310 ROSACEJE. 



or berry-like, the 2 to 5 carpels of a cartilaginous texture, 

 each 2-seeded. — Trees or shrubs with simple or pinnate 

 leave*, and handsome white or flesh-colored flowers, in cymore 

 corymbs. 



* Sorbus, Tourn. Petals spreading. Styles 2 to 5. Leaves pinnate. 



1. P. Americana, DC. Mountain Ash. 



Leaflets 13 to 15, oblong-lanceolate, pointed, sharply serrate with pointed teeth, 

 common petiole smooth when full grown ; flowers in large compound cymes; fruit 

 globose. 



Swamps and mountain woods. May. A large shrub or low tree, 15 to 20 feet 

 high, with the younger branches pubescent. LeavcslO to 15 inches long. Leaflets 

 2 to 4 inches long, ~% to 1 wide, sub-opposite, often acute. Hovers small, white, 

 very numerous. Fruit scarlet, very showy, remaining through the winter, some- 

 what acid. A low, smaller fruited variety is found on the Allcghenies. 



* * Adeuopachis, DC. Petals spreading, with claws. Styles 2 to 5. Leaves iim 

 pU, the midrib beset with glands along the upper side. Fruit berry-like. 



2. P. ARBUTIFOLIO, L. Choke Berry. 



Leaves obovate, oblong or lanceolate, acute or acuminate, crenate-serrate, imooth 

 above, veiny beneath, with 2 rows of glands along the midrib; flowers in corymbs; 

 fruit nearly globose. 



1. Yar. melakocarpa is nearly smooth, with purplish-black fruit. 



Damp thickets ; common. May. A slender branching shrub 2 to 5 feet high. 

 Leaves 1 to 2 inches long, ]/ 2 to 1 wide, the under surface usually very tomentose. 

 Flowers numerous, nearly black, sweetish and astringent, ripe in Aug., Sept. 



*** Malus, Tourn. Petals spreading, fiat. Styles 5, nearly united. Leaves simph 

 %oiihout glands. 



3. P. CORONARIA, L. Sweet-scented Crab Apple. 



Leaves broad ovate, rounded at base, cut serrate or lobed, smocthish; corymbs 

 terminal, few-flowered, on long peduncles ; styles woolly and united at base ; fruii 

 globose, depressed. 



Borders of woods ; common. May. A small tree 10 to 20 feet high, with spreading 

 branches. Flowers large, fragrant, pale rose-color, in loose corymbs of 3 to 10. 

 Fruit 1% inches in diameter, pale-grecnish-yellow, firm and hard, very acid, 

 translucent and fragrant when ripe. ^ept. 



4. P. ANGUSTIFOLIA, Ait. Karroic-leaved Crab Apple. 



Leaves oblong, or lanceolate, often acute at the base, crenate-dentate or almost 

 entire, smooth, shiny above; flowers in ccrymbs; styles smooth and distinct; ptd> 

 eels smooth. 



Woods. April — May. A tree 15 to 20 feet high resembling the la6t, but with 

 smaller leaves and fruit. 



5. P. Malus, L. Common Apple Tree. 



Leaves ovate, or oblong-ovate, serrate, acute cr short acuminate, purcjegnt 

 above, tomentose beneath, petiolate, corymbs sub-umbellate; pedicels and calyx 

 villose-tomentose ; petals with short claws: styles 5, united and villose at base; 

 pome globose. Native of Europe, and almost naturalized with us. Probably 

 nearly 1000 varieties are cultivated in the United States. 



6. P. COMMUNIS, L. Pear Tree. 



Leaves ovate-lanceolate, sub-serrate, smooth above, pubescent beneath, acute o* 

 ncuminate; corym bs racemose; calyx and pedicels pubescent ; styles 5, distinct and 

 villose at base; pom e pyriform. Native of Europe. Flowers white. Numerou* 

 varieties are cultivated in the United States. 



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