96 Baker . — On the Vascular Cryptogamia 
island in January, Mr. Sherring was able to show him in this 
district alone about sixty species of ferns in a single day. 
GLEICHEiKriACE AE . 
Gleichenia pubescens , H. B. K. 
G. pectinata, Presl. Common and very variable. 
CYATHEACEAE. 
Cyathea arborea , Sm. The common tree-fern of the island ; the 
trunk reaching a height of 20-30 feet. 
C. muricata , Kaulf. A large number of Mr. Sherring’s specimens 
appear to belong to this little-known species. He distinguishes 
three forms, one softer in texture, which grows on damp ridges at 
Bellevue and Grand Etang ; a second with a taller trunk and more 
coriaceous frond ; and a third form still firmer in texture, which 
grows in swamps. The trunk varies in length from 7 to 20 feet. 
Hemitelia grandifolia , Spreng. The commonest of all the ferns of the 
island, and very variable. A form not uncommon in open 
ground, fully fertile, with frond not more than a foot long and 
pinnae only half an inch broad. Trunk always short, at most 
1-1J ft. long. 
H. horrida , R. Br. 
Alsophila aspera , R. Br. Very local. 
A. Iflltottii, n. sp. Trunk very short. Stipe a foot long, not paleaceous, 
armed with strong, spreading prickles. Frond sub-deltoid, bipin- 
nate, 2-3 ft. long, moderately firm in texture, green and glabrous 
on both surfaces ; pinnae lanceolate, 2 in. broad, the lowest a 
little dwarfed ; pinnules linear-oblong, sessile, in. broad, obtuse 
or subacute, conspicuously crenate. Veins in pinnate groups 
opposite the final lobes : veinlets 5-6-jugate, simple, ascending. 
Sori medial. — Nearest the Brazilian A. atrovirens , Presl. First 
noted in a sterile state by Mr. W. R. Elliott at Antoine, Bellevue ; 
afterwards by Mr. Sherring in sparing fructification at Pyrenees, 
on the southern slope of St. Catherine’s peak. 
HYMENOPHYLLACEAE. 
Hymenophyllum polyanthos , Sw. Both type and var. H. andinum , 
V. D. B. Not common. 
