362 
FERNS COLLECTED IN COSTA RICA BY 
MR. P. G. HARRISON. 
By J. G. Baxer, F.R.S. 
Tue following is a list of the species contained in a collection 
of ferns made recently amongst the mountains of the interior of 
Costa Rica, at an elevation above sea-level of from 1000 to 5000 
feet, by Mr. P. G. Harrison, who is now on a visit to this country. 
As so little is known about the botany of that region, it is to be 
hoped that he will carry forward his explorations. The numbers 
prefixed to the novelties indicate their position according to 
sequence in our ‘ Synopsis Filicum.’ 
Gleichenia pubescens, H. B. K.—G. revoluta, H. B. K. 
‘ Adiantum concinnum, H.B.K.—A. macrophyllun Sw.—A. Kaul- 
JFussii Kunze.—A. tetraphyllum Willd.—A. intermedium Sw. A 
illd. 
‘4 ‘ 
‘Synopsis Filicum.’— A. cultrifolium L.—A. pumilum Sw.—A. 
bissectum Sw.— A. formosum Willd. — A. furcatum Thunb.—A. 
(Diplazium) sylvaticum Presl.— aA. (Diplazium) Shepherdi Spreng.— 
A, eiplamian) arboreum Willd.—A. (Diplazium) costale Sw. 
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lower diplazioid. Indusium broad, firm, glabrous, persistent. 
ay 7 Malayan A. pallidum Blume. 
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seen. tipe naked, greenish brown, 4-6 in. ‘ am 
oblong-lanceolate, simply pinnate, bright green on both surfaces, 
glabrous, moderately firm in texture, 1}-14 ft. long. 5-6 in. : 
apex of the frond, all sessile, lanceolate, acuminate, the largest 
3-3} in. long, }—§ in. broad above the dilated base, deeply serrated, 
especially towards the tip, auricled on both sides at the base, the 
and i 
