208 CLASS XII. ORDER IV. 



Syn. Mespilx's Canadensis, «. Mx. 



Aronia ovalis. Pers. 



Amelanchier ovalis. De Cand. 

 This species aud the two following were considered by Mi- 

 chaux as varieties only. But though closely allied, they differ 

 considerably in habit. The present is a shrub of moderate size, 

 very common in swamps, and conspicuous for its white flowers 

 in the early part of May. Leaves oblong, serrate, acute, very 

 downy and whitish underneath when young, but glabrous when 

 old. Flowers in long racemes, the pedicels and gerras downy, 

 the tips of the calyx smooth. Petals oblong-obovate. Fruit dark 

 blue, of the size of whortleberries, pleasant to the taste, ripe in 

 June. 



Pyrus botryapium. Wdld. Wood Pyrus. 



Leaves ovate, sliarply serrate, acute, glabrous; 



flowers racemed; petals linear; calyx mostly smooth. 



Syn. Mespilus Canadensis, ^1 Mx. 



Mespilus Arborea. Mx. f. 



Aronia botryapium. Pers. 



Amelanchier botryapium. De Cand. 

 This is a small tree found in upland woods. Leaves ovate, 

 sometimes cordate, finely and acutely toothed, very acute, gla- 

 brous both sides. The racemes are shorter and more spreading 

 than in the foregoing species with from four to seven flowers. 

 Peduncles brownish, smooth. Calyx smooth with the segments 

 downy within. Petals white, linear-obovate, more spreading 

 than in P. Ovalis. — Roxbury, Brookline. — May. 



Pyrus sanguinea. Pnrsh. Round leaved Pyrus. 



Leaves oval, obtuse, finely serrate, subeordate at 

 base; racemes few flowered; calyx glabrous ; petals 

 linear, obtuse. 

 Syn. Amelanchier sanguinea. De Cand. 



I have specimens agreeing with the above character, formerly 

 collected in the western parts of the state, from trees of middling 

 height. — May. 



