ORTHROSANTHUS. These are southern hemisphere relatives of our sisyrinchiums, quite similar in appearance. They are clumping perennials with grasslike, dark green leaves. During their blooming season, which varies according to species, they carry many showy 6-parted blossoms, mostly in blue to lavender shades, in bracted clusters along erect stems. They are beautiful subjects for sunny banks, rock gardens and containers. Sun, well drained soil, moderate watering. The following should be hardy to 20oF or less.
chimboracensis ssp. centroamericanus. Material of this plant was generously provided by the U.C. Botanic Garden in Berkeley. It is one of the most beautiful of all the irids. The plant grows 1'-1½' tall, making impressive clumps. It blooms for several weeks each year beginning in early summer, with many pale blue flowers, 1½" or more broad opening in succession.