MOUNT KOKAIMA JN BKITISH GUIANA. 49 



Stem twining, lf-1^ lin. thick, puberulous. Leaves opposite, very distant, 2f, -3| in. 

 long, ly- 2 in. broad, oblong, obtuse, apiculate, cordate at the base, scaberulous above, 

 finely greyish-tomentose beneath, reticulated with dark veins; petiole 1 ',-2 lin. long, 

 puberulous. Racemes axillary, from one axil, 2-3 in. Long, including the f- in. long 

 peduncle, many-flowered, densely puberulous in all parts. Bracts about 2 lin. long. 

 lf-1^ lin. broad, oblong or oblong-lanceolate, acute, thin, spreading, deciduous. 

 Pedicels alternate, 2-3 lin. long, moderately stout. Calyx-lobes 1^ lin. long and nearly 

 as broad, ovate, acute, each with an ovate acute slightly toothed scale at its base inside. 

 Corolla about 2 in. long, funnel-shaped, curved, 5-lobed, pubescent outside, densely 

 bearded with dellexed white hairs at the insertion of the stamens within, elsewhere 

 glabrous ; the lower half of the tube is slightly inflated at its base and there about 

 2^ lin. diam., narrowed above to H lin. diam. ; the upper half much enlarged, funnel- 

 shaped or subcampanulate ; lobes about f in. long, hatchet-shaped, one side being dilated 

 into a large subquadrate, obtusely rounded, membranous lobe. Stamens 5, included, 

 inserted at the top of the narrow part of the tube ; filaments short, flat, linear, densely 

 bearded on the inner face ; anthers 2} 2 lin. long, linear-oblong, acute, shortly cordate at 

 the base, connate, adnate to the stigma. Disk tubular, f lin. deep, 5-crenate. Ovary 

 pubescent; style about 1J in. long, very slender, glabrous ; stigma conical, 5-winged. 



Tolimbaru Creek near Mount Boraima, McConnell 8f Quelch, I'M). 



ASCLEPIADACE^]. 



Ditassa taxifolia, Decne. in DC. Prod. viii. p. 578. 



Kotinga Valley, McConnell Sf Quelch, 165, 166. Ireng Valley, McConnell 8f Quelch. 

 323. 



LOGANIACEiE. 



BoNyuNiA minor, N. E. Brown, sp. n. (Plate 9, figs. 1-5.) Frutex glaber. Folia 

 opposita, approximata, breviter petiolata, coriacea, rotundato-ovata, subacuta, basi 

 rotundata vel leviter cordata. Cyma? subdensa?, ramulis puberulis, floribus sessilibus 

 braeteolatis. Calyx campanulatus, minute puberulus, dentibus deltoideis subacutis. 

 Corollse tubus subcylindiicus, extra pubescens, intra parte inferiore puberulus, 

 superiorc glaber ; lobi patentes, recurvi, superne cariuato-incrassati, superne 

 etiam carina et marginibus puberuli, area basali triangulare glabri. Ovarium 

 breviter pilosum, stylo pubescente, stigmate bilobo. 

 A shrub. Branches terete, glabrous, dark brown. Leaves opposite, subimbricate, 

 ascending, shortly petiolate, coriaceous, glabrous; petiole 1 lin. long; blade f-lj in. 

 long, ^-1 in. broad, roundish-ovate, subacute, broadly rounded or slightly cordate at the 

 base, with prominent veins beneath. Cymes terminal, rather dense, 1-1} in. diam., 

 with puberulous branches 2-4 lin. long. Flowers sessile, bracteolate. Bracteoles 

 |-1 lin. long, linear or oblong-lanceolate, obtuse, minutely puberulous. Calyx about 

 \\ lin. long, campanulate, puberulous, with 5 deltoid subacute teeth. Corolla tubular, 

 with 5 spreading recurved lobes; tube 3^ lin. long, subcylindric, pubescent outside, 

 puberulous within in the lower §, glabrous above; lobes about 2| lin. long, spreading. 



SECOND SERIES. — BOTANY, VOL. VI. H 



