Laing. — The Norfolk Island Species of Pteris. 



233 



abbreviated. I have seen no specimens, however, in whicli it could be said 

 to be interrupted ; and this makes the identification of my plant with 

 P. Trattinickiana somewhat doubtful. 



I have seen only one authentic specimen of P. quadriaurita, and that 

 a South African one. A comparison shows that the form from Cape Colony 

 has longer, narrower, and more acuminate pinnules and much more 

 interrupted sori than the one under consideration. I am usually averse 



Fig. 3. — Pteris comans Forst. f. = ? Pteris Zahlbruckneriana Endl. 

 A pinna of the Norfolk Island form (^ natural size), with a magnified fertile pinnule, a. 



to identifying two species which differ somewhat and come from different 

 areas, but think that as P. quadriaurita is the name of a well-known and 

 widely distributed form it had better be retained here. My specimens 

 show no fertile fronds. 



B. Species with Netted Venation. 

 (d.) Pteris comans Forst. f . = ? Pteris Zahlbruckneriana Endl., No. 41. 



Excluding Pteris comans, I have orjy two forms from Norfolk Island 

 coming under this head. One of these agrees well with the description of 



