[BOTANY]. THAYER, Emma Homan. Wildflowers of Colorado. New York, [1885]. 4o. 24 colored plates. Pictorial cloth (joints tender, chipped and frayed). -- WALCOTTE, Mary Vaux. North American Wild Flowers. Washington, 1925. 5 vols. 4o. Cloth portfolios. Contents loose as issued. -- HOUSE, Homer D. Wild Flowers. New York, 1934. 4o. Cloth. (7)