[Wikipedia] Taxonomy, Hybridization, Bloom Period: It was named and described in 1870 by botanist Asa Gray after Josiah Gregg (1806 ? 1850), a merchant, explorer, naturalist, and author from the American Southwest and Northern Mexico, who found and collected the plant in Texas. It is closely related to, and frequently hybridizes with, Salvia microphylla. Despite the common name "autumn sage", it blooms throughout the summer and autumn.[2] (link added by Mary Ann Machi)