ROSA HIBERNICA 
indicating the Rosa spinosissima parentage, but these acicles are often 
absent from considerable portions of the stem, as in our plate. Its 
nearest allies amongst continental Roses are Rosa armatissima Desegl. 
and Rip., and Rosa Schultzii Rip. 
There are three varieties: the Irish type, with leaves pubescent 
beneath and pubescent petioles ; var. glabra Baker, with leaflets much 
more elliptical and acuminate, entirely glabrous, the usual English 
form ; and var .cor difolia Baker, found by Professor Oliver in Northum- 
berland, with the terminal leaflet cordate at the base. The last is 
very similar to, if not identical with, Rosa involuta , var. Wilsoni Baker. 
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