TAB. XL VII. 
Polypodium farinosum, Hook . 
Parvum submembraneceum fronde elliptico-lanceolata pinnata 
utrinque pulveraceo-farinosa albida, pinnis approximatis 
lineari-oblongis patentibus sessilibus subdecurrentibus ob- 
tusis sinuato-crenatis basi sursum obtuse auriculatis, venis 
unifurcatis apice clavatis, venula superiore apice sorifera, 
soris medio intra costam et marginem uniseriatis magnis 
aureis, stipite gracili brevi nudo. 
Hab. On the trunk of an old tree at the eastern ascent of 
the Cordillera of Quito, where the forests commence ; rare, 
and very few specimens were gathered. Prof. W. Jameson. 
Independent of the white pulverulent or subfarinaceous 
substance, which invests both sides of the half dozen specimens 
in my possession of this rare Fern, and which has the 
appearance of being quite natural, not adventitious, there is a 
something in the general outline or shape, and in the form of 
the pinna©, which, taken in conjunction with the simply furcate 
veins and the large orange-coloured sori, renders this Fern 
unlike any species with which I am acquainted. The pinna© 
are very compact, or closely placed ; the base of each is very 
unequal, the upper base broad and dilated into a lobe or 
obtuse auricle, while the lower is narrow, yet decurrent ; so as, 
in the upper half at least, to form rather a frond pinnatifid to 
the very base than a truly and entirely pinnated one. I 
have seen no specimen, nor any species like the present from 
any Botanist save Professor Jameson. 
Fig. 1. Three pinna©, upper surface, f 2. Fertile pinna, 
seen from beneath : — magnified. 
