. British ferns and their varieties. r <;i^- ^4, tip^. LXXII POLYSTICHUM ANGULARE, Oar. CRISTATOGKACILK CoWPER 4o8 BRITISH FERNS LXXIII Obtusissimum (Wo//.) Mr. G. B. Wollaston. South Devon. 1861. 1 ft. 6 in. Needs no description, — one of the first dozen of British Ferns,—dark green in colour ;—a remarkable peculiarity about this fern isthat the spores, which are very abundant, produce only normalforms. The finest specimen by far of the imbricate class.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1912