Kew 250 Logo
Boraginaceae: Plagiobothrys mollis

John Thomas Howell, 12197


Plagiobothrys mollis (A.Gray) I.M. Johnston var. vestitus (Greene) I.M. Johnston

Original Distribution

U.S.A.: California: San Francisco Bay Area (near Petaluma, South Sonoma County)


Wet areas in the valley and foothills grasslands or possibly coastal march margins, below 50-meter altitude.

Extinction Data

1997 IUCN Red List of Threatened Plants


Perennial, hairs dens, long soft spreading. Stem decumbent, 1-3 dm, rooting at the nodes; Leaves cauline, lower 4-8 mm long; Inflorescences bracts absent; Flowers calyx 4-5 mm long; corolla 5-10 mm wide. Fruit nutlet brown, general narrower than interspaces +1.5 mm long, ovoid; ribs on back netted; scar lateral near middle, ovate to triangular.

Number of Specimens at Kew


Specimen Type (Y/N)


Kew Herbcat Barcode Number



John Thomas Howell

Collector Number


Date Collected

15th June 1934

Information Sources

Hickman, J.C. (ed.) (1993). The Jepson Manual. University of California Press, Berkeley. Smith, J.P. & Berg, K. (1988). Inventory of rare and endangered vascular plants of California. California Native Plant Society, Sacramento. Pp. 96. Walter, K.S. and Gillett, H.J. (eds) (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre IUCN The World Conservation Union, Gland, Switzerland and Cambridge, UK.