25 juin 2019
Albert Everett Wieslander, « One half mile south of Glen Martin. Shows exceptionally large individual of Arctostaphylos drupacea. Note height as indicated by 3' rule. See herbarium spec. Assoc species: Pinus lambertiana, Pinus ponderosa, Quercus kelloggii, Pinus coulteri, Quercus chrysolepis, Ceanothus divaricatus, Amorpha californica, Ceanothus integerrimus, Pteris aquilina lanuginosa. », Berkeley Library Digital Collections, ID : 10670/1.aad99r