MOUNT RORAIMA IN BRITISH GUIANA, 51 
Leaves opposite, petiolate, coriaceous; petiole 1-24 lin. long; blade }-12 in. long, 
$-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 F) flowered cyme. Pedicels 2—4 lin. long, rather stout, slightly rough from 
minute tubercles. Bracts and bracteoles 3-1 lin. long, acuminate. Calyx 34-4 lin. 
long, campanulate, deeply 5-lobed; lobes 21-3 lin. long, oblong, obtuse. Corolla 1-14 
in. long, somewhat funnel-shaped, 5-lobed, curved or oblique; lobes 34—44 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, 
2-23 lin. long, oblong subobtuse, cordate at the base. Ovary ovoid, narrowed into the 
5 lin. long style, with a shortly 2-lobed stigma. 
Summit of Mount Roraima, 8600 ft., McConnell & Quelch, 106, 649. 
A very distinct species, perhaps nearer to Lisianthus ovalis, Ruiz & Pav., than to any 
other. 
LISIANTHUS ELISABETHÆ, Griseb. in Linnæa, xxii. (1849), p. 40. 
Lisianthus aff. L. macrantho, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 279. 
Leiothamnus Elisabethe, R. H. Schomb. in Verh. des Ver. Befórd. 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 Thurn, 188; McConnell & Queleh, 
25.— Endemic. 
HY DROPHYLLACE. 
HYDROLEA spinosa, Linn. Sp. Pl. ed. 1, p. 328. 
Ireng Valley, McConnell & Quelch, 262. Kotinga Valley, McConnell & Quelch, 180. 
Savannahs generally, McConnell & Quelch, 3138. 
BORAGINACE. 
HELIOTROPIUM STRICTISSIMUM, Moric. ?, Pl. Nouv. Am. p. 146, t. 87. 
Ireng Valley, McConnell $& Quelch, 220, 302. 
CONVOLVULACE.E. 
IPOMŒA IRENGANA, N. E. Brown, sp. n. Caulis gracilis, volubilis, subpubescens, 
internodiis J-1 poll. longis. Folia parva, petiolata, late cordata, obtusa, minute 
apiculata, supra velutina, subtus albo-tomentosa. Flores axillares, solitarii, pedi- 
cellati. Calycis lobi oblongi, obtusi, puberuli. Corolla 1-14 poll. longa, extra 
pubescens, purpurea. | ee 
Stems very slender, twining, woody below, slightly pubescent, with internodes 3-1 in. 
long. Leaves small; petiole 2-5 lin. long, slender, terete, pubescent ; blade 3-1 in. long, 
1-3 in. broad, cordate or roundish-cordate, obtuse, minutely apiculate, velvety-tomentose 
above, whitish-tomentose beneath. Flowers axillary, solitary. Pedicels 2-24 lin. long, 
very minutely bracteolate at the base, pubescent. Sepals subequal, 33-4 lin. long, 
12 lin. broad, oblong, obtuse, thinly pubescent or puberulous. Corolla ape in. long, 
