ENSOLL, Andrew; HARPER, Geoffrey; URSEM, Bob; MITCHELL, David R; CRUTCHLEY, Simon. Plates. Sibbaldia: the International Journal of Botanic Garden Horticulture, [S. l.], n. 2, 2004. DOI: 10.24823/Sibbaldia.2004.160. Disponível em: https://journals.rbge.org.uk/rbgesib/article/view/160. Acesso em: 7 apr. 2025.