58 REPORT ON TWO BOTANICAL COLLECTIONS FROM 
STACHYTARPHETA MUTABILIS, Vahl, Enum. i. p. 208. 
Ireng Valley, WeConnell A: Quelch, 245. 
LABIATA. 
Hypris ARBOREA, Benth. in DC. Prod. xii. p. 132. 
Kotinga Valley, McConnell § Quelch, 142, 184. 
AMARANTACE. 
GOMPHRENA GLOBOSA, Linn. Sp. Pl. ed. 1, p. 224. 
At Pelepowta Village in the Ireng Valley, McConnell & Quelch, 210. 
PHYTOLACCACE. 
PHYTOLACCA THYRSIFLORA, Fenzl, ex J. A. Schmidt in Mart. Fl. Bras. ii. p. 343. 
Kotinga Valley, WeConnell & Quelch, 152. 
PROTEACE. 
RovupaLa MONTANA, Aubl. Pl. Guian. i. p. 83. 
Savannahs generally, McConnell & Quelch, 310. 
LORANTHACEJE. 
PHORADENDRON RORAIM.E, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 281, 
and pp. 267, 269. 
Summit of Mount Roraima, McConnell & Quelch, 82, 680.—Endemic. 
BURMANNIACEZX. 
BURMANNIA BICOLOR, Mart. Nov. Gen. & Sp. i. p. 10, t. 5; R. Schomb. Reisen in Brit.- 
Guiana, iii. p. 1066. 
Upper slopes of Mount Roraima, McConnell & Quelch, 14.—Widely dispersed in 
'Tropieal America from Cuba to Brazil, westward to Peru. 
ORCHIDACEA. By R. A. Boss, ALS 
PLEUROTHALLIS RORAIMENSIS, Rolfe, sp. n. Lepanthiformis, caulibus gracilibus, vaginis 
apice ciliatis. Folia elliptica vel obovato-elliptica, minute apiculata, parva. Scapi 
subelongati, gracillimi, pauciflori. Bracteæ spathacez. Sepalum posticum basi 
ovatum, apice caudato-acuminatum ; sepala lateralia subsimilia, basi angustiora. 
Petala oblonga, obtusa.  Labellum trilobum, lobis lateralibus rotundatis, intermedio 
oblongo obtuso. 
Stems slender, 4 in. long, clothed with three or four angular or striate sheaths, 
broader and ciliate at the apex. Leaves elliptical or obovate-elliptical, minutely 
apiculate, 2-4 lin. long, 14-2 lin. broad. Scapes very slender, 1-1 in. long, about 2- or 
