84 



POLYSTICHUM ANGULARE. 



nulose-serrated; the anterior base sub-auricled; the basal anterior 

 pinnule much larger, and all the pinnules united with the rachis 

 by a brief, almost-winged petiole. The stipes and basal portion 

 of the rachis proliferous, a bulbil being found on the larger 

 fronds beneath the soil, so that each large frond is accom- 

 panied by a small one. Remarkable for its narrow imbricated 

 fronds. Mr. Wollaston, of Chiselhurst, Mr. Sim, of Foot's 

 Cray, Mr. C. Monkman, of Malton, and Messrs. Stansfield, of 

 Todmorden, have each forwarded excellent fronds. 



Fig. 51. 



AcuLEATOTDES, Wollaston. (Fig. 51.) — This variety of Poly- 

 stichum angulare closely resembles the Polystichum aculeatiim 

 in some respects, and may be regarded as a variety that connects 

 more or less the two species. It was found in Devonshire, in 

 the year 1860, by Mr. G. B. Wollaston, of Chiselhurst. This 

 aculeatum-\oo\im^ Fern has lanceolate and somewhat acuminate 

 fronds. The pinnules decurrent, set on the pinnae with a broad 

 footstalk, as in the species Polystichum aculeatum. The frond 

 illustrated was procured from Mr. Wollaston. 



