Notes on Plants at Roraima. 211 
254. Arundinella brasiliensis, Raddi 5400 ft 
154. Echinolsena scabra. H.B.K. ,, 
246. Saccharum (Eriochrysis) cayennensis P. de B. „ 
260. Ischaemum latifolium, Kth. „ 
359. ? Guadua (barren) „ 
18. ? Chusquea ( „ ) Arapook. 
302. Gram, dub ( „ ) Top. 
The following is a complete list of the ferns collefted. 
The numbers are Mr. im Thurn's collecting numbers. 
Those enclosed within brackets indicate the position of the 
species in the sequence followed in our Synopsis Filicum. 
In determining the species I have had the kind help of Mr. 
Jenman, the Government Botanist of the colony, who is 
now in England, and who has paid special attention to 
ferns ever since he has lived in Demerara. 
The summit of the mountain is 8,600 feet and the encamp- 
ment of the party was pitched at 5,700 feet above sea-level. 
J. G. Baker. 
343. Gleichenia pubescens, H.B.K. var. G. longipinnata, Hook. 
Upper slopes of the mountain. 
92. Cyathea vestita, Mart. In the neighbourhood of the encamp- 
ment. 
270. Alsophila bipinnatifida, Baker, with a slender caudcx six or 
seven feet in length. In the neighbourhood of the encamp, 
ment. 
87. (16*) Alsophila macrosora, Baker, n. sp. Stipitibus basi 
paleis linearibus brunneis imbricatis dense vestitis, frondi- 
bus amplis deltoideis bipinnatifidis crassiusculis proeter venas 
primarias faciei superioris glabris, pinnis oblongo-lancc- 
olatis, pinnulis lanceolatis inferioribus distinfte petiolatis 
basi truncatis ad costam alatam pinnatifidis segmentis ter- 
tiariis oblongis crenulatis venis simplicibus ereclo-paten- 
tibus 5-6 — jugis, soris magnis globosis rsuperficialibus in- 
tramarginalibus, receptaculis dense paraphysatis. 
Basal palese extending 4-5 inches up the stipe, glossy 
moderately firm in texture, the largest I Inch long. Stipe a 
foot long, brownish, deeply grooved down the face. Lower 
pinnae 15-18 inches long, 8.9 inches broad. Lower pin. 
nulcs4 inches long, 4 inch broad, with a petiole £ inch long, 
DD 2 
