Dewberry
Dewberry - Rubus caesius
Weak, sprawling sub-shrub stems round, slightly prickly, unridged with a whitish bloom. Leaves trifoliate. Flowers white, occasionally pink, 20 to 25 mm in small clusters. Fruit black, with a waxy bloom.
Damp habitats, scrubby areas and grassland, often on limestone.
Flowers May to September.
Perennial shrub.
Widespread in England and Wales although less common further west, and infrequent in the north of Britain.
Occasional in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 102 of the 617 tetrads.
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Phragmidium bulbosum
Phragmidium bulbosum is a gall-causing rust fungus that affects the leaves of various Rubus species (Blackberry, Dewberry etc.). There is no host alternation. It is usually recorded as telia, which are black and in the leaf undersides; the teliospores have 4 - 7 cells, a long pedicel and an apiculus. Spermogonia are on the leaf upperside, and minute yellow aecia underside.






