124 HANDBOOK 14 8, U.S. DEPARTMENT OF AGRICULTURE 



12. Bushy trees to 40 feet high, or tall shrubs; branches 

 wandlike, ascending; bark bronze, dark red to purplish 

 brown or gray, shiny, marked with elongated, brownish 

 pores (lenticels); twigs with mostly reddish or amber 

 colored resin glands; seed-producing catkins rather stout, 

 usually single, erect or drooping; "seeds" broadly 

 winged; wooded areas along streams; commonest birch 

 of e. Oreg., e. Wash. 



water birch (Betula occidentalis). 28 



12. Much-branched, spreading shrubs to 8 or 10 feet high; 

 brandies flexible; twigs dark reddish brown with whit- 

 ish, warty resin glands; seed-producing catkins rather 

 slender; "seeds" narrowly winged; often in dense 

 thickets in mountain bogs, e. Oreg., e. Wash. 



bog birch (Betula glandulosa). 



11* 



Bog birch 



F-494081 



28 A drooping-branched variety of water birch (Betula occidentalis Hook., var. 

 fecunda Fern., Rhodora 47:317. ' 1945.), with paired or clustered seed-producing 

 catkins and dark bronze bark, was originally described by Piper and Beattie in 

 The Flora of the Palouse Region, p. 55, 1901, from material growing on bprmgy 

 hillsides near Almota," Garfield Co., e. Wash., but was not given any name, 

 being merely the third "B". Perhaps this is the same as Guthrie birch [Beta la 

 guthriei Sudw., A New Western Birch. Amer. For. and For. Life 33 (4Ul):3So- 

 387. Mav 1927.), which Major Guthrie found in 1924, "in northeastern Oregon 

 growing along the Imnaha River and its tributary canyons from the mouth of 

 the river to a point 35 miles above, reaching elevations of from about 2.5UU to 

 4,500 feet." 



