(1)
Will, C. The European Garden Flora; a Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and under Glass. Volume III, Dicotyledones (Part I), Edited by S.M. Walters and Others. Edinburgh J. Bot. 2010, 48 (1), 131-132. https://doi.org/10.1017/S0960428600003711.