KOSACE^. (rose familt.) 125 



i 1. MALUS, Toum. — Leaves simple 1 cymes simple and umbd-like: fimt fleshy, 

 globular, sunk in at the attachment of the stalk. (Apple.) 



1. P. coron&ria, L. (American Ceab-Applb.) Leaves ovate, often 

 rather heart-shaped, cut-serrate or lobed, soon glabrous ; styles woolly and united at 

 the base. — Glades, W. New York to ■Wisconsin and southward. May. — Tree 

 20° high, with few, but vety large, rose-colored fragratft blossoms, and translu- 

 cent, fragrant, greenish fruit. 



2. P. ang^nstifolia, Ait. (Nareow-lbaved Ckab-Apple.) Leaves 

 oblong or lanceolate, often acute at the base, mostly toothed, glabrous ; styles dis- 

 tinct. — Glades, from Pennsylvania southward. April. 



P. Malus, the Apple-tbeb, is often found in deserted fields and copses. 

 P. coMMtNis, the Peae-ieeb, represents the typical section of the genus. 



§ 2. ADENORACHIS, DC. — Leaves simple, the midrib beset with glands along 

 the upper side: cymes compound: styles united at the base : fruit berry -like, small. 



3. P. arbiitifdlia, L. (Choee-bbery.) Leaves oblong or obovate, 

 finely seiTate ; fruit pear-shaped, or when ripe globular. — Var. 1. eettbeo- 

 oIepa has the cyme and leaves beneath woolly, and red or purple fruit. Var. 

 2. MELANOCiEPA is nearly smooth, with black fruit. — Damp thickets, common. 

 May, June. — Shrub 2° - 10° high. Flowers white, or tinged with purple. 



^3. SORBUS, Toum. — Leaves odd-pinnate: cymes compound: styles separate: 

 fruit berry-like, small. 



4. P. Americana, DC. (Ameeican Moxjntain-Ash.) Leaflets 

 13 - 15, lanceolate, taper-pointed, sharply serrate with pointed teeth, smooth ; 

 cymes large and flat. — Swamps and mountain woods, N. England to Wiscon- 

 sin northward, and along the AUeghanies southward. June. — A slender shrub 

 or low tree, with white blossoms ; greatly prized in cultivation fpr its ornamen- 

 tal clusters of scarlet fruit (not larger than large peas) in autumn and winter. 



P. atjoupAeia, Gaertn., the cultivated Eueopban Mountain-Ash or Eow- 

 AN-iree, is known by its paler, shorter, and blunt leaflets, and larger fruit. 



18. AmEIiANCHIER, Medic. Junb-beret. 



Calyx 5-cleft. Petals oblong, elongated. Stamens numerous, short. Styles 

 5, united below. Fruit (pome) berry-like, the 5 cartilaginous carpels each di- 

 vided into 2 cells by a partition from the back ; the divisions 1-seedod. — Small 

 trees or shrubs, vrith simple sharply seirated leaves, and white flowers in ra- 

 cemes. .{Amdander is the popular name of A. vulgaris in Savoy.) 



1. A. Canadensis, Ton-. & Gray. (Shad-bush. Sekvice-beeet.) 

 Calyx-lobes triangular-lance-form ; fruit globular, purplish, edible (sweet, ripe 

 in June). — Along streams, &c. : common, especially northward. April, May. 

 — Varies exceedingly ; the leading forms are, — 



Var. Botryapium ; a. tree 10°-30° high, nearly or soon glabrous; 

 leaves ovate-oblong, sometimes heart-shaped at the base, pointed, very sharply 

 serrate ; flowers in long drooping racemes ; the oblong petals 4 times the length 

 of the calyx. (Pyrus Botryapium, Willd.) 



n* 



