MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 609 
Prate LXV. 
Fig. 1. Asplenium sikkimense, C. B. Clarke, from Hooker’s Sikkim example; basal portion of the 
lowest pinna of the frond, nat. size. 
Fig. 2. Nephrodium gracilescens, Hook., var. decipiens, C. B. Clarke, from a Sikkim example; a frond, 
nat. size—A. One segment of a pinna, magn. 3 diam., showing the divided venules. 
Prate LXVI. 
Aspidium Prescottianum, Wall, var. Bakeriana, (sp. W. S. Atkinson), from a Sikkim example.— 
b. A portion of the centre of a frond, nat. size. a. The whole of the same frond, } nat. size, 
in outline, to show the proportion between length and breadth of the frond, and the non- 
attenuation of the base; the cutting of the pinn: not shown. 
Prate LXVII. 
Fig. 1. Nephrodium gracilescens, Hook., var. hirsutipes, from a Khasi example.—a. Base of a frond, 
nat. size. ò. Two segments of a pinna, magn. 4 diam., showing the hairy involucres. 
Fig. 2. Nephrodium gracilescens, Hook., var. didymochlænoides.—c. Base of a frond, nat, size. d. Two 
segments of a pinna, magn. 3 diam., showing the elliptic involucres. 
Dag LXVIII. 
Fig. 1. Nephrodium Filix-mas, Richd., var. panda, C. B. Clarke, from a Chumba example; basal por- 
tion of a frond, nat. size. 
Fig. 2. Nephrođium Filix-mas, Richd., var. normalis, C. B. Clarke, — a Khasi example ; a frond, 
nat. size. 
Dag LXIX. 
Fig. 1. Nephrodium Filix-mas, Richd., var. Khasiana, C. B. Clarke, from a Khasi example ; lower 
portion of a frond, nat. size. 
Fig. 2. Nephrodium Filix-mas, Richd., var. Schimperiana, C. B. Clarke, from a Sikkim example ; 
lower portion of a frond, nat. size. 
Nephrodium Filiz-mas, Richd., var. fibrillosa, C. B. Clarke, from the North-west Himalaya; a frond, 
nat. size. 
Prare LXXI. 
Nephrodium Filiz-mas, Richd., var. marginata, sp. Wall, from a Sikkim example; basal portion of 
the lowest pinna of a frond, nat. size. 
Nephrodium rhodolepis, C. B. Clarke, from a Sikkim example ; basal portion of the lowest pinna of a 
frond, nat. size. 
Prate LXXIII. 
Nephrodium i ingens, W. S. Atkinson, from a Sikkim example; fragment from the base of a frond, 
nat. size. The lowest pinna (A) is fertile; the next (B), and all the superior pinne, 
barren. 
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