BROADLEAVED TREES OF YOSEMITE NATIONAL PARK 39 



11. Leaves circular or almost so; margin with small teeth. Attractive white flowers approxi- 

 mately one inch in diameter. Fruit (^^ to 1 inch long) deep purple-red in color and tart 



to taste 



Klamath plum (see page 22) 



11. Leaves not circular but ovate (widest below middle) or oblong in outline 12 



12. Margin of leaves coarsely toothed; prominent veins extending to leaf margins 13 



12. Margin of leaves finely toothed; leaves oblong in outline. White flowers (in spring) 



borne in compact, elongated clusters. Fruit a blackish berry 



Western chokecherry (see page 21) 



13. Leaves ovate in outline (1 to 2 inches wide, 2 to 3 inches long). Staminate flowers, com- 

 mon in spring, in elongated pendent, tassel-like catkins. Seeds borne in small, distinctive, 

 green (black after maturity) "cones." Bark steel gray in color and usually smooth. Common 



along streams 



White alder (see page 12) 



13. Leaves oblong in outline (1 to 3 inches wide, 3 to 5 inches long), doubly toothed on mar- 

 gin, and lopsided at base. Flowers produced in loose clusters before unfolding of leaves. 

 Seeds flat and entirely surrounded by thin, papery wing. Bark dark gray and ridged. 



An introduced tree 



American elm (see page 32) 



14. Leaves compound 15 



14. Leaves not compound 16 



15. Leaves palmately compound with five to seven leaflets, each three to seven inches long. 

 Flowers in showy, white, elongated clusters. Fruit a buckeye. Rare in park but common 



along approach roads to park from San Joaquin Valley 



California buckeye (see page 27) 



15. Leaves pinnately compound. Seeds with elongated wings, borne in bunches. Very rare in 

 park but found along lower parts of western park boundary; will be noted in vicinity of 



El Portal 



Oregon ash (see page 29) 



16. Leaves "maple-like", palmately divided into three to five lobes; winged seeds pro- 

 duced in pairs 17 



16. Leaves not divided; oblong in outline. Large white blossoms conspicuous in spring; 



clusters of bright red seeds conspicuous in fall 



Pacific dogwood (see page 25) 



17. Leaves small, one to three inches wide; leaf stems occasionally red; winged seeds rose- 

 red before maturity, changing to russet brown, about one inch long. Usually a tall shrub 



in gravelly to rocky soils in protected locations 



Rocky Mountain maple (see page 24) 



17. Leaves larger than above at maturity. Seeds larger. Flowers yellow-green in color 18 



18. Leaves large, sometimes twelve inches wide; fragrant yellow flowers in pendent, 

 compact clusters (racemes). Seeds large, one to one and one-half inches long includ- 

 ing the wing. The common maple of this region. 



Big leaf maple (see page 23) 



18. Leaves 1 to 3 inches wide at maturity; yellow-green flowers in loose, open clusters 

 (corymbs). Seeds, including wings, rarely longer than one inch. Uncommon intro- 

 duced tree 



Sugar maple (see page 35) 



