Flora of the state of Washington Piper, Charles V. (Charles Vancouver), 1867-1926 creator text book Washington Govt. Print. Off 1906 1906
print
ENG Frodin 2 : 192. "Issued October 8, 1906." Floras Plants Washington (State) Bulletin (United States National Museum) Contributions from the United States National Herbarium, v.11 https://www.biodiversitylibrary.org/bibliography/7683 3477722 agr06001784 10.5962/bhl.title.7683 U. S. Dept. of Agr. Library