Notes on Plants at Roraima. 219 
under an inch broad, obtuse, narrowed gradually to the 
base, conspicuously repand on the margin with broad 
rounded lobes, veins very distinct when the frond is held up 
to the light, arranged in pinnate groups, one opposite each, 
lobe, the sterile veinlets forming unequal hexagonal areolae, 
with a single vein bearing a sorus in the centre of each. 
Sori £-i in. long, 4-6 to each of the central pinnated groups, 
erefto-patent as regards the whole lamina, seen partially at 
last on the lower surface by slits that seem as if they were 
made with a knife through the epidermis. 
Frond in shape and texture much resembling that of 
Polypodium trifurcatum, from which it differs by its long 
stipes and totally different veining in addition to the entirely 
dissimilar shape and position of its sori. In naming it after 
the late W. H. Campbell Esq., I am carrying out the wish 
of Mr. im Thurn. 
170. Vittaria lineata, Sw. Upper slopes of the mountain. 
212, 218. Vittaria stipitata, Kunze. Upper slope of the mountain. 
New to Guiana. 
229, 231. Acrostichum latifolium, Sw. Upper slopes of the moun- 
tain. Two different varieties, both rigid in texture, nar- 
rowed very gradually from the middle to the base, and 229 
dotted over the under side with minute subpeltate brown 
palese. 
233, 23S. Acrostichum Lingua, Raddi. 
267. Acrostichum stenopteris, Klotzch. In the neighbourhood of 
the encampment. New to Guiana. 
266. Acrostichum decoratum, Kunze. In the neighbourhood of the 
encampment. 
278. Acrostichum Aubertii, Desv. var. crinitum, nov. var. 
Recedes from the Brazilian and Columbian type of the 
species towards A. villosum by its much more crinite lamina 
both in the sterile and fertile frond, and by the stipes being 
clothed with squarrose subulate brown paleas, as in the 
Venezuelan A Reichenbachii, Moritz. Path to the upper 
slope. The species is new to Guiana. 
237 (45*) Acrostichum (Elaphoglossum) leptophlebium, Baker, 
n. sp. Rhizomate repente cylindricolignoso paleis par vis mem- 
branaceis lanceolatis brunneis crispatis dense vestito, stipite 
EE 2 
