Monograph of the North and Central American Species of the Genus Senecio- Part II
Greenman JM. 1915. Monograph of the North and Central American Species of the Genus Senecio- Part II. Annals of the Missouri Botanical Garden. 2(3):573-626
Greenman JM. 1915. Monograph of the North and Central American Species of the Genus Senecio- Part II. Annals of the Missouri Botanical Garden. 2(3):573-626