104 POMACE^E. 



but according to Dr. Darlington it was long since introduced into Chester county, 

 Penn., from the neighborhood of Washington city, and is there extensively used 

 in hedging. It is known by the name of Washington Thorn. 



7. C. Oxycantha Linn. : leaves obovate-cuneate, 3 5-lobed, incised and 

 serrate, smoothish, shining ; petioles and calyx destitute of glands ; seg- 

 ments of the calyx acute or acuminate ; styles 1 3 ; fruit ovoid. 



Road sides, &c. N. S. June. Tj Stem 4 10 feet high, much branched ; 

 the branches armed with sharp and short tapering thorns. Leaves variously 

 lobed, paler beneath. Flowers white, in corymbs. Fruit small, purple when 

 mature. Introduced from Europe. English Thorn. Hawthorn. 



2. AMELANCHIER. D. C. June Berry. 

 (Amelancier is said to be the Savoy name for A. vulgaris.) 



Calyx 5-cleft. Petals ovate-oblong or oblanceolate. Stamens 

 many, rather shorter than the calyx. Styles 5, somewhat 

 united at base. Pome, when mature, 3 5-celled. 



1. A. Botryapium D. C. : unarmed ; leaves cordate, oval, conspicuously 

 acuminate, pubescent when young, smooth when mature ; flowers in loose 

 racemes, appearing before the leaves ; petals linear-lanceolate, four times as 

 long as the calyx. A. Canadensis var. Botryapium Torr. < Gr. Aronia 

 Botryapium Pers. Pyrus Botryapium Linn. 



Rocky woods. Throughout the U. S. May. A small tree. Flowers large, 

 white. Fruit dark purple. Common June-berry. Shad-bush. 



2. A. ovalis D. C. : leaves roundish-elliptic or oblong-oval, acute or acu- 

 minate, serrate, smooth when mature ; flowers in compact racemes ; petals 

 obovate, oblong. A. Canadensis var. oblongifolia and rotundifolia Torr. 

 <$ Gr. Aronia ovalis Pers. Pyrus ovalis Linn. 



Near swamps. Can. to Car. N. to lat. 62. May. A small shrub. Flowers 

 in racemes. Fruit small, nearly black, eatable. Supposed by some botanists 

 to be a variety of the preceding, but I am still inclined to believe it distinct. 



Medlar Bush. 



3. A. sanguinea D. C. : leaves oval, obtuse at each end, mucronate, with 

 very slender serratures, subcordate at base ; racemes few-flowered ; calyx 

 smooth ; petals linear, obtuse. Pyrus sanguinea Pursh. Aronia sangui- 

 nea Nutt. 



Can and Mass. W. to Columbia river. Pursh. May. A small tree with 

 blood-red branches. Berries red, eatable. Pursh. Torrey & Gray refer this 

 plant, with a mark of doubt, to their A. Canadensis ; while Nuttall, Hooker and 

 Lindley, consider it distinct. Red June-berry. 



3. PYRUS. Linn. Pear. Apple. 

 (The Latin name for the pear ; said to be derived from the Celtic peren.) 



Calyx with the tube urceolate, and the limb 5-lobed. Petals 

 roundish. Styles often 5, rarely 2 3. Pome closed, 5-celled, 

 with a cartilaginous putamen; cells 2-seeded. Seeds with a 

 cartilaginous covering. 



