium nunezii, Schlegelia cauliflora, andSchlegelia hirsuta. In addition, merger of I rban-olophium with Haplolophium is proposed, neces-sitating the new combination H. glaziovii. Names are needed for these six undescribed spe-cies of Bignoniaceae lianas from upper Amazoniafor the familial treatment in Flora de Colombiaand/or the Catalogue of the Flowering Plants andGymnosperms of Peru. Four of the six are wide-spread, and one is documented to have ethnobotan-ical uses. In addition, discovery of IHaplolophiumnunezii makes unavoidable the reduction of ( r-banolophium to Haplolophium, necessitating a newcombination for its only species.Arrabidaea affinis A. Gentry, sp. nov. TYPE: Ecuador. Napo: Lago Agrio, forest on banks of lake, 250 m, 007'N, 76�55'W, 1 Apr. 1980 (fl), J. Brandbyge & E. Asanza 30393 (ho-lotype, MO; isotype, AAU). Frutex scandens, rarnulis teretibus, minute puberulis,consociebus glandularum in nodis inter petioles. Folia 23-foliolata, interdum cirrho simplici, foliolis ellipticis velanguste ovato-ellipticis, minute puberulis non nisi in nervisprincipalibus. Inflorescentia floribus in panicula terminalidispositis. Calyx campanulatus, valde bilabiatus, 5 7 mmlongus, 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 papil-lose-puberulous, longitudinally striate, drying brown-ish with inconspicuous lenticels, lacking pseudosti-pules, 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 ovate-elliptic, acute to acuminate, obtuse to truncate at base, often the extreme base abruptly short-decur-rent 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 darkbrown above, olive-brown or olive-gray below withconspicuously darker main veins; petiolules 0.5-6cm long, petiole 0.6-8 cm long, lepidote and mi-nutely inconspicuously puberulous. Inflorescence aterminal panicle with well-developed central axis,the flowers mostly arranged in small � flat-topped,corymbose clusters, each with 1 4-cm-long pedun-cle (cf. A. florida), tannish puberulous and lepidote,bracts and bracteoles minute or absent. Flowers withthe calyx campanulate, strongly bilabiate, 5-7 mmlong, 4 5 mm wide, the indument mostly of glan-dular-lepidote and stalked-lepidote trichores, with-out plate-shaped glands; corolla white, broadly cam-panulate above the narrowly tubular base, 1.6 2cm long, 0.8-1 cm wide at mouth of tube, the tube1-1.5 cm long, the lobes ca. 0.5 cm long, rathersparsely pubescent with flexuous nulticelled tri-chomes outside, the lobes inside puberulous mostlywith stalked lepidote glands, tube inside glabrousexcept for short glandular trichomes at filaments'insertion; stamens didynamous, the thecae divari-cate, 2 mm long, the connective slightly extended;ovary oblong, 1.5 mm long, 0.8 mm wide, dryingblackish, densely lepidote; disk cylindric, 0.6 mmlong, 1 mm wide. Fruit unknown. I)istribution. Andean foothill region of upperAmazonia from Colombia to Peru, mostly on rich-soil forest; 130-500 m elevation. Additional specimens examined. COLo(OMBIA. META:alrededores de La Macarena, Sabanas de San Juan deArama, Laguna de Plaza Bonita, 500 m, 22 Apr. 1957(fl), J. Idrobo 2606 (COL, fragment MO). Ect AItOi). NAI'):15 km W de Coca, via Los Zorros, 0�35'S, 77�2'W, 250m, 18-20 Apr. 1985 (fl), J. Zaruma, D. Neill, M. Baker& W. Palacios 108 (MO). PERU. LORETO: Rio Corrientesat Ecuador border, between Teniente Lopez and PuestoAvanzado, 280-350 m, 4 Apr. 1977 (st), Gentry, Revilla& Daly 19087 (AMAZ, MO); Explorama Inn, 1 km Sof Indiana, 3�30'S, 73�1'W, 130 m, 18 June 1986 (st),Gentry, Vasquez & Jaramillo 54672 (AMAZ, MO), 13Feb. 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, 10012'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, 89�18'W,280 m, 19 Feb. 1984 (st), Gentry, Vasquez & Jaramillo45698 (MO). NovoN 2: 159-166. 1992.
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