84 DIALYPETALOUS EXOGENS 



with stout thickish acute thorns 1 to near 2 inches in length, and mostly a little 

 curved downwards. Leaves about 2 or 2% inches long, cut into 3 or 4 small angu- 

 late lobes on each side ; petioles % of an inch to an inch and half in length ; stipules 

 lance-linear, glandular-serrate. Corymbs terminating the young short branches. 

 Fruit 1 third to near half an inch in diameter, esculent. 

 Sab. Borders of woods, and thickets: frequent. FL May. Fr. Sept. 



5. C. pimctata, Jacq. Leaves cuneate-obovate, doubly serrate, 

 subplicate ; styles 2 or 3 ; fruit subglobose, orange-color, dotted. 

 DOTTED CRATAEGUS. 



Stem 8 to 12 or 15 feet high, with rugged branches armed with stout sharp 

 thorns 1 to 2 inches in length. Leaves an inch and half to 3 inches long; petioles 

 % to ^ of an inch in length. Corymbs compound, pubescent, often quite villous. 

 Fruit %io% of an inch in diameter, sometimes red when mature, esculent and 

 not unpleasant to the taste, 

 Hob. Borders of woods ; along streams, &c.: not common. Fl. May. Fr. Sept. 



Obs. The species doubtfully given as C. flava, in the 2nd edition 

 (C. tomentosa^ L. Torr. & Gr.), I am not yet well satisfied about; 

 and therefore leave it for further investigation. 



f f Flowers subsolitary, terminal. 



6. C. parvifolia. Ait, Leaves cuneate-oblong, or spatulate, 

 crenate, thickish, roughish-pubescent ; styles 5; fruit pyriform, 

 rather large, pale greenish-yellow. 



SMALL-LEAVED CRATAEGUS. Dwarf Thorn. 



Stem 3 to 5 feet high, bushy, armed with a few sharp thorns half an inch to an 

 inch long. Leaves % of an inch to an inch and half long, subsessile. Fruit % to 

 near half an inch in diameter, somewhat hairy, esculent. 

 Hob. Dry banks; Great Valley: rare. FL May. Fr. Sept. 



124. PY^RtTS, L. 



[The classical Latin name of the Pear-tree.] 



Styles 2, to 5. Pome fleshy or berry-like, 2- to 5-celled ; cells or 

 carpels cartilaginous, each 2-seeded. Trees, or shrubs : leaves mostly 

 simple, involute in the bud; flowers in cymose corymbs. 



1. STYLES 5, distinct : Pome turbinate, not umbilicate at base. 

 1. P. COMMTJNIS, L. Leaves lance-ovate, slightly serrate, smooth 

 above ; peduncles corymbose, pubescent. 

 COMMON PYRUS. Pear. Pear-tree. 



Stem 20 to 30 or 40 feet high, with virgate rather erect branches, forming an ob- 

 long or tapering head. Leaves 2 to 3 inches long; petioles 1 to 2 inches in length. 

 Flowers white, in clustered corymbs, on lateral spurs. Fruit 1 to 3 inches in 

 diameter, succulent, usually yellowish-green, with shades of red. 

 Hal). Gardens, yards, &c. Nat. of Europe. Fl. May. Fr. Aug. and after. 



Obs. Many varieties of this luscious fruit have been obtained, by 

 long culture, in which the French Pomologists seem especially to 

 excel. 



2. STYLES 5, united at base: Pome depressed-globose, umbilicate at base. 

 a. P. MALUS, L. Leaves ovate-oblong, serrate, pubescent above ,- 

 peduncles subumbellate, villous. 

 APPLE PYRUS. Common Apple. Apple-tree. 



