Barner, J. 2007. Propagation protocol for production of propagules (seeds, cuttings, poles, etc.) Crepis acuminata Nutt. seeds. Native Plant Network. U.S. Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources. http://npn.rngr.net/propagation/protocols [Accessed 2018 April 2].