Pires & Sytsma 2002, p. 1351. Pires, J. Chris; Sytsma, Kenneth J. (August 2002). "A Phylogenetic Evaluation of a Biosystematic Framework: Brodiaea and Related Petaloid Monocots (Themidaceeae)". American Journal of Botany. 89 (8): 1342–1359. doi:10.3732/ajb.89.8.1342. PMID21665737.
Pires & Sytsma 2002, p. 1351. Pires, J. Chris; Sytsma, Kenneth J. (August 2002). "A Phylogenetic Evaluation of a Biosystematic Framework: Brodiaea and Related Petaloid Monocots (Themidaceeae)". American Journal of Botany. 89 (8): 1342–1359. doi:10.3732/ajb.89.8.1342. PMID21665737.