SAPINDACE^ 



Introduced from Central Europe ; extensively planted, seeding freely in 

 Britain ; often called the Great Plane, and known in Scotland as the Plane ; 

 ordinarily lives 150-250 years; growth rapid. 



Autumn leaves often disfigured by black blotches of a fungus (Rhytisma 

 acerinum). Leaves devoured by Cockchafer (Mehlantha vulgaris). Globular 

 pimple-galls on foliage produced by a Mite (Phyllocoptes acericola). 



RED MAPLE, Acer rubrum. 



Parks. Need fairly moist soil somewhat sheltered. March, April. 



Flowers crimson or scarlet, appearing before leaves, in sessile corymbose 

 clusters, lateral ; Sepals oblong, obtuse ; Petals narrowly oblong ; Stamens 3-8 ; 

 Fruit a samara, |—1 in. long ; wings straight, extended, small, smooth, bright 

 red, maturing in spring ; pedicels elongated. 



Leaves palmate, 5-lobed, cordate at base, deeply and unequally serrated 

 sinuses acute, glabrous and bright green above, downy and glaucous beneath, 

 3^ ins. x 3^ ins. petioles, slender, reddish. Autumn tints red and yellow. 



A deciduous tree, 30-40 ft.; Branches diverging, slender, red; Trunk smooth ; 

 Twigs red ; Bark smooth, flaky ; Wood hard, fine-grained, not strong, light 

 reddish-brown ; little value. 



Native of N. America ; introduced from Canada, 1G56. 



SUGAR MAPLE, Acer saccharinum. 



Thrives in deep, free, rich soil. April, May. 



Flowers greenish-yellow, small, monoecious or dioecious, unfolding before 

 leaves ; Inflorescence a drooping corymb ; peduncle short, pedicels pilose ; 

 Calyx 5-partite; Petals 0; Stamens 7-8, filaments slender, glabrous; Ovary 

 obtusely 2-lobed, pale green, hairy ; styles united at base ; Fruit a samara ; 

 wings small, falcate, smooth, diverging, pubescent when young ; pedicels 

 elongated ; ripening before leaves. 



Leaves cordate, variable, palmately 5-lobed ; lobes sinuate, acuminate, 



03 F 2 



