25 juin 2019
Albert Everett Wieslander, « Located 3 miles east of Willits on hill, north face. Dense hardwood, Garry oak. Associated species: Quercus kelloggii, Umbellularia californica, Quercus chrysolepis, Arbutus menziesii, Pinus ponderosa on the left. Mendocino County. », Berkeley Library Digital Collections, ID : 10670/1.sfdngh