162 ROSE FAMILY 



firm and often translucent in texture, never becoming mellow, calyx falls 

 off before maturity : b a c c a t a, having berries. 



Introduced from Europe and Asia. Native of Siberia. Manchuria and 

 the Himalaya region. 



Malus silvestris Miller 1768 Apple 

 Malus Malus (Linne) Britton 1897 

 Pyrus Malus Linne 1753 



A cultivated tree with spreading branches, sometimes reaching a height 

 of 10-15 meters (30-45 ft.) ; bark on mature trunks rough and gray; leaves 

 broadly ovate or rounded or cordate at the base, acute at the apex, dentate 

 or nearly entire, sometimes slightly lobed, glabrous or nearly so above, 

 pubescent and often woolly beneath, especially when young; flowers in 

 umbel-like corymbs, white or pink, 3.5-7 cm. broad; calyx tomentose; 

 pedicels stout, woolly, 2-3 cm. long; fruit 5-10 cm. in diameter: sil- 

 vestris, of the forest. 



Common fruit tree, sometimes escaped from cultivation. Numerous 

 •varities or races have been developed from this species through cultivation. 



Malus ioensis (Wood) Britton 1897 Wild Crab Apple 

 Pyrus ioensis (Wood) Bailey 1891 



A small tree, sometimes a shrub 2-6 meters (6-12 ft.) high; branchlets 

 sometimes hardened and thorn-like ; leaves oblong or ovate-oblong, usually- 

 narrowed at the base, doubly serrate or pinnately several-lobed, glabrate, 

 dull green and somewhat rugose above, pale and densely tomentose be- 

 neath, 2.5-5 cm. long; petioles woolly; flowers in corymbs, rose colored, 

 2.5-4 cm. broad, pedicels slender, tomentose, becoming 2.5-3.5 cm. long 

 in fruit; calyx lobes persistent; fruit green or yellowish green, 2-4 cm. 

 in diameter : ioensis, named from the original locality. 



Along edges of woods and thickets, common in the southeastern part 

 of the state, comparatively rare as far north as the Twin Cities. Dis- 

 tributed from 111. and Wis. to Minn., Kan. and ( Oklahoma. Flowers in 

 May, fruit ripe in October. 



Malus Soulardi ( Bailey) Britton Soulard's Crab Apple 



A hybrid between Malus silvestris and Malus ioensis, 

 reported to occur in a wild state from Minnesota southward. May pos- 

 sibly occur in the extreme southeastern part of the state. 



