472 



KOSACEAE (ROSE FAMILY) 



shrubs or trees, 3-8 m. high, with irregular ascending branches and numer- 

 ous curved chestnut-brown spines 3-6 cm. long. Rocky woods. 



Fruit conspicuously angled, strongly pruinose. 



Leaves usually cuneate 89. C. pruinosa. 



Leaves cordate 40. C. deltoidts. 



Fruit without conspicuous angles, slightly pruinose. 

 Leaves ovate, cuneate or cordate. 



Leaves usually cordate 41. C. silvicola. 



Leaves usually cuneate. 



Lobes of lea'ves shallow, acute . 42. C. btata. 



Lobes of leaves deep, acuminate 43. < '. leiophylla. 



Leaves elliptic-ovate, cuneate 44. C. Jesupi. 



39. C. pruin6sa (Wendl.) C. Koch. Leaves elliptic-ovate to broadly ovate, 

 2.5-6 cm. long aud wide, membranaceous ; flowers about 2 cm. wide ; stamens 



about 20 ; anthers pink, rarely yellow ; fruit 

 apple-green, becoming scarlet or purple, 1.2- 

 1.5 cm. thick; flesh yellow, sweet; nutlets 

 6-8 mm. long ; nest of nutlets 8-9 mm. thick. 

 Common, w. N. E. to s. Wise., Mo., Va., 

 and s. in the mts. Fl. May; fr. Oct., Nov. 

 FIG. 779. Forma D^SSONA (Sarg.) Eggleston. 

 Stamens 10. With the typical form. 



Var. latislpala (Ashe) Eggleston. Leaves 

 more nearly entire ; fruit reddish-brown. 

 (C. cognata Sarg.) With the typical form. 

 Var. PHILADELPHIA (Sarg.) Eggleston. 

 Leaves with more acuminate lobes, those on 

 vegetative shoots usually cordate. (C.fusca 

 Sarg.) Range of typical form. 



Var. conjuncta (Sarg.) Eggleston. Fruit 

 less angular and not highly colored ; anthers 

 light yellow. Range of typical form. 



Var. PortSri (Britton) Eggleston. Fruit 

 pyriform, reddish-brown. Pocono Mt. and 

 adjacent region, e. Pa. 



40. C. deltoides Ashe. Leaves broadly 

 ovate, 3-7 cm. long and broad, abruptly 

 acuminate at the apex, cordate or truncate 

 at the base, with 4-6 pairs of broad acumi- 

 nate lobes ; flowers about 2 cm. broad ; 

 stamens about 10 ; fruit depressed-globose, bright red, 1-1.5 cm. thick ; flesh 

 yellow ; nutlets 6-7 mm. long ; nest of nutlets 8-10 mm. thick. Dutchess Co., 

 N. Y., and e. Pa. Fl. May ; fr. Oct. 



41. C. silvicola Beadle. Leaves triangular-ovate, 2-7 cm. long, 2-6 cm. wide, 

 rounded, truncate, or on vegetative shoots cordate at the base, incisely lobed ; 

 flowers about 1.5 cm. wide; stamens 10 ; fruit globose, 1-1.1 cm. thick, slightly 

 angular, red ; the 3-5 nutlets 6-8 mm. long ; nest of nutlets 7-8 mm. thick. 

 N. Ala. and n. w. Ga. 



Var. Beckwithae (Sarg.) Eggleston. Leaves sharply lobed ; flowers about 2 

 cm. wide ; fruit subglobose to compressed-globose, cherry red, 1.2-1.5 cm. 

 thick ; nutlets 6-8 mm. long ; nest of nutlets 8-10 mm. thick. (C. Eobbinsiana 

 Sarg. ; C. sequax Ashe.) Frequent, w. N. E. to s. Mich., and s. to Pa. Fl. 

 May ; fr. Oct. 



42. C. beata Sarg. Leaves 3-8 cm. long, 2.5-7 cm. wide, broadly cuneate 

 to truncate at the base, acutely lobed, membranaceous, dull ; flowers about 2 cm. 

 wide ; stamens about 20 ; fruit short-ellipsoidal, slightly angular, crimson, 

 slightly pruinose, 1-1.6 cm. thick ; the 4-5 nutlets 6-8 mm. long ; nest of nutlets 

 9-11 mm. thick. Occasional, w. N. Y. and s. Ont. Fl. May ; fr. Oct. 



Var. c6mpta (Sarg.) Eggleston. Leaves on vegetative shoots sometimes 

 subcordate, subcoriaceous ; flowers about 1.5 cm. wide; stamens 7-10; nutlet* 

 ft-4. Similar range. Fl. May ; fr. Oct. 



779. C. prulnos*. 



