Epilobium brachycarpum C.Presl
Family: Onagraceae
annual willow-herb
[Epilobium hammondii T.J.Howell,  more...]
Epilobium brachycarpum image
from USDA Plants website  
Etymology: Epilobium: from 2 Greek words epi, "upon," and lobos, "a pod or capsule," as the flower and capsule appear together, the corolla being borne on the end of the ovary
Plants: annual forb; stems skin peeling near the bottom; taprooted
Conservation Status: Introduced - adventive