KOSACEAE (ROSE FAMILY) 



471 



778. C. macrosperma. 



C. uber Ashe.) Montreal to Wise., s. through w. N. E. to Pa., and in the mts. 

 (ascending to 1800 m.) to N. C. and Tenn. Fl. May ; fr. Sept. 



36. C. macrosp6rma Ashe. Leaves elliptical-ovate to broadly ovate, rounded 

 to truncate or rarely cordate at the base, 2.5-7 cm. long, 2-7 cm. wide, the lobes 

 acute; corymbs glabrous or slightly villous ; flowers 1.5-2 cm. wide; stamens 



5-10 (-20) ; styles 2-5 ; fruit ellipsoidal or pyri- 

 form, 1-1.8 cm. thick, scarlet to crimson, often 

 glaucous ; nutlets usually 3-4, 6-8 mm. long ; 

 nest of nutlets 6-8 mm. thick. N. S. and n. 

 Me. to n. Mich, and s. e. Minn., s. to Pa., 

 n. 111., and in the mts. to N. C. and Tenn. Fl. 

 May ; fr. Sept. FIG. 778. Var. FENTANDRA 

 (Sarg.) Eggleston. Leaves sharply cuneate at 

 the base. Vt. to Va. Var. DEMfssA (Sarg.) 

 Eggleston. Leaves and fruit smaller. Occa- 

 sional, w. N. E. to n. HI. and w. Va. 



Var. pastbrum (Sarg.) Eggleston. Leaves 

 more nearly entire ; fruit dark crimson. Low 

 grounds, w. N. E. and N. Y. Var. MAT^RA 

 (Sarg.) Eggleston. Lobes of the leaves acumi- 

 nate, often recurved. Kange of the typical 

 form. Fr. Aug., Sept. Var. AcuTfLOBA (Sarg.) 

 Eggleston. Lobes of leaves acuminate, re- 

 curved ; leaves of vegetative shoots often cor- 

 date. Coast of N. S. and N. E. 



36. C. Grayana Eggleston. Leaves flabel- 

 late, 2.5-8 cm. long, 2-7 cm. wide, acuminate, 

 broadly cuneate to truncate at the base, slightly 

 pubescent above, glabrate, the lobes 4-6 pairs, often acuminate, their tips 

 recurved; corymbs slightly villous; flowers about 1.5 cm. wide; calyx-tube 

 villous below, the lobes glabrous outside, slightly villous within, somewhat 

 glandular-margined ; stamens about 20 ; styles 3-5 ; fruit subglobose to short- 

 ellipsoidal, angular, dark cherry-red, with reflexed calyx-lobes and thick yellow 

 mealy flesh ; nutlets usually 4-5, 6-7.5 mm. long ; nest of nutlets 6-7 mm. thick, 

 strongly ridged on the back. ( C. flabellata Sarg. , not Mespilus flabellata Bosc. ) 

 Montmorency Falls to Montreal, Que., w. N. E. and n. e. N. Y. Fl. May ; 

 fr. Aug., Sept. 



37. C. alnbrum Sarg. Leaves ovate, 3-7 cm. long, 2.5-6.5 cm. wide, broadly 

 cuneate to truncate ; corymbs glabrous ; flowers 1.5-2 cm. wide ; stamens about 

 20 ; fruit subglobose, 1.2-1.5 cm. thick, slightly angular, dark cherry-red ; flesh 

 yellow, acid ; the 3-5 nutlets 7-8 mm. long ; nest of nutlets 8-9 mm. thick. (C. 

 Edsoni Sarg.^ N. E. to s. Mich, and Pa. Fl. May ; fr. Sept. 



38. C. populnea Ashe. Leaves broadly ovate to elliptic-ovate, 2.5-6.5 cm. 

 long and wide, broadly cuneate to truncate at the base, those on vegetative shoots 

 usually cordate; corymbs glabrous; flowers 1.5-2 cm. wide; stamens 5-10; 

 styles 2-4; fruit globose to short-ellipsoidal, scarlet, 1-1.5 cm. thick, with ap- 

 pressed or spreading deciduous sepals and yellow flesh ; nutlets usually 3-4, 

 7-8 mm. long; nest of nutlets 7-8 mm. thick. (C7. stolonifera Sarg.) Occa- 

 sional, s. Ont. to Pa. and Del. Fl. May ; fr. Sept. 



12. PRUIN6SAE Sarg. (SILVICOLAE Beadle.) Leaves ovate, acute or acumi- 

 nate at the apex, broadly cuneate to truncate (occasionally cordate) at the 

 base, doubly serrate or lobed, membranaceous to subcoriaceous, blue-green, 

 glabrous; petioles slightly glandular, 1-3 cm. long; young foliage usually 

 bronze-green; corymbs many-flowered, glabrous; calyx-lobes deltoid-acu- 

 minate, often serrate at the base, glumaceous ; stamens 10-20 ; anthers 

 usually pink ; styles 3-5; fruit usually depressed-globose to short-ellipsoidal, 

 strongly angled, red, pruinose, with prominent spreading persistent calyx- 

 lobes and hard thick flesh ; nutlets usually 4-5, strongly ridged dorsally ; 

 nest of nutlets shorter than thick, with deep sinuses between the nutlets; 



