Iris chrysographes is a perennial plant valued for its elegant, velvety dark-purple to near-black blooms and upright, sword-like foliage. In mature form, this species typically reaches about 18 to 24 inches in height, with flowering stems occasionally extending slightly taller under optimal conditions, while the clump itself spreads gradually to around 12 to 18 inches wide through short, creeping rhizomes. The leaves are narrow and arching, usually measuring 12 to 20 inches long and about ¼ to ½ inch wide, forming a neat, grassy fan that remains attractive through much of the growing season. Each flower, borne on slender stems, spans approximately 3 to 4 inches across, with falls (the lower petals) that are broad and slightly drooping, often marked by a subtle golden or yellow signal at the base. The flowering stems may branch lightly, producing multiple blooms per stem during late spring to early summer. The rhizomes themselves are relatively compact, typically ½ to 1 inch thick, growing just at or slightly below the soil surface, allowing the plant to slowly form dense colonies over time.