Dune Knotweed

(Polygonum paronychia)
 
Dune Knotweed
Dune Knotweed at Lobos Creek dunes.
Will Elder, NPS
 

Origin Of Genus Name: Polygonum is Greek for "many knees."

Presidio Locations: Found on coastal dunes and dune scrub.

Range In State: Central to northern California coast. The Presidio is the type locality for this species.

Description: This native, low growing shrub has white or pink flowers and branches tipped with rounded, needle-like leaves. Blooms June to August.

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Did You Know?

Jonathan Letterman

Major Jonathan Letterman--after whom the hospital at the Presidio was renamed in 1911--was the medical director of the Army of the Potomac. A founding father of military medicine, Letterman organized forward first-aid stations, mobile field hospitals, and ambulance services during the Civil War.