[The Buttercups of the Columbia River Gorge of Oregon and Washington]

Undescribed Buttercup

Ranunculus glaberrimus var. ?

or a hybrid between R. triternatus and Ranunculus glaberrimus ?

Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

A voucher specimen of an undescribed buttercup as seen in the Klickitat Wildlife Area..........March 21, 2014.

Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Habitat of Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

An undescribed buttercup as seen in the Klickitat Wildlife Area..........March 21, 2014.


Flower and nectary of Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

A close-up of the petals of the mystery buttercup. Note the shallowly notched nectary.

Maturing achenes of Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Petal and nectary of

Close-ups of the maturing achenes as well as a petal. Note the deeply grooved nectary at the base (upper portion of the petal). Photographed April 23, 2009.

Flower size of Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

A close-up of the underside of the flower of this mystery buttercup. Note the large size of the flower where the petals can measure over 10 mm in length.

Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

Note the trifoliate leaves as well as the glabrous leaves and stems. Each leaflet is shallowly to deeply 3-lobed or parted.

Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?


Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?


The Dalles Mt. Buttercup, Obscure Buttercup: Ranunculus trisectus (Synonym: Ranunculus reconditus) - Sagebrush Buttercup: Ranunculus glaberrimus

Comparison photos to the Dalles Mt. buttercup (Ranunculus triternatus - left) and sagebrush buttercup (Ranunculus glaberrimus - right). Click each photo to see an enlarged view (2x).


Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ? - Mystery Buttercup possibly Ranunculus trisectus   formerly Ranunculus reconditus   or a hybrid between R. trisectus and Ranunculus glaberrimus ?

An undescribed buttercup as seen in the Klickitat Wildlife Area..........March 1, 2015.

Paul Slichter