Juglans californica of the genus suggests "J. californica" is sister to the remaining black walnuts (section Rhysocaryon). This article follows the conventions of "The Jepson Manual". Juglans californica Juglans californica, the California black walnut, also called the California walnut, or the Southern California black walnut, is a large shrub or small tree (up to 30 feet tall) of the walnut family, Juglandaceae, endemic to California. "Juglans californica" is generally found in the southern California Coast Ranges, Transverse Ranges, and Peninsular Ranges, and the Central Valley. It grows as part of mixed woodlands, and also on slopes and in valleys wherever conditions are
Buff-sided robin binominal name translates as stag-bellied dappled tree-nymph. The generic name "Poecilodryas" (= spotted or dappled wood-nymph) refers to the spots on the wing and tail of species in this genus and its characteristic flight and perching behaviour. The specific name "cerviniventris" refers to the buff colouration of the chest, derived from "cervus" = stag or deer and "ventris" = vent or belly. The buff-sided robin is a medium to large sized robin species, with body length ranging from . Adult buff-sided robins are not sexually dimorphic and the sexes cannot be differentiated on the basis of plumage. However males are