Fraxinus velutina sunan kimiyya ne na nau'in bishiyar da aka fi sani da ash Arizona. Itaciya ce mai matsakaicin girma daga kudu maso yammacin Amurka da arewacin Mexico, wacce ke da duhu kore, ganyaye masu kauri da bawon launin toka-launin ruwan kasa. Kalmar "fraxinus" ta samo asali ne daga kalmar Latin don " bishiyar ash ", yayin da "velutina" ke nufin "velvety" ko "gashi" a cikin harshen Latin, yana nufin nau'in ganye.