[The Rose Family in the Columbia River Gorge of Oregon and Washington]

Cinquefoils of the Columbia River Gorge of Oregon and Washington

The Genera Comarum, Drymocallis, and Potentilla

Graceful cinquefoli (Potentilla gracilis var. gracilis)

Graceful cinquefoli (Potentilla gracilis var. gracilis)

Marsh Cinquefoil, Purple Marshlocks: Comarum palustre (Synonyms: Comarum palustris var. villosum, Potentilla palustris, Potentilla palustris var. parvifolia, Potentilla palustris var. villosa, Potentilla palustris var. villosum) - Collected by Suksdorf in wetlands around Bingen, WA.

Valley Cinquefoil, Sharp-toothed Cinquefoil: Drymocallis convallaria (Synonyms: Potentilla arguta, Potentilla arguta ssp. convallaria, Potentilla arguta var. convallaria, Potentilla convallaria) - A collection from near Odell, OR in 1921.

Idaho Drymocallis, Sticky Cinquefoil: Drymocallis glabrata (Synonyms: Drymocallis glabrata, Potentilla glandulosa ssp. glabrata, Potentilla glandulosa ssp. intermedia, Potentilla glandulosa var. intermedia) - Not in the Gorge?

Greene's Drymocallis, Sticky Cinquefoil: Drymocallis glandulosa var. glandulosa (Synonyms:, Potentilla glandulosa ssp. glandulosa, Potentilla glandulosa ssp. typica, Potentilla glandulosa var. campanulata, Potentilla glandulosa var. glandulosa, Potentilla glandulosa var. incisa, Potentilla rhomboidea, Potentilla valida) - Herbage often sticky. Leaves pinnately compound with 5-9 leaflets. Petals light yellow (sometimes almost whitish) to lemon yellow, and either shorter than the sepals or longer, depending on the variety.

Sticky Cinquefoil: Drymocallis glandulosa var. reflexa (Synonyms: Drymocallis reflexa, Potentilla glandulosa ssp. reflexa, Potentilla glandulosa var. reflexa, Potentilla reflexa) - Not in the Gorge?

Austin's Drymocallis, Nevada Cinquefoil: Drymocallis lactea var. lactea (Synonyms: Drymocallis lactea var. austiniae, Potentilla glandulosa ssp. nevadensis, Potentilla glandulosa var. austiniae, Potentilla glandulosa var. nevadensis, Potentilla pumila) -

Rhomboid Sticky Cinquefoil: Drymocallis rhomboidea (Synonyms: Potentilla glandulosa ssp. globosa, Potentilla rhomboidea) -

Common Silverweed, Silverweed, Silvery Cinquefoil: Potentilla anserina ssp. anserina (Synonyms: Potentilla anserina var. anserina, Potentilla anserina var. concolor, Potentilla anserina var. sericea) - A grayish, silky-haired perennial which is somewhat strawberrylike. Typically prostrate with wide ranging stolons which root at the nodes. The leaves are basal, 10-30 cm long, and pinnately compound. The 15-25 leaflets are obovate to oblong in shape with sharply, coarsely toothed margins. Individual leaflets range from 1-3.5 cm long. The flowers are solitary at the nodes of the stolons or on naked stems from 3-10 cm long. The petals are yellow and 8-12 mm long The stamens number 20-25.

Biennial Cinquefoil: Potentilla biennis (Synonyms: Potentilla kelseyi, Potentilla lateriflora, Tridophyllum bienne) - Annual or biennial herb with an erect stem from 40-80 cm high. The leaves are mainly on the stems. The leaves are mostly pinnately compound with 3 (mostly) to 5 leaflets, the leaflets 1-4 cm long and rotund-obovate to oblanceolate in shape and coarsely toothed. The cymes are open and many flowered. Individual flowers have 5 yellow petals about half as long as the sepals. The stamens number either 10 or 15.

Drummond's Cinquefoil: Potentilla drummondii (Synonym: Potentilla anomalofolia) - Leaves pinnately compound with 5-11 leaflets, the leaflets each sharply and deeply cut into 1-5 subunits. Height from 30-60 cm.

Fan-leaf Cinquefoil, Fanfoil, Fan-foil, Fringe-leaf Cinquefoil, High Mountain Cinquefoil: Potentilla flabellifolia (Synonym: Potentilla gelida)- Plants of high altitude meadows. Leaves bright green with 3 wide leaflets on long petioles. Yellow petals longer than the sepals and have notches at the tip.

Graceful Cinquefoil: Potentilla gracilis var. gracilis (Synonyms: Potentilla longipedunculata, Potentilla macropetala) - Perennial herb from 30-60 cm high. Herbage varied, from green and nearly smooth to densely white haired. Leaves usually palmately compound (occasionally pinnately compound) with 5-7 leaflets which are 3-6 cm long. Leaflet margins are deeply toothed to incised deeply towards the midrib. Basal leaves have long petioles while the stem leaves are short stemmed. Flowers in cymes with 5 yellow petals which are roughly round to heart-shaped (notch in tip). Petals longer than the lanceolate sepals.

Norwegian Cinquefoil: Potentilla norvegica - Perennial herb from 20-60 cm high with leaves mainly found on the stem. Leaves usually ternate (3 leaflets) with each 2-3 cm long and each obovate to narrower in shape. Leaflets coarsely toothed. Flowers in cymes. Petals often shorter than the sepals.

Erect Cinquefoil, Sulphur Cinquefoil: Potentilla recta (Synonyms: Hypargyrium rectum, Potentilla recta var. obscura, Potentilla recta var. pilosa, Potentilla recta var. sulphurea, Potentilla sulphurea) - An Eurasian species. It's a perennial herb with erect stems from 30-80 cm high, the stems either simple or branched. The stems are very leafy with palmately compound leaves, each with 5-7 leaflets. The leaflets are oblanceolate, strongly veined, and 3-8 cm long, the teeth cutting about 1/2 way into the midrib. Inflorescence a large, many-flowered cyme with leafy bracts at the lower nodes. Petals yellow and obovate, equaling or up to 3 mm longer than the sepals. Stamens usually 25.

Riverbank Cinquefoil: Potentilla rivalis - An annual or biennial with spreading to erect stems from a strong taproot. Stems usually branched and flowering most of their length. Leaves compound pinnate with 3-5 leaflets. Petals yellow and about half as long as the sepals. Stamens number from 10-15.

Paul Slichter E-mail