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Fiv.Lu Manual 



C In' r lies. 



Prunus virginjana L. r.lack Cherry. A large tree 

 with rough, black, flak}- hark ; drupe globose, dark-purple 

 or black, sweet but slightly astringent. Leaves oval, oval- 

 lanceolate, or ovate, acuminate or acute, serrate with appressed 

 teeth. Leaves very poisonous to cattle, especially when half- 

 wilted. Kernels very poisonous. Wood rather heavy, hard, 

 strong, of fine texture, of a brown or reddish color; niucli 

 used in cabinet-work and interior finish, especially in cars 

 and boats, also used in turnery. Self-prunes twigs by means 

 of cleavage planes in basal joints. Ont. to Fla., N. Dak., Kan., 

 Tex., and Ohio. 



2. Prunus nana Du Roi. Choke Cherry. A shrub or 

 small tree with gray bark. Leaves obovate or broadly oval, 

 abruptly acute or acuminate at the apex, rounded at the 

 base, serrulate with slender teeth, glabrous or nearly so. 

 Drupe, red to nearly black, sometimes yellow, very astringent, 

 not edible. Leaves poisonous ; kernels probably poisonous. 

 Self-prunes leafy fruiting branches. Along river banks and 

 in reeky places. Xcwf. to Man.. Br. Col.. Ga., Neb.. Tex., 

 Colo., and Ohio. 



:]. Prunus mahaleb L. Mahaleb Cherry. A small tree 

 with pale smooth bark. Leaves ovate, abruptly acute at the 

 apex, rounded or slightly cordate at the base, denticulate, 

 glabrous, fragrant. Drupes with thin flesh and slightly flat- 

 tened stone. From Europe. Conn, to Ont., N. Y. to Ohio 

 ind Kan. 



4. Prunus Pennsylvanica L. f. Red Cherry. A .small 

 tree with sour globose, red drupes. Leaves oval or lanceolate, 

 acute or acuminate, mainly rounded at the base, glabrous, 

 serrulate. Leaves poisonous : kernels probably poisonous. In 

 rocky woods. Xewf. to Ga., west to Rocky Mts. 



'}. Prunus avium L. Sweet Cherry. A medium-sized 

 tree with globose, black or dark red, sweet, edible drupes. 

 Leaves ovate, oval, or slightly obovate, abruptly short-acu- 

 minate, irregularly serrate-.. Native of Europe. Ont. to Mass., 

 Ohio and Vn. 



(i. Prunus cerasus L. Sour Cherry. A small tree 

 with glol)ose, red or reddish-black, sour, edible drupes. 

 Leaves ovate or ovate-lanceolate, abruptly acute or acuminate. 



