[Cinquefoils: The Genera Comarum, Dasiphora, Drymocallis and Potentilla in the Cascade Mountains of Oregon and Washington]

Erect Cinquefoil, Sulphur Cinquefoil

Potentilla recta

Synonyms: Hypargyrium rectum, Potentilla recta var. obscura, Potentilla recta var. pilosa, Potentilla recta var. sulphurea, Potentilla sulphurea

Close-up of the flower of Erect Cinquefoil, Sulphur Cinquefoil: Potentilla recta (Synonyms: Hypargyrium rectum, Potentilla recta var. obscura, Potentilla recta var. pilosa, Potentilla recta var. sulphurea, Potentilla sulphurea)

The photo above shows a close-up of the light yellow flower of erect cinquefoil. Note that the broad, heart-shaped petals have a deep notch at their tip and are much longer than the sepals. Photographed at the northeastern entrance to Trombetta Canyon in northeastern Washington........June 24, 2006.

Ventral surface of a stem leaf of Erect Cinquefoil, Sulphur Cinquefoil: Potentilla recta (Synonyms: Hypargyrium rectum, Potentilla recta var. obscura, Potentilla recta var. pilosa, Potentilla recta var. sulphurea, Potentilla sulphurea)

The photo above shows the underside of the palmately compound leaves of erect cinquefoil. Note the greenish appearance of the underside of the leaflets, the long spreading hairs from the main veins, and the deeply incised margins of the leaflets. Photographed at the northeastern entrance to Trombetta Canyon in northeastern Washington........June 24, 2006.

Calyx and bracts of Erect Cinquefoil, Sulphur Cinquefoil: Potentilla recta (Synonyms: Hypargyrium rectum, Potentilla recta var. obscura, Potentilla recta var. pilosa, Potentilla recta var. sulphurea, Potentilla sulphurea)

The photo above shows a close-up of the underside of the flower of erect cinquefoil. The petals are clearly about twice as long as the sepals. Photographed at the northeastern entrance to Trombetta Canyon in northeastern Washington........June 24, 2006.

Erect Cinquefoil, Sulphur Cinquefoil: Potentilla recta (Synonyms: Hypargyrium rectum, Potentilla recta var. obscura, Potentilla recta var. pilosa, Potentilla recta var. sulphurea, Potentilla sulphurea)

The photo above shows the leafy stem of erect cinquefoil with the stem leaves held close to the stem. Note the large, leafy pair of stipules at the base of each palmately compound leaf. Photographed at the northeastern entrance to Trombetta Canyon in northeastern Washington........June 24, 2006.
Paul Slichter