Trichostema ruygtii, with the common name Napa bluecurls, is a species of flowering plant in the mint family. Jepson: Trichostema ruygtii It was first described to science in 2006.Lewis, H. (2006). Trichostema ruygtii (Lamiaceae): A new species from Napa County, California. Madroño 53:282–287.
Distribution The plant is endemic to California in the northern San Francisco Bay Area, where it is known from the southern Mayacamas Mountains, in Napa County and into western Solano County.
Its habitats include chaparral, oak woodland, mixed evergreen forest, and vernal pools in grasslands.The Nature Conservancy: Trichostema ruygtii
Description Trichostema ruygtii is an annual herb that grows under in height. The stems and lanceolate leaves have short hairs.
The flowers are a pale lavender in color. Its bloom period is June to October.
Conservation The species is threatened by agriculture and development. Trichostema ruygtii is listed as a Critically endangered species on the California Native Plant Society Inventory of Rare and Endangered Plants.California Native Plant Society Inventory of Rare and Endangered Plants (online edition, v8-02) . accessed 15 February 2016.
References
External links Calflora Database: Trichostema ruygtii (Napa bluecurls) Jepson Manual eFlora (TJM2) treatment of Trichostema ruygtii UC Photos gallery: Trichostema ruygtii