385 
pinnatim nervosis. Rachis seu costa primaria gracilis, atra, 
nitida, superne viridis, Sori in omnibus laciniis etiam in 
cauda seriatim dispositi, rotundi, costam inter et marginem. 
Capsule globose, longe stipitatee, annulate. Semina globoso- 
angulata, pellucida. 
Difficult as are the pectinated kinds of Polypodium to be 
distinguished, we yet trust that the above characters will be 
found sufficient for the present individual, which we only 
possess from our valued friend, Professor William Jameson. - 
Tas. CXI. Polypodium melanopum. , Fig. 1. A lacinia. 
Fig. 2, Capsules. Fig. 3, Seeds: :—magnified. 
CRYPTOGRAMMA RETROFRACTA ; 
Fronde elongata ramosissima glabra flexuosa decomposito- 
pinnata, ramis retrofractis, pinnulis dichotomis segmentis 
linearibus ciliatis, soris furcatis. (Tas. CXII). 
Has. Near the village of Molleturo, at an elevation of 8000 . 
feet above the level of the sea, growing on the ground. 
Prof. W. Jameson. 
Frons 4-pedalis valde ramosa, repetitim pinnata, flexuosa, 
pinnis plurimis retrofractis, pinnulis dichotome divisis costa- 
tis linearibus glabris ciliatis obtusis nunc emarginatis seu 
bifidis. Rachis primaria glaberrima, flavo-fusca ; secundaria 
alata, ciliata. Sori in pinnis ultimis lineares, duo sæpe con- 
fluentes, et ita furcati. Capsule fuscæ, brevissime stipitate, 
annulo magno cinctz. Semina triangularia. 
The present is, indeed, a very remarkable species of Cryp- 
togramma, and quite distinct from any with which we are 
acquainted. Professor Jameson describes it as growing on the 
ground, and as being four feet in length; many of the primary 
pinnze, especially the lower ones, are singularly and suddenly 
bent back, and the principal rachis is very zigzag. 
Tas. CXII. Fig. 1, Segments of a pinna. ptem 25 85 Cap- 
sules, Fig. 4, Seeds: magnified. ek ‘Sian 
VOL. 111. ie ee reget d^ 
THE END. 
