this and var. dilatatum. Our specimen, from which the present 
figure is taken, is marked in our herbarium “ true Lastrea spinu- 
losa ” by Mr. Moore. 
Plate 18. Fertile frond and stipes of Nephrodium (Lastrea) var. spinulosum , 
Hook .,—natural size. Fig. 1. Scale from the stipes. 2. Fertile pinnule,—• 
magnified. 3. Involucre ,—more magnified. 
