A CYTOTAXONOMIC SURVEY OF THE NATIVE BLACKBERRIES OF NOVA SCOTIA

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Abstract
The native blackberries of Nova Scotia consist of 2 diploid (2n = 14) spp., Rubus hispidus L. and R. alleghenien-sis Porter, and a polyplold largely apomictic group of plants with somatic chromosome numbers ranging from 21 to 42. Triploid clones made up over 3/4 of the polyploid group, and a very wide range of morphological diversity was exhibited at all polyploid levels. Native blackberries were found in all parts of Nova Scotia except the Cape Breton highlands, but were in greatest numbers in the southwestern part of the province. Except for 1 clone, the diploid spp. were restricted to the latter area.