[Wikipedia] Rarity, Conservation: Two subspecies of this plant are considered endangered. The nominate subspecies, Chloropyron maritimum ssp. maritimum, is listed as endangered by the State of California and the United States Government,[3] and is considered a Critically Imperiled subspecies by NatureServe.[4] Chloropyron maritimum ssp. palustre (Point Reyes bird's beak) is included in the California Native Plant Society Inventory of Rare and Endangered Plants of California,[5] and is considered an Imperiled subspecies by NatureServe. (link added by Mary Ann Machi)