BOTANICAL SOCIETY OF LONDON. 
57 
the Gymnogramma chrysophylla, we had Ferns, the underside 
of the leaves of which showed a powder of a dull pale 
yellow, approaching nearer to the silver colour of the G. 
calomelanos. 
The foliage of the new r Ferns is as large, or even larger 
than that of the latter species, and forms a complete contrast 
to the delicate and elegant foliage of the G. chrysophylla. 
The form of the fronds also resembles more the fronds of the 
G. calomelanos than those of their mother plant. Their 
pinnules instead of being oval-shaped as in the G. chryso- 
phylla are more or less lanceolated, elongated, and pinnati- 
fid, as in the G. calomelanos ; in such a manner one may 
say, as the abstraction made from the yellowish powder from 
the underside of the fronds, the new hybrid species of the 
Fern approached nearer to the G. calomelanos than to the 
G. chrysophylla, although proceeding from the underside 
of the latter species. 
But to form a more correct judgment of the analogy, and 
the difference between our hybrid species and those from 
which it has been produced, I have described the distinct 
characters of the three species in question. 
Gymnogramma chrysophylla, Spr. Frondibus bipinnatis, 
pinnis lanceolatis, pinnulis approximates sessilibus ovatis 
incisis striatis, superioribus coadunatis, subtus aureo-fari- 
nosis. 
Gymnogramma calomelanos, Kaulf. Frondibus bipinnatis, 
pinnis apice attenuatis, pinnulis lanceolatis acuminatis inciso- 
serratis, inferioribus pinnatifidis, summis confluentibus, 
subtus albo-farinosis. 
Gymnogramma hybrida, Nobis. Frondibus bipinnatis, 
pinnis apice attenuatis, pinnulis ovato-lanceolatis inciso-ser- 
ratis, inferioribus pinnatifidis, summis confluentibus, subtus 
flavicantibus. 
The above remarks led to a long discussion, in which 
several members expressed their doubts, as to the power 
of plants so low in the scale producing hybrids. The Secre- 
tary then announced that Mr. D. Cooper would at the next 
meeting commence a course of three Lectures on Botany, 
one hour previous to the Chair being taken, and continue 
them every night of meeting, at the same time, until com- 
pleted, and to which the members and their friends were 
invited. 
