75 



AFFINITIES. 



1. With E. melanophloia, F.v.M. 



Mueller [Eucalyptographia) states that it is only with E. melanophloia that 

 E. prumosa can be confounded, and he proceeds to indicate the differences. I have 

 referred to the matter under E. melanophloia. 



2. With E. pulverulenta, Sims. 



Among trees with roundish, sessile, greyish, opposite leaves only E. pulverulenta need be alluded to 

 here in reference to their distinguishing marks ; but it has its umbels solitary and axillary, its anthers 

 elongated and 'opening with longer slits, and its fruits flat or convex-rimmed. (" Eucalyptographia," under 

 E. pi-uinosa.) 



It seems only necessary to add that E.pruinosa, so far as is known at present, 

 is always heteroblastic as regards its leaves. Its leaves are larger than those of 

 E. pulverulenta, and it is a tropical, or almost tropical, sjDecies, while E. pulverulenta 

 grows in elevated districts in New South Wales and Victoria with low winter 

 temperatures. 



3. With E. gamophylla, F.v.M. 



The connate leaves, smaller flowers, shorter lid, longer anther slits, and most particularly the 

 sharply triangular seeds, surrounded by a diaphanous membrane, distinguish E, gamopliylla readily from 

 E. pruinom. — (" Eucalyptographia," under E. pruinosa.) 



A marked rim is present in the fruit in E. pruinosa, and the fruits are 

 broader and larger than I have seen them in E. gamophylla. 



4. With E. pleuroearpa, Schauer (E. tetragona, F.v.M.). 



This is another glaucous species which might be brought under review in this 

 connection. The anthers of the two species are different in shape and arrangement, 

 the leaves of E. pleuroearpa have a very short petiole, the fruits are very much 

 larger, while the operculum is hemispherical or nearly so. E. pleuroearpa is always, 

 so far as we know, never more than a tall slender shrub, native of south Western 

 Australia, 



