ROSACES. (ROSE FAMILY.) 165 



17. CRATJEGUS, L. HAWTHORN. WHITETHORN. 

 Calyx-tube urn-shaped, the limb 5-cleft. Petals 5, roundish. Stamens many, 

 or only 10-5. Styles 1-5. Pome drupe-like, containing 1-5 bony 1-seeded 

 stones. Thorny shrubs or small trees, with simple and mostly lobed leaves, 

 and white (rarely rose-colored) blossoms (Name from Kpdros, strength, on 

 account of the hardness of the wood.) 



* Corymbs many-flowered. 



i- Fruit small, depressed-globose (not larger than peas), bright red ; flowers mostly 

 small ; calyx-teeth short and broad (except in n. 3) ; styles 5 ; glabrous (ex- 

 cept C. Pyracantha) and glandless. 



C. PYRACANTHA, Pers. (EVERGREEN THORN.) Leaves evergreen, shining 

 (!' long), oblong or spatulate-lanceolate, crennl:i:a ; the short petioles and 

 young branchlets pubescent; corymbs sm.ill. Shrub, spontaneous near 

 Washington and Philadelphia. (Adv. from Lu.) 



1. C. spathulata, Michx. Shrub or tree, 10-25 high; leaves thickish, 

 shining, deciduous, spatu/ate or oblauceolate, with a long tapering base, crenate 

 above, rarely cut-lobed, nearly sessile. Va. to Fla., west to Mo. and Tex. 



2. C. COrdata, Ait. (WASHINGTON THORN.) Trunk 15-25 high; 

 leaves broadly ovate or triangular, mostly truncate or a little heart-shaped at 

 the base, on a slender petiole, variously 3 - 5-cleft or cut, serrate. Va. to Ga. 

 in the mountains, west to Mo. 



3. C. viridis, L. A small tree, often unarmed ; leaves ovate to ovate- 

 oblong or lanceolate, or oblong-obovate, mostly acute at both ends, on slender 

 petioles, acutely serrate, dften somewhat lobed, and often downy in the axils ; 

 flowers larger, numerous ; fruit bright red or rarely orange. (C. arborescens, 

 Ell.) Mississippi bottoms from St. Louis to the Gulf, and from S. Car. to Tex. 

 t- -i- Fruit small ( - \' long), ovoid, deep red ; flowers rather large ; styles 1-3. 



C.OXYACANTHA, L. (ENGLISH HAWTHORN.) Smooth ; leaves obovate, cut- 

 lobed and toothed, wedge-form at the base ; calyx not glandular. More or less 

 spontaneous as well as cultivated. (Adv. from Eu.) 



4. C. apiifolia, Michx. Softly pubescent when young ; leaves roundish, 

 with a broad truncate or slightly heart-shaped base, pinnateli/ 5 - 7-cleft, the 

 crowded divisions cut-lobed and sharply serrate ; petioles slender ; calyx-lobes 

 glandular-toothed, slender. S. Va. to Fla., west to Mo. and Tex. 



i- - *- Fruit large (-1' long), red ; flowers large; styles and stones even in 

 the same species 1-3 (when the fruit is ovoid or pear-shaped) or 4-5 (in qlobu- 

 far fruit) : stipules, calyx-teeth, bracts, etc., often beset ivith glands ; shrubs 

 or low trees. [Species as characterized by Prof. C. S. SARGENT.] 



5. C. COCCinea, L. Branches reddish; spines stout, chestnut-brown; 

 villous-pubescent on the shoots, glandular peduncles, and calyx ; leaves on 

 slender petioles, thin, pubescent beneath or often glabrous, round-ovate, cu- 

 neate or subcordate at base, acutely glandular-toothed, sometimes cut-lobed ; 

 flowers Abroad ; fruit coral-red, globose or obovate, $' broad. Newf. to Minn, 

 and southward. Var. JIACRACANTHA, Dudley ; spines longer ; leaves thicker, 

 cuneate at base, on stout petioles, often deeplv incised ; cymes broader; flow- 

 ers and fruit rather larger. From the St. Lawrence and E. Mass, to Minn. 



Var. mdllis, Torr. & Gray. Shoots densely pubescent ; leaves large, 

 sleuder-petioled, cuneate, truncate or cordate at base, usually with acute narrow 



