288 PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 
rigida. Spiculæ mascule singule, copiose, $ unciam longze, савбалеге, inferiores pedun- 
culate. Glume 8 уасиге, staminiferze 6, lanceolate aristatee, marginibus parce ciliatis, 
arista brevis crassiuscula. Stamina in flore circiter 6. Anthera acuminata fila- 
mento zequalis, 1 unciam longa, apiculus brevissimus, trichomatum fasciculo terminali 
brevi. Spiculee femineze parvze anguste. Саша vacue 4, suprema fertilis, exteriores 
cartilagineze lanceolate brevi-aristatee, саѕіапеғе, interiores scariose, carina violacea. 
Stylus stigmati equalis, teres, crassiusculus brevis. Stigma breviter bifidum lobis 
lanceolatis obtusis planis, violaceis. Ovarium ellipticum oblongum obtuse trique- 
irum breviter pedicellatum, pedicello subtereti. бейе hypogynze, сорповае, torte. 
Pistillum j-unciale ; caryopsis fere $ unciam longa. 
Ledge, Roraima. 
This genus is most nearly allied to Lagenocarpus, but differs entirely from that genus, 
and from the rest of the Cryptaugiec, in the lateral inflorescence, the bifid stigma, with 
short flat lobes, the absence of any cupule, and the presence of a large number of hypo- 
gynous bristles. 
262. PASPALUM STELLATUM, Flügge, var. ? 
261. PANICUM NERVOSUM, Lam.? 5400 ft. 
254. ARUNDINELLA BRASILIENSIS, Raddi. 5400 ft. 
154. ECHINOLÆNA SCABRA, Н. B. K. 5400 ft. 
246. SACCHARUM ($ ERIOCHRYSIS) CAYENNENSIS, Beauv. 5400 ft. 
260. Т5снжмом LATIFOLIUM, Kunth. 5400 ft. 
359. ? ССАРПА (barren). 5400 ft. 
18. ?OHvusQUEA (barren). Атароо R. 
302. GRAM. DUB. (barren). Top. 
FERNS. By J. G. Вакев, F.R.S., F.LS. 
The following is a complete list of the Ferns collected. The numbers are Mr. im 
Thurn’s collecting-numbers. Those enclosed within brackets indicate the position of 
the new species in the sequence followed in our ‘Synopsis Filicum.’ In determining Ше 
species I have had the kind help of Mr. Jenman, the government botanist of the colony, 
who has paid special attention to Ferns ever since he has lived in Demerara. 
343. GLEICHENIA PUBESCENS, Н. В. K., уат. (С. LONGIPINNATA, Hook.) Upper slopes of 
the mountain. 
92. CvaATHEA VESTITA, Mart. In the neighbourhood of the encampment. 
270. ALSOPHILA BIPINNATIFIDA, Baker. With a slender caudex 6 or 7 feet in length, in 
the neighbourhood of the encampment. 
87 (16%). ALSOPHILA MACROSORA, Baker, n. sp.; stipitibus basi paleis linearibus brunneis 
imbrieatis dense vestitis, frondibus amplis deltoideis tripinnatifidis crassiusculis 
