Appearance
"Rubus caesius" is similar to and often confused with forms of "Rubus fruticosus". It is a small shrub growing up to 2 m tall with biennial stems which die after fruiting in their second year. It sends out long runners which root at the tip to form new plants. The stems are bluish-grey and sometimes prickly. The alternate leaves are hairy above and below. They are stalked and the leaf blades are palmate in shape, either consisting of three oval leaflets with serrated margins and acute points or just being three-lobed. The inflorescence is a loose cluster of several white flowers about 2.5 cm in diameter. The calyx has five sepals and the corolla is composed of five spreading petals with finely toothed margins. There is a boss of stamens in the centre and there are several pistils. The fruit is an aggregate of several black, fleshy drupes with a bluish waxy bloom. The dewberry flowers from June to September.
Distribution
"Rubus caesius" most often inhabits areas with rocky, basic soil and light shade. It is often found in forest margins, coppices, rocky broadleaf woods and waterside thickets. The Dewberry can hybridise with the raspberry and the stone bramble.
Habitat
"Rubus caesius" most often inhabits areas with rocky, basic soil and light shade. It is often found in forest margins, coppices, rocky broadleaf woods and waterside thickets. The Dewberry can hybridise with the raspberry and the stone bramble.References:
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