MALACEAE (APPLE FAMILY) 133 



A. Leaves pinnately compound. SORB0S l,p. 133) 



AA. Leaves simple. 

 B. Leaves linear-lanceolate to oblanccolate; plant j-2 m. high; flowers 1-2 in 

 a cluster. E. — (Apparently Gk. per = through, u. = without, phyllon = a 

 leaf; hence through-absence-of-leaves.) Peraphyllum ramosissimum 



BB. Leaves wider; plant usually taller; flower clusters usuaUy larger. 

 C. Smaller branches with stout thorns; flowers in corymbs; fruit with stony 

 carpels. CRATAEGUS (p. 134) 



CC. Plant without thorns; fruit with papery carpels. 

 D. Flowers in corymbs; fruit yeUowish green to red, having the appearance 

 of an apple. PYRTJS (p. 133) 



DD. Flowers in racemes; fruit black or purplish, having the appearance of a 

 berry. AMELANCHIER (p. 133) 



SORBUS (Mountain Ash) 



Shrubs or small trees. Leaves odd-pinnate, deciduous. Flowers small, 

 in terminal compound cymes. Carpels 3-5, coriaceous, i-seeded. Fruit 

 small, globose or pyriform. — (A Latin name for the service tree, Pyrus 

 domestica.) 



A. Leaflets dull, serrate only near the apex; fruit purple, glaucous. W. C. E. 



S. occidentalls 

 AA. Leaflets shining, serrate from near the base; fruit coral-red. W. C. E. 



S. sitchensls 

 PYRUS (Apple) 



Trees, small. Leaves deciduous, more or less serrate, sometimes some- 

 what 3-lobed in ours. Flowers white to pink. Calyx tube urn-shaped. 

 Styles 5, more or less united at base. Carpels 5, 2-seeded, wholly covered 

 by the adnate cal3rx tube. Fruit globose or oblong or pyriform, depressed 

 at both ends, acid. — (The Latin name of the pear.) 



A. Fruit widest between the middle and the stem end, without grit cells. 

 B. Leaves often somewhat 3-lobed, white-pubescent beneath; fruit 8-12 mm. wide, 

 iS-20 mm. long. W. P- rivularis (wild crab apple) 



BB. Leaves not lobed; fruit larger. 

 C. Leaves glabrate; calyx lobes glabrate outside; fruit 3 cm. or less wide. W. E.i 



P. baccata (Siberian crab)' 



CC. Leaves white-pubescent beneath; calyx lobes white-pubescent outside; fruit 



mostly larger. W. E. — Many varieties. P. malus (cultivated apple) 



AA. Fruit widest between the middle and the flower end, with grit cells. W. E. — 



Many varieties. P. communis (cultivated pear) 



AMELANCHIER (Service Berry) 



Shrubs or small trees. Flowers white, in small racemes. Styles 3-5. 

 Carpels 3-5, incompletely 2-celled by a partition from the back, i-seeded, 

 wholly covered by the adherent calyx. Fruit small, berry-like, black or 

 purplish, edible, sweet. — (The French name for a cultivated Hawthorn.) 

 Fruit edible. 



