| Literature | Brandegee 1891; Kellman 2003; Koch 1950a, 1951e; Koch and Ikenberry 1954; Lesquereux 1868; Steere et al. 1954; Yurky 1990, 1995. As Catharinea callibryon Watson 1880. As Catharinea undulata Bradshaw 1926. |
| Illustrations | Abramov and Volkova 1998; Ignatov and Ignatova 2003; Ignatov and Smith Merrill 1995; Ireland 1982; Nyholm 1971; Smith 1978. |
| Bioregions | CW, NW, SN. |
| Vouchers | Calaveras Co.: Moran Creek 1 mile north of Avery, Wagner 4360 (UC); Sonoma Co.: Guerneville, Cook 244 (UC); Santa Cruz Co.: Quail Hollow Ranch, Kellman 300 (CAS) and Last Chance Road near Last Chance Creek, Kellman 896 (CAS). |
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