Ill. Bot. Himal. Mts. 1: 232, t. 51 (1835)
[Illustrations of the botany and other branches of the natural history of the Himalayan Mountains and of the flora of Cashmere, Plates]
 
606012 855520 Pycnocycla glauca Lindl. J.F. Royle, Ill. Bot. Himal. Mts., vol. 2(Plates): : t. 51 (1839) [Drake]
 
4699692 855530 Pycnocycla spinosa Decne. H.F. de Jaubert, E. Spach, Ill. Pl. Orient., vol. 3 : t. 243 (1847)
 
4699682 855531 Pycnocycla tomentosa Decne. H.F. de Jaubert, E. Spach, Ill. Pl. Orient., vol. 3 : t. 242 (1847)