[The Birch Family West of the Cascade Mountains of Oregon and Washington]

Birches West of the Cascade Mountains of Oregon and Washington

The Genus Betula

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River birch blooming on the east bank of the Deschutes River along the Steelhead Falls Trail, Steelhead Falls Wilderness Study Area.......April 25, 2018. The male catkins are at the branch tips and are pendant. The female catkins are on lateral shoots behind the branch tip with leafy bracts at their tips. Note the red styles on the female catkins.

Bog Birch, Dwarf Birch, Resin Birch, Scrub Birch, Swamp Birch: Betula glandulosa (Synonyms: Betula crenata, Betula glandulosa var. glandulosa) -

Red Birch, River Birch, Spring Birch, Water Birch: Betula occidentalis (Synonyms: Betula beeniana, Betula fontinalis, Betula fontinalis var. inopina, Betula microphylla var. fontinalis, Betula occidentalis var. fecunda, Betula occidentalis var. inopina, Betula occidentalis var. occidentalis, Betula papyrifera ssp. occidentalis, Betula papyrifera var. occidentalis) -

Canoe Birch, Paper Birch, Western Paper Birch, White Birch: Betula papyrifera (Synonyms: Betula alba var. commutata, Betula montanensis, Betula papyrifera var. commutata, Betula papyrifera var. subcordata) -

European Birch, European Weeping Birch, European White Birch, Weeping Birch: Betula pendula (Synonym: Betula verrucosa) -

Gray Birch, Grey Birch: Betula populifolia -

Downy Birch, Hairy Birch, European White Birch, Moor Birch: Betula pubescens ssp. pubescens -

Bog Birch, Dwarf Birch, Swamp Birch: Betula pumila (Synonyms: Betula borealis, Betula glandulifera, Betula glandulosa var. glandulifera, Betula glandulosa var. hallii, Betula hallii, Betula nana var. glandulifera, Betula pubescens ssp. borealis, Betula pumila var. glabra, Betula pumila var. glandulifera, Betula pumila var. renifolia) -

Paul Slichter E-mail