Simplestem Bur-reed, Simple-stem Bur-reed
Sparganium emersum
Synonyms: Sparganium angustifolium ssp. emersum, Sparganium chlorocarpum, Sparganium chlorocarpum var. acaule, Sparganium emersum ssp. acaule, Sparganium emersum ssp. emersum, Sparganium emersum var. emersum, Sparganium simplex, Sparganium simplex var. simplex

What appears to be simplestem bur-reed in wet meadows at an old reservoir about one mile upstream from Olive Lake, Umatilla National Forest.........July 28, 2013.
- 
What appears to be simplestem bur-reed in wet meadows at an old reservoir about one mile upstream from Olive Lake, Umatilla National Forest.........July 28, 2013.
Paul Slichter