Lavandula dentata (Cultivated- USA)
Lamiaceae & Verbenaceae Week: Lamiaceae - French Lavender: Lavandula dentata- French Lavender
San Francisco bot. garden Jun 2011. 
Lavandula dentata
SFO Botanical garden

Lavandula dentata from Fremont, California-GSDEC2016/09 : 2 posts by 2 authors. Attachments (2)
Lavandula dentata L.
Syn: L. santolinaefolia Spach
Aromatic woody shrub, up to 1 m tall with green to grey-green indumentum. Leaves linear lanceolate with shallow regular rounded lobes;  Flowers violet blue to mauve, hidden somewhat by enlarged bracts on an elongated  spike 3-6 cm long spike, upper bracts sterile. 
Photographed from a Nursery in Fremont, California