ROSACEA. (rose family.) 159 



4. R. blauda, Ait. (Early Wild-Rose.) Nearly unarmed, or with 

 scattered straight deciduous prickles (l°-3° high) ; leaflets 5-7, oval or oblong, 

 obtuse, pale on both sides and minutely downy or hoary beneath, serrate ; stipules 

 large; flowers 1-3, the peduncles and calyx-tube smooth and glaucous; fruit glo- 

 bose, crowned with the persistent erect and connivent entire calyx-lobes. — 

 Rocks and banks, Vermont to Penn. and Wisconsin, chiefly northward. May, 

 June. — Petals light rose-color. 



5. R. rubigin6sa, L. (Sweet-Brier.) Climbing high; prickles numer- 

 ous, the larger ones strong and hooked, the smaller awl-shaped ; leaflets doubly serrate, 

 rounded at the base ; downy and clothed with fragrant russet glands beneath; fruit 

 pear-shaped or obovate, crowned with the mostly persistent calyx-lobes. — Roadsides 

 and thickets. June -Aug. (Nat. from Eu.) 



6. R. micrantha, Smith. (Smaller-fl. S.) Prickles uniform and hooked ; \V»WVma. 

 fruit elliptical and ovate ; calyx-lobes deciduous ; flowers smaller : otherwise as the IJ^iwA** 

 last : probably a mere variety. — E. New England. (Nat. from Eu.) CaAa/mA" *^v 



WvAAAAAX 



16. CRAT51GUS, L. Hawthorn. White Thorn. 



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 ac- 

 count of the hardness of the wood. ) 



* Corymbs many-flowered. 

 +- Fruit very small, depressed-globose (not larger than peas), bright red: flowers 

 small: calyx-teeth short and broad: styles 5 : plants glabrous (except No. 1) and 

 glandless. 



1. C. Pyracantha, Pers. (Evergreen Thorn.) Leaves evergreen, shin- 

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

 young branchlets pubescent ; corymbs small. — Shrub, spontaneous at Wash- 

 ington, and near Philadelphia, Isaac Martindale. (Adv. from Eu.) 



2. C. spathulata, Michx. Leaves thickish, shining, but deciduous, spatu- 

 late or oblanceolate, with a long tapering base, crenate above, rarely cut-lobed, 

 nearly sessile. — Virginia and southward. May. — Shrub 10° - 15° high. 



3. C. COrdata, Ait. (Washington Thorn.) Leaves broadly ovate or 

 triangular, mostly truncate or a little heart-shaped at the base, on a slender 

 petiole, variously 3 - 5-c/e/? or cut, senate. — Virginia, Kentucky, and southward. 

 June. — Trunk 15° -25° high. 



•*-•*- Fruit small (i 1 - 1 J' long), ovoid, deep red: flowers rather large : styles 1-3. 



4. C. OxyacAntha, L. (English Hawthorn.) Smooth ; leaves obovate, J W CMA 6ma\< 

 cut-lobed and toothed, wedge-form at the base ; calyx not glandular. May. — 

 More or less spontaneous as well as cultivated. (Adv. from Eu.) 



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

 with a broad truncate or slightly heart-shaped base, pinnately 5-7-ckft, the 

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

 glandular-toothed, slender. — Virginia and southward. March, April. 



