Four new South American species of Memora (M. cidii, M. contracta, M. sastrei, and M. velutina) are described and three are illustrated. Memora cidii has flattened inflorescence axes, campanulate calyces, and bracteoles extending beyond the calyx tip. Glands at the base of the corolla lobes distinguish M. contracta, and M. sastrei is unique in having conspicuous yellow-dendroid pubescence on its inflorescence axes and calyces. Memora velutina is distinguished by pilose pubescence throughout. Relationships of these species to other Memora species are discussed. Memora Miers (Bignoniaceae) is a genus of 32 species of lianas, scandent shrubs, or treelets found in tropical South America east of the Andes (Gentry, 1977, 1982, 1997). Memora is distinguished from other genera of tribe Bignonieae by the combination of terete branchlets and pinnately or bipinnately compound leaves (Gentry, 1978). Memora species produce showy, yellow to red, tubular-funnelform corollas, linear-oblong to oblong-orbicular dehiscent capsules, and bialate to corky seeds (Gentry, 1977, 1997). Gentry and Tomb (1980) suggested that Adenocalymna, Memora, and two species of Tanaecium may compose a basically natural group because most of these species share medium-textured yellow corollas, simple tendrils, and primarily biseriate ovules. During preparation of a review of Memora, specimens annotated by A. H. Gentry were discovered that were neither described fully nor published validly. Although Gentry did not publish them before his untimely death, these taxa represent evolutionary units suitable for recognition as species. In a draft of his Flora de Colombia treatment of Bignoniaceae, Gentry described Memora sastrei but did not provide a Latin description or diagnosis. The other three Memora species presented here, M. cidii, M. contracta, and M. velutina, had no written descriptions and few notes pertaining to their circumscription. 1. Memora cidii A. H. Gentry ex Hauk, sp. nov. TYPE: Brazil. Amazonas: Mun. of Novo Aripuana, BR 230, Rod. Transamazonica, 400 km from Humaiti, 0715'S, 60?00'W, 4 May 1985, C. Ferreira 6013 (holotype, MO!; isotypes, NY!, US!). Figure 1. Frutex scandens, ramulis teretibus glabris sine consocibus glandularibus in nodis interpetiolaribus. Folia opposita imparipinnata compositis foliolis 1-3 jugatis ovatisellipticis obtusis; pseudostipulis inconspicuis glandulosis. Inflorescentia paniculata axillaris; bracteolis cupulatis. Flos calyce truncato campanulato extus glanduloso apice puberulo duabus bracteolis subtentus; corolla tubulosoinfundibuliformi tubo glabro; thecis antherarum divaricatis; ovario oblongo lepidoto; disco pulvinato. A speciebus aliis rhachidibus et pedunculis complanatis olivaceis, inflorescentiae bracteolis triangularibus caducis differt. Lianas; branches drying tan to brown, not striate, glabrate, the surface rough, with interpetiolar glandular fields lacking and interpetiolar transverse ridge inconspicuous or absent, lenticels not evident; pseudostipules persistent, subfoliaceous, ovate-oblong, 4-5 x 2-3 mm, glandular, glabrate. Leaves opposite, estipulate, petiolate, 50-55 cm long, 2-3-pinnate with a pair of opposite pinnae and the terminal pinna often modified into a tendril, each pinna imparipinnate with 1-3 sets of opposite simple or compound pinnules, the terminal segment somewhat larger than the lateral segments; petioles 4-6 cm long, terete, glabrate; petiolules 1-3 cm long, inconspicuously sulcate, glabrate; ultimate segments entire, ovate to ovate-elliptic, 16-22 x 7-11 cm, equilateral, plane, chartaceous, glabrate, apically obtuse, basally oblique to broadly acuminate, the venation brochidodromous with 8-10 principal vein pairs, marginally plane; joints of the compound leaf conspicuously enlarged. Inflorescences elongate, axillary racemes to 15 cm long, branched, severalto many-flowered; rachis and peduncles flattened, glabrate, and bracteate, the bracts triangular, 4-6 x 1-2 mm, caducous, minutely glandular, glabrate with ciliate margins; pedicels 1-2 mm long, glabrate; bracteoles ovate-ellipSThis paper is number 8 of the GENTRY INVITATION SERIES, in acknowledgment of the contributions to the study of the Bignoniaceae made by Alwyn H. Gentry. NovoN 9: 48-54. 1999. This content downloaded from 207.46.13.164 on Mon, 27 Jun 2016 05:35:28 UTC All use subject to http://about.jstor.org/terms Volume 9, Number 1 1999 Hauk Memora from South America 49