MOUNT RORAIMA IN BRITISH GUIANA, 19 
PotyeaLa Dorop, Aubl. Pl. Guian. ii. p. 737, t. 295; R. Schomb. Reisen in Brit.- 
Guiana, iii. p. 1097. 
Kotinga Valley, McConnell & Queich, 196. Ireng Valley, MeConuell & Quelch, 250. 
POLYGALA CELOSIOIDES, Mart. ev A. W. Benn. in Mart. Fl. Bras. xiii. pt. 111. p. 35. 
Ireng Valley, McConnell & Quelch, 223. 
SECURIDACA MARGINATA, Benth, in Hook. Journ. Bot. iv. (1812), p. 103. 
Kotinga Valley, McConnell & Quelch, 157. 
MONNINA CACUMINA, N. E. Brown, sp. n. Folia oblonga, acuta vel obtusa, apiculata, 
exstipulata, glabra. Racemi densiflori, floribus breviter pedicellatis. Bracteæ 
lanceolatze, acutæ, floribus breviores. Alæ ellipticee, glabree, basi ciliates. Carina 
glabra, ciliata. Petala lateralia utrinque pubescentia. Vagina staminea supra 
hirta. Fructus compresso-ellipsoideus, exalatus, unilocularis, glaber. 
Stem subglabrous, or very thinly covered with very short hairs. Leaves about 2 in. 
long, 3-1 in. broad, oblong or oblong-lanceolate, acute or obtuse and apiculate, rather 
thin in the dried state, exstipulate. Racemes 3-4, terminal, 2-4 in. long, rather densely 
many-flowered.  Bracts 2 lin. long, 3 lin. broad, lanceolate, acute, caducous. ^ Pedicels 
3-1 lin. long. Dorsal sepall1j lin. long, 3 lin. broad, ovate, acute, concave, ciliolate ; 
the two lower sepals similar but rather smaller, connate to their middle; lateral 
sepals or ale about 2} lin. long, 2 lin. broad, elliptic, obtuse, with incurved 
margins, glabrous, ciliate towards the base. Lower petal or keel 23 lin. long, 2 lin. broad, 
obscurely 3-crenulate at the apex, glabrous ciliate along the sides. Lateral petals 2-2} 
lin. long, obliquely tapering from a broad base to an obtuse apex, adnate to the staminal 
tube, densely ciliate along the upper margin, pubescent along the middle of the outer 
side and more densely all over within. Staminal tube villose at the apex. Ovary elliptic, 
with a large unilateral gland at its base, glabrous; style thickened upwards, slightly 
ineurved. Fruit 3-3} lin. long, about 1? lin. broad, elliptic, subacute, compressed, not 
winged, 1-celled, glabrous. 
Summit of Mount Roraima, 8600 ft. McConnell & Quelch, 645. 
Allied to M. cestrifolia, H. B. & K., but differing in its much larger flowers. 
KRAMERIA SPARTIOIDES, Klotzsch, ex O. Berg, in Bot. Zeit. xiv. (1856), p. 761. 
Ireng Valley, MeConnell & Quelch, 244, 268. 
VOCHYSIACE.E. 
TRIGONIA SUBCYMOSA, Benth. in Hook. Lond. Journ. Bot. ii. (1843), p. 373. 
Ireng Valley, McConnell & Quelch, 222. 
PORTULACACE. 
PORTULACA SEDIFOLIA, N. E. Brown, sp. n. Caules humiles, diffusi. Folia parva, lineari- 
oblonga vel oblongo-lanceolata, breviter petiolata, axillis dense pilosa. Calycis lobi 
p3 
