Sell, P. & Murrell, G., 2005
Flora of Great Britain and Ireland 4: Campanulaceae to Asteraceae
Volume 4 (of 5) in this ambitious flora. Each volume has full keys and descriptions and includes detailed accounts of apomictic genera and many infraspecific variants.
||Cambridge University Press (CUP)
||978 0 521 55338 4
||All the British wild species known at the time, plus naturalised species, frequent garden escapes and some ornamental shrubs and trees.
||20 line diagrams.