A New Species of Aristolochia (Aristolochiaceae) from Bahia, Brazil Favio GonzdlezHerbario Nacional Colombiano, Instituto de Ciencias Naturales, Universidad Nacional, Ap. Ae. 7495, Santafe de Bogota, ColombiaABSTnRACr. Aristolochia longispathulata, a newspecies from the "Mata Atlantica," is described andillustrated. The new species belongs to Aristolochiasubser. Hexandrae E Gonzalez. It is easily recog-nized by flowers that are slightly curved and havea long, spatulate, fimbriate limb, which is palegreen on the inner surface. Aristolochia longispa-thulata is similar to A. arcuata and A. rumicifolia,from eastern and southeastern Brazil. Its floral mor-phology also resembles that of A. peltata, from theWest Indies, and A. sessilifolia, from southern Bra-zil, Argentina, and Uruguay.RFSt Mo. Neste trabalho uma nova especie de Ar-istolochiaceae da Mata Atlantica, Bahia, Brasil, A.longispathulata, e descrita e illustrada. Esta esp&-cie pertence a Aristolochia subser. Hexandrae F.Gonzalez. E facilmente reconhecida por apresentarsuas flores levemente curvadas, cnom o limbo longo,espatulado e fimbriado, alem de possuir a face ad-axial atipicamente alvo-esverdeada. Aristolochialongispathulata e semelhante a A. arcuata e A.rumicifolia, especies da regiao oriental e sul-ori-ental do Brasil, embora a morfologia floral destaespecie assemelha-se a de A. peltata, das IndiasOcidentais, ou da especie A. sessilifolia, do sul doBrasil, Argentina e Uruguai. Although primarily pantropical, the genus Aris-tolochia (Aristolochiaceae) is more highly diversein the Neotropics, especially in Brazil and Hispan-iola. Following the description of several new spe-cies by Martius and Zuccarini (1824), the genusAristolochia in Brazil has been reviewed by Masters(1875), Malme (1904), Schmidt (1935, 1936,1938), Hoehne (1925, 1927, 1942, among others),and Bazzolo and Pfeifer (1977). Hoehne's (1942)comprehensive treatment lists some 75 species asnative to Brazil. Since then, several local florashave included treatments of Aristolochiaceae (Ahu-mada, 1975; Capellari, 1996; Moore, 1915). A new collection of Aristolochia from Bahia, Bra-zil, has come to my attention because of its long,spatulate, fimbriate flowers (Fig. 1). This collectiondoes not match any species known to occur innortheastern or eastern South America (see Ahu-mada, 1967, 1975, 1977, 1979, 1989; Feuillet &Poncy, 1998; Hauman, 1923; Hoehne, 1927, 1942;Masters, 1875; Moore, 1915). There is some resem-blance with A. rumicifolia Martius & Zuccarini (seeMartius & Zuccarini, 1824, tab. 54), from the statesof Sao Paulo and Rio de Janeiro, and A. arcuataMasters (Fig. 2), from the states of Minas Gerais,Sao Paulo, and Rio de Janeiro. However, the lasttwo species differ from the Bahian collection in sev-eral important diagnostic characters (Table 1), suchas the shape and size of the leaves, the length ofthe peduncle and ovary, and the overall shape ofthe perianth. The discovery of a new Aristolochiaspecies comes as no surprise as the area of Bahiais well known for endemism not only for plants butalso for various groups of animals (see, e.g., Moriet al., 1983). Unfortunately, only a few patches ofundisturbed forest remain in that area, which maybe the reason for having no other specimens of thisnew species besides the type collection.Aristolochia longispathulata F. GonzAlez, sp. nov. TYPE: Brazil. Bahia: Jussari, Serra do Teimoso, 7.5 km N of Jussari on road to Pal-mira, then 2 km W to Fazenda Teimoso, then 45 min. walk W to Reserva da Fazenda Tei-moso, 15�10'S, 39�35'W, 300-450 m, 8 Feb. 1998 (fl), W. W Thomas, A. M. Amorim & J. L. Paixao 11741 (holotype, CEPEC; isotype, NY). Figure 1. Aristolochia arcuata ei A. rumicifolia affinis, a qua im-primis differt perianthio subrecto, usque 9.5 cm longo,limbo spatulato longiore usque 7 cm longo, fimbriato, pa-gina interna viridi-glauca. Glabrescent vine. Petioles to 2.5 cm long; bladesnarrowly ovate, 8-16 cm long, 3-4.5 cm wide,membranaceous, smooth, base slightly cordate, si-nus 5-10 mm deep, lobes parallel, apex obtuse,glabrous and with small white, siliceous bodiesabove, pale green and puberulous especially alongthe veins below; venation acrodromous, basal pri-mary veins 3, prominent on the lower side, higherorder venation densely reticulate, prominulous on NovoN 10: 371-374. 2000.
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