Publication: N. Amer. Sylv. 1: 49. 1842.
selected vouchers: WTU
Notes: FNA3: "Alnus rhombifolia is the common alder throughout the dry Mediterranean climatic zone of coastal western United States. Mexican populations are not known, but because A . rhombifolia has been collected as far south as San Diego, California, it should be expected in adjacent Baja California.
Native Americans used various parts of Alnus rhombifolia medicinally for diarrhea, consumption, and burns, as a blood purifier, an emetic, and a wash for babies with skin diseases, and to facilitate childbirth (D. E. Moerman 1986)."