[Wildflowers With 5 Petals West of the Cascade Mountains of Oregon and Washington]

The Rose Family West of the Cascade Mountains of Oregon and Washington


Ninebark: Physocarpus capitatus

I. Trees and Shrubs:

Serviceberries: The Genus Amelanchier -

Sylvan Goatsbeard, Bride's Feathers: Aruncus dioicus var. acuminatus (Synonyms: Aruncus dioicus var. pubescens, Aruncus sylvester, Aruncus sylvester var. acuminatus, Aruncus vulgaris) - An attractive erect shrub to 2 meters high with large compound pinnate leaves (3 times compound). The leaf margins are coarsely toothed and the leaflets end in a sharp point. Flowers tiny and white in sprays at the ends of the branches.

Mountain Mahoganies: The Genus Cercocarpus -

Cotoneasters: The Genus Cotoneaster -

Hawthorns: The Genus Crataegus -

Shrubby Cinquefoil: Dasiphora fruticosa (Synonyms: Dasiphora floribunda, Pentaphylloides fruticosa, Potentilla fruticosa) - A prostrate to erect shrub often used for landscaping. The leaves are pinnately compound with 5 narrowly elliptical leaflets from 1-2 cm long. The leaflets are covered with silky hairs. The flowers are showy and bright yellow, measuring up to 2.5 cm across.

Drummond's Mountain-avens, Yellow Mountain-avens: Dryas drummondii -

Queen of the Forest: Filipendula occidentalis -

Ocean Sprays: The Genus Holodiscus -

Luetkea, Partridge Foot: Luetkea pectinata (Synonyms: Eriogynia pectinata, Saxifraga pectinata, Spiraea pectinata) - A high-altitude perennial herb with somewhat woody stems. It spreads by rhizomes and stolons to form wide mats. The leaves are basal and deeply lobed at the tip. They are up to 2 cm long. The flowers are white and borne in a congested raceme at the stem tip.

Crabapples and Apples: The Genus Malus -

Indian Plum, Osoberry, Oso-berry: Oemleria cerasiformis (Synonym: Osmaronia cerasiformis) - Shrub to 10 feet tall. Small white flowers with 5 petals hang down from stem in clusters of 5-10 flowers. No stickers on the stems! Leaves elliptical, simple, and up to 6 inches long. Newly emerging leaves stand up off the stems like green rabbit ears.

Olympic Mountain Rockmat: Petrophyton hendersonii -

Pacific Ninebark: Physocarpus capitatus - Shrub to 12 feet. Flowers small, white, and arranged into spherical clumps. Leaves simple, and palmately lobed (typically with 3 lobes).

Bitter Cherries, Cherries, Laurels and Plums: The Genus Prunus -

Antelope Bitterbrush, Antelope Brush, Antelope-brush, Bitterbrush: Purshia tridentata (Synonyms: Kunzia tridentate, Purshia tridentata var. tridentata, Tigarea tridentate) -

Firethorns: The Genus Pyracantha -

Garden Pear, Common Pear, Domestic Pear: Pyrus communis -

Roses: The Genus Rosa -

Blackberries, Brambles and Raspberries: The Genus Rubus -

Mountain Ash: The Genus Sorbus -

Spiraea: The Genus Spiraea -

II. Herbaceous Wildflowers:

Biddy-biddy: Acaena novae-zelandica -

Common Agrimony, Tall Hairy Agrimony: Agrimonia gryposepala -

Western Lady's-mantle: Aphanes occidentalis (Synonyms: Alchemilla occidentalis, Aphanes arvensis, Aphanes macrosepala) - Probably an introduced weed, it is a low, spreading annual with freely branched stems from 2-10 cm long. The leaves are short-petioled with simple but deeply lobed blades from 4-8 mm long. The flowers are borne along much of the length of the stems, with 5-15 common at each node.

Marsh Cinquefoil, Purple Cinqefoil, Purple Marshlocks: Comarum palustre (Synonym: Potentilla palustris) -

Indian Strawberry, False Strawberry, Mock Strawberry, Mock-strawberry: Duchesnea indica -

Strawberries: The Genus Fragaria -

Avens: The Genus Geum -

Horkelias: The Genus Horkelia -

Cinquefoils: The Genus Potentilla -

Burnets: The Genus Sanguisorba -

Sibbaldia, Creeping Sibbaldia: Sibbaldia procumbens (Synonyms: Potentilla anglica, Potentilla procumbens) - ?

Paul Slichter E-mail