MOUNT RORAIMA 1\ BRITISH GUIANA. 51 



lieaves opposite, petiolate, coriaceous; petiole 1-2 J, lin. long; blade |-1| in. long, 

 .'t 1 in. broad, oblong, elliptic or obovate, subacute or obtuse and apiculate, more or less 

 acute at the base, slightly revolute along the margins, with the midrib impressed above, 

 prominent beneath, and the veins invisible. Flowers terminal, solitary or in a sessile 

 3- (or more?) flowered cyme. Pedicels 2-4 lin. long, rather stout, slightly rough from 

 minute tubercles. Bracts and bracteoles ^-1 lin. long, acuminate. Calyx 3^-4 lin. 

 long, eampanulate, deeply 5-lobed ; lobes 2|-3 lin. long, oblong, obtuse. Corolla 1-li 

 in. long, somewhat funnel-shaped, 5-lobed, curved or oblique; lobes 3i-t£ lin. long and 

 broad, suborbicular, contracted at the base. Stamens included; filaments filiform, 

 recurved near the apex and then shortly curved upwards at the very apex ; anthers erect, 

 2-2^ lin. long, oblong subobtuse, cordate at the base. Ovary ovoid, nan-owed into the 

 5 lin. long style, with a shortly 2-lobed stigma. 



Summit of Mount Roraima, 8600 ft., McConnell 8f Quelch, 106, GVJ. 



A very distinct species, perhaps nearer to Lisianthus oralis, Ruiz A: Paw. than to any 

 (it her. 



Lisianthus Elisabeth. k, Griseb. in Linnsea, xxii. (1849), p. to. 



Lisianthus aff. L. macrantho, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 279. 

 Leiothamnus Elisabeths, It. H. Schomb. in Verh. des Ver. Beford. Gartenb. in Preuss. xviii.(1847), 

 p. 155, t. 1 ; R. Schomb. Bot. Rem. Brit. Guiana, p. 77. 



Upper slopes and ledge of Mount Roraima, im Thum, 188 ; McConnell 8f Quelch, 

 25. — Endemic. 



HYDROPHYLLAC1LF. 



Hyduolea spinosa, Linu. Sp. PL ed. 1, p. 328. 



ireng Valley, McConnell 8f Quelch, 262. Kotinga Valley, McConnell fy Quelch, 180. 

 Savannahs generally, McConnell 8f Quelch, 313. 



BOltAGINACEJE. 



Heliotropium strictissimuji, Moric. ?, PL Xouv. Am. p. 146, t. 87. 

 Ireng Valley, McConnell A- Quelch, 220, 302. 



CONVOLVULACE.E. 



Ipomojia irengana, N. E. Brown, sp. ii. Caulis gracilis, volubilis, subpubescens, 



internodiis ^-1 poll, longis. Folia parva, petiolata, late cordata, obtusa, minute 



apiculata, supra velutina, subtus albo-tomentosa. Flores axillares, solitarii, pedi- 



cellati. Calycis lobi oblon^i, obtusi, puberuli. Corolla lj-lj poll, longa. extra 



pubescens, purpurea. 



Stems very slender, twining, woody below, slightly pubescent, with iuternodes ^-1 in. 



long. Leaves small ; petiole 2-5 lin. long, slender, terete, pubescent ; blade ^-1 in. long, 



|-| in. broad, cordate or roundish-cordate, obtuse, minutely apiculate, velvety-tomentose 



above, whitish-tomentose beneath. Flowers axillary, solitary. Pedicels 2-2 J lin. long, 



very minutely bracteolate at the base, pubescent. Sepals subequal, 8|-4 lin. long, 



If lin. broad, oblong, obtuse, thinly pubescent or puberulous. Corolla 1-j-H in. long, 



B 2 



