Inflorescence; photograph by K. Schaefer, slide collection Department of Systematic Botany Arhus
inflorescence; photograph by A. Vogel, Hortus Botanicus, Leiden
leaves, inflorescence and pod; photograph by Harrison ex slide collection Herbarium Kew
flowering branch; drawing in Icones collection NHN Leiden
details flower; drawing in Lamarck, Tabl. Enc., t. 572-2