

KOSACEAE (ROSE FAMILY) 475 



Var. dilatata (Sarg.) Eggleston. Corymbs 7-12-flowered ; flowers about 

 2.5 cm. broad ; fruit with less prominent calyx, the calyx-lobes more deciduous. 

 (<7. speciosa Sarg.) Montreal I. to R. I., and w. to Mo. Fl. May ; fr. Sept. 



51. C. Pringlei Sarg. Leaves concave, ovate to oval, 3-8 cm. long, 2.5-7 cm. 

 wide, obtuse at the apex, rounded or abruptly cuneate at the base, very shallowly 

 lobed, pubescent but glabrate above, pubescent along the veins beneath, bright 

 yellow-green; petioles 1-3 cm. long, pubescent; corymbs pubescent; flowers 

 about 2 cm. wide ; stamens about 10 ; styles 3-5 ; fruit short-ellipsoidal to pyri- 

 form, red, pubescent, about 1.5 cm. thick, with persistent spreading calyx-lobes 

 and yellow acid edible flesh; nutlets 7-9 mm. long; nest of nutlets 7-9 mm. 

 thick. Common, w. N. E. to n. 111., s. to Pa. Fl. May ; fr. Sept. Var. EX- 

 CLUSA (Sarg.) Kggleston. Leaves less concave ; corymbs densely pubescent. 

 Vt. and n. e. N. Y. Var. LOBULATA (Sarg.) Eggleston. Leaves more deeply 

 cut. (C. cristata Ashe.) With the typical form. 



52. C. pedicellata Sarg. Leaves broadly ovate, 3-10 cm. long, 3-9 cm. wide, 

 acute or acuminate at the apex, broadly cuneate to truncate at base, slightly 

 pubescent becoming scabrous above, nearly glabrous beneath, membranaceous ; 

 corymbs glabrous or slightly villous ; flowers 1.5-2 cm. wide ; calyx glabrous, 

 its lobes slightly villous on the upper side ; stamens 10-20 ; styles 3-5 ; fruit 

 pyriform to short-ellipsoidal, scarlet, glabrous, 1.5-2 cm. thick, with rather per- 

 sistent erect or spreading calyx-lobes and dry mealy flesh ; nutlets usually 4-5, 

 7-8 mm. long ; nest of nutlets 8-10 mm. thick. Frequent, s. Ct. to s. Ont. and 

 n. 111., s. to Pa. and Del. Fl. May; fr. Sept. Var. ELLWANGERIANA (Sarg.) 

 Eggleston has densely villous corymbs, fruits slightly villous, and nutlets 3-5. 

 Similar range. 



53. C. polita Sarg. Leaves broadly ovate to oblong-ovate, cordate, truncate, 

 or broadly cuneate at the base, 3-9 cm. long and wide, membranaceous, gla- 

 brous wheu mature, yellow-green; corymbs glabrous; flowers 1.5-2 cm. wide; 

 calyx glabrous, its lobes slightly pubescent above ; stamens 5-10 ; styles 3-4 ; 

 fruit subglobose to short-ellipsoidal-pyriform, glabrous, cherry-red, 1-1.5 cm. 

 thick, with deciduous calyx-lobes; nutlets sharply ridged on the back, 6-8 mm. 

 long; nest of nutlets 6-8 mm. thick. Occasional, w. N. E. to s. Mich., s. to 

 Del. Fl. May ; fr. Sept. Var. TATNALLIANA (Sarg.) Eggleston. Leaves 

 slightly pubescent ; corymbs, calyx, and fruit villous ; nutlets 3-5. With the 

 typical form. 



14. M6LLES Sarg. Leaves large, ovate, pubescent or tomentose becoming 

 scabrate above, acute at the apex, broadly cuneate to cordate at base, doubly 

 serrate or lobed, yellow-green, subcoriaceous or membranaceous ; petioles 

 2-4 cm. long, pubescent oV tomentose ; young foliage yellow-green ; corymbs 

 many-flowered, densely tomentose ; calyx-lobes glandular- serrate, somewhat 

 tomentose; stamens 10-20; anthers yellow; styles 3-5; fruit large, red, 

 pubescent, globose, ellipsoidal, or pyriform, with swollen erect or spreading 

 calyx-lobes and thick soft edible flesh ; nutlets usually 4-5, slightly ridged 

 on the back ; nest of nutlets with deep sinuses ; round-topped trees, some- 

 times 13 m. high, with curved spines 3^5 cm. long. 





Leaves on vegetative shoots cuneate at the base. 



Lobes of the leaves? shallow, broad, acuminate ; Mass, and Ct. . . 54. C. Arnoldiana. 

 Lobes deep, narrow, acute. 



Fruit globose or nearly so ; calyx rather prominent ; leaves subcori- 

 aceous 55. C. canadensis. 



Fruit ellipsoidal-pyriform ; calyx obscure ; leaves membranaceous . 56. C. submollis. 

 Leaves on the vegetative shoots cordate. 



Leaves 4-13 cm. long, 4-10 cm. wide, rugose, membranaceous ; western 57. C. mollis. 

 Leaves 3-11 cm. long, 3-9 cm. wide, plane, subcoriaceous ; Chainplain 



Valley 58. G. champlainensis. 



54. C. Arnoldiana Sarg. Leaves broadly ovate to oval, 3-10 cm. long, 2.5- 

 8.5cm. wide, broadly cuneate to truncate at the base, with broad shallow acu- 

 minate lobes; flowers about 2 cm. wide ; stamens about 10 ; fruit globose or 



.bglobose, 1.5-2 cm. thick, bright crimson, with scarcely enlarged spreading 



