ROSACE.*:, (rose family.) 165 



17. CRATAEGUS, L. Hawthorn. White Thorn. 



Calyx-tube iiru-shapetl, the limb 5-cleft. Petals 5, roundish. Stamens many, 

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

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

 and white (rarely rose-colored) blossoms (Name from Kparos, streiKjth, on 

 account of the hardness of the wood.) 



* Cori/mbs manij-Jiowered. 

 •\~ Fruit small, depressed-globose (not larger than peas), bright red ; flowers mostlij 

 small ; cali/x-teeth short and broad {except in n. 3) ; st/jles 5 ; glabrous [ex- 

 cept C. Pyracantha) and glandless. 



C. Pyracantha, Pers. (Evergreen Thorn.) Leaves evergreen, shining 

 (1' long), uhloiig or spatulate-lanceolate, crenulate; the short petioles and 

 young branchlets pubescent ; corymbs small. — Shrub, spontaneous near 

 Washington and Philadelphia. (Adv. from Eu.) 



1. C. spathulata, ^lichx. Shrub or tree, 10-25° high; leaves thickish, 

 shining, deciduous, spatu/ate or oblanceolate, 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 broadlg 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, often 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 & Car. to Tex. 

 •1- •*- 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, pinnately 5 - 1 -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. 



^- ^- H- Fruit large (-1-1' long), red ; floivers large; styles and stones even in 

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

 lar fruit); stipules, calyx-teeth, bracts, etc., often beset with glands ; shrubs 

 or loiv trep.<i. [Species as characterized by Prof. C. S. Saec~nt.] 



5. C. COecinea, L. Branches reddish; spines stout, chest::ut-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 Y broad ; fruit coral-red, globose or obovate, Y broad. — Xewf. to Minn, 

 and southward. — Var. macracantha, Dudley ; spines longer ; leaves thicker, 

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

 ers and fruit rather larger. — Erom the St. Lawrence and E. Mass. to Minn. 



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

 slender-petioled, cuneate, truncate or cordate at base, usunlh' with acute narrow 



