Juglans major lanceolate leaflets, wide by long. The small nut has a thick shell with deep grooves enclosing an oily, edible seed. Where the range of "J. major" overlaps that of "J. microcarpa", the two interbreed, producing many intermediate forms. Juglans major Juglans major (literally, the larger walnut), also known as Arizona walnut, is a walnut tree which grows to with a DBH of up to at elevations of in Texas, Oklahoma, New Mexico, Arizona, and Utah. It also occurs in Mexico as far south as Guerrero. Common names include Arizona black walnut (as it belongs to the "black walnuts" section "Juglans"
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