Rubus × knappianus (subgenus Idaeobatus, Rosaceae), a new hybrid raspberry for the British flora

Abstract

A new hybrid raspberry between Rubus cockburnianus Hemsl. and R. idaeus L. spontaneously occurring in Brighton, East Sussex is described and provided with the name R. × knappianus A. Spiers & J.D. Arm. Its origin, ecology, and distinguishing characteristics are discussed and its previous artificial production through breeding for the fruit trade is noted. Some comments regarding breeding systems in the parent species are made.

Keywords:

• Bramble
• Non-native
• Self-sterile
• Vice-county 14

We are grateful to Mike Shaw and Professor Clive Stace for putting the authors in touch and to Richard Sanford for assistance with the Latin diagnosis.