PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 293 
Allied to the Brazilian Р. achilleefolium, Kaulf., but quite different in texture, in the 
shape of the segments, and by its very short simple veins. Found in the neighbourhood 
of the encampment. 
172. POLYPODIUM ($ GONIOPHLEBIUM) LORICEUM, Linn. Base of the great cliff. 
840. POLYPODIUM ($ PHLEBoDIUM) AUREUM, Linn., var. (P. arnoLATUM, H. B. K.). Inthe 
neighbourhood of the encampment. 
208. POLYPODIUM ($ CAMPYLONEURON) ANGUSTIFOLIUM, Sw., var. (P. AMPHOSTEMON, 
Kunze). In the neighbourhood of the encampment. 
295 (14%). GyMNoGRAMME ($ PTEROZONIUM) CYCLOPHYLLA, n. sp. (Plate LIII. figs. 1, 2) ; 
caudice erecto, stipitibus czespitosis elongatis erectis basi primum paleis minutis 
lineari-subulatis patulis preditis, frondibus parvis nitidis rigide coriaceis apice 
rotundatis margine recurvato basi cuneatis margine plano, venis flabellatis 
immersis, soris oblongis ad venarum apicem solum productis cite confluentibus 
zonam angustam intramarginalem formantibus. 
Stipes wiry, 5-6 in. long. Lamina only about an inch long and broad. Found on 
the summit of the mountain. 
101, 215 (14%). GYMNOGRAMME ($ PTEROZONIUM) ELAPHOGLOSSOIDES, n. sp. (Plate LIV. 
figs. 1-5); caudice valido lignoso paleis parvis subulatis nigro-castaneis dense 
vestito, stipitibus elongatis erectis nudis castaneis, frondibus simplicibus integris 
rigide coriaceis nudis elliptico-lanceolatis acutis vel obtusis conspicue costatis basi 
cordatis, venis confertis patulis parallelis simplicibus vel furcatis intra marginem 
evanescentibus, soris linearibus cite confluentibus frondis faciem totam inferiorem 
preter zonam angustam marginalem occupantibus. 
Stipes wiry, sometimes above halfafoot long. Fronds 6-8 in. long, fertile 1-2 inches, 
sterile sometimes 8 inches broad. Sori occupying the whole under surface except a 
marginal border. Not more than 2-5 in. broad. Found both upon the upper slopes 
of the mountain and in the neighbourhood of the encampment. 
These two interesting novelties both fall under the genus Plerozoniwm of Fée, figured 
on tab. 16 of his ‘Genera Filicum.’ The only species known previously is the very rare 
Gymnogramme reniformis, Mart., figured Icon. Crypt. Bras. t. 26, and also in Hooker’s 
* Second Century of Ferns,’ t. 9, and on tab. 49 of the Fern volume of ‘Flora Bras- 
iliensis.” The two new species are very distinct, both from one another and G. reniformis. 
In ©. cyclophylla the sori form a narrow band just within the margin; in С. reniformis 
a broad semicircle, a distinct space within the margin, whilst in G. elaphoglossoides they 
cover the whole surface except a narrow border. | 
164. GYMNOGRAMME SCHOMBURGKIANA, Kunze. Upper slopes of the mountain. 
197. GYMNOGRAMME HIRTA, Desv. Upper slopes of the mountain. New to Guiana. 
159. GYMNOGRAMME FLEXUOSA, Desv. Upper slopes of the mountain. Also new to 
Guiana. 
