MOUNT RORAIMA IN BRITISH GUIANA. 37 
emarginate, membranous appendage at the base, glabrous; pollen apparently red. 
Ovary 5-celled, surmounted by a rather deep ring-like disk ; style much exserted, 1} in. 
long, rather slender, pubescent; stigma slightly thickened, ovoid-conical, tipped with 5 
minute points. Ovules 2 in each cell, collateral, axile, pendulous from near the top of 
the cell, and partly covered at the top by a cap-like outgrowth of the funicle-like 
placenta. Fruit a globose, ribbed berry about 1 in. diam., crowned with the calyx-tube ; 
endocarp hardened into 5 separable nutlets, 3-keeled on the back, triangular in 
transverse section, with a false cell under each lateral wing. Seeds not seen. 
Aroie Creek, im Thurn,6. Upper slopes of Mount Roraima, MeConnell & Quelch, 18; 
Appun, 1175 ; Schomburgk, 724 (815 B), 158. 
This very distinct species of Retiniphyllum appears to have been misunderstood by all 
authors. Originally it was doubtfully referred by Bentham to the genus Patima, and 
erroneously described as having very numerous seeds. Next, in Bentham and Hooker's 
‘Genera Plantarum,’ ii. p. 98, it is confused with Kutchubea insignis, Fisch., and the 
part of the generic description in that work, relating to the fruit, is drawn ùp from the 
present plant and not from the true Autchubea, which indeed it greatly resembles in 
habit, but differs in having a 5-lobed corolla, 5 exserted, reflexed stamens, with long 
filaments, a long exserted style, and in the presence of a minute disk-like involucel at 
the apex of the pedicel, which is jointed to the calyx; whilst in Kutchubæa the corolla is 
8-lobed, the stamens are 8, with the anthers almost sessile and included in the throat of 
the corolla-tube, the style is included, and the pedicel is continuous with the calyx, 
without any trace of an involucel; the foliage and stipules of the two plants are also 
very different, besides disagreeing in several minor details. Finally Baillon made a 
distinct genus of it, which he placed next to Knoxia, where it has no affinity, for it is 
undoubtedly a true Retiniphyllum, allied to R. scabrum, Benth., but differing from that 
and all others of the genus by the long slender pedicels of its lax, few-flowered 
inflorescence. The involucel is characteristic of the genus Retiniphyllum. 
PSYCHOTRIA CONCINNA, Oliver, in Trans. Linn. Soc. Ser. IT. ii. (1887) p. 276, t. 42. f. B. 
Summit of Mount Roraima, We Connell & Quelch, 80, S9, 667.—Endemice. 
PsYCHOTRIA CRASSA, Benth. in Hook. Journ. Bot. iii. (1841), p. 227; im Thurn & Oliver, 
in Trans. Linn. Soc. Ser. II. Bot. ii. (1887). pp. 265, 276; R. Schomb. Reisen in 
Brit.-Guiana, iii. p. 945. 
Summit of Mount Roraima, McConnell & Quelch, 632. Also collected on Roraima e 
Appun, 1112.—Kanuku Mountains. 
DIoDIA HYSSOPIFOLIA, Cham. & Schlecht. in Linnea, iii. (1828), p. 350. 
Kotinga Valley, McConnell & Quelch, 190. 
