A study has been made by the Botanical Department of Iowa State College during the past season of the germination of the following: Quercus Gambellii, Pasania densiflora, Maclura pomifera, Prunus caroliniana, Rhus Toxicodendron, Rhus canadensis, Gleditsia aquatica, Rhamnus californica, Rhamnus tinctoria, Lycium halimiflorum and Shepherdia argentea.
Proceedings of the Iowa Academy of Science
©1922 Iowa Academy of Science, Inc.
Pammel, L. H. and King, C. M.
"Germination Studies of Some Shrubs and Trees,"
Proceedings of the Iowa Academy of Science, 29(1), 257-266.
Available at: https://scholarworks.uni.edu/pias/vol29/iss1/58