130 Class XII. Order IV. 



PYRUS BOTRYAPIUM. Willd. June berry, 



Leaves oblong-elliptic, pointed, smooth ; flow- 

 ers racemed, petals linear lanceolate, germs pubes- 

 cent, segments of the calyx glabrous. Willd. 



Syn. MESPILUS CANADENSIS. Lin. Mich, 

 MESPJLUS ARBOREA. Mich.f. 



This species commonly attains the height of a small tree, 

 and is very conspicuous when in flower in the early part of 

 May. Leaves oblong, varying in width, sharply serrate, acute. 

 Flowers white, in long, downy racemes. Fruit dark blue, of 

 the size of whortleberries, pleasant to the taste. Low woods 

 and swamps, Berries ripe in June. 



149. SPIRAEA. 

 SPIRJEA ALBA. Ehr. White Spiraea. Meadow sweet. 



Leaves wedge-lanceolate, serrate, glabrous ; 

 flowers panicled. 



Syn. SPIRAEA SALICIFOLIA. Mich. 



A slender shrub three or four feet high, bearing large, ter- 

 minal bunches of white flowers. Stems smooth, reddish. 

 Leaves broad lanceolate, somewhat obtuse, smooth and thin, 

 acutely serrate, tapering at base. Panicle terminal, composed 

 of small flowering, branches at the top of the stem, and from the 

 axils of the upper leaves. Flowers small, crowded. Meadows 

 and wet pastures. July, August. 



SPIR.EA TOMEXTOSA. L. Downy Spircea. Hardhack. 



Leaves lanceolate, unequally serrate, downy 

 underneath ; flowers twice racemed. Willd. 



A very common shrub in pastures and low grounds, about 

 the size of the last. Among its purple flowers the dead tops 

 of the last year's fructification are conspicuous. Leaves nearly 



