Flora Pittsburghensis

Biennial Gaura (Oenothera gaura)

Photographed August 17.

A tall member of the Evening Primrose family (Onagraceae) distinguished by its spindly flowers with prominent stamens. It was formerly classified in its own genus as Gaura biennis. It is not a common flower around here, but it is very adaptable in its habitat. These were blooming in the Kane Woods Nature Area, Scott Township, in a clearing near a woodland stream. Some botanical sources, on the other hand, say that Gauras like dry soil best.


Family Onagraceae (Evening Primrose Family).   |   Index of Families.