1910.] NATURAL SCIENCES OF PHILADELPHIA. 189 



Fruit subglobose to short-oblong. 

 Calyx cavity of the fruit deep and narrow. 



Leaves broadly ovate to semiorbicular, acute 1. C. medioxima. 



Leaves ovate to deltoid, acuminate 2. C. felix. 



Calyx cavity of the fruit broad and shallow; leaves ovate-oblong, 



acuminate 3. C. stolonifera. 



Fruit globose to depressed-globose. 



Leaves broadly ovate, abruptly cuneate or rounded at the base. 

 Calyx cavity of the fruit deep and narrow. 



Flowers not more than 1 cm. in diameter; fruit obscurely 



pentagonal, dark red 4. C. ambigens. 



Flowers at least 1.5 cm. in diameter; fruit not pentagonal, 



often broader than high, scarlet 5. C. puta. 



Calyx cavity of the fruit broad and shallow ; flowers up to 2 cm. 



in diameter; anthers pink 6. C. blairensis. 



Leaves ovate, cuneate at the base, only slightly hairy on the 

 upper surface; fruit flattened at the ends, obscurely angled, 

 often broader than long; calyx cavity broad and shallow. 



7. C. leimonia. 

 Leaves ovate to rhombic, cuneate at the base; fruit depressed- 

 globose, crimson, slightly pruinose; calyx cavity broad and 



shallow 8. C. dissona. 



Fruit short-oblong; leaves ovate, more or less scabrate on the upper 



surface at maturity 9. C. ampliata. 



Fruit short-oblong to obovate. 



Calyx cavity of the fruit broad and shallow; leaves broadly ovate. 



10. C. pyramidata. 

 Calyx cavity of the fruit deep and narrow. 



Leaves ovate, glabrous at maturity 11. C. impervia. 



Leaves oblong-ovate, scabrate on the upper surface at maturity. 



12. C. luxuriosa. 

 Fruit obovate. 

 Leaves ovate, acuminate. 



Calyx cavity of the fruit deep and narrow; fruit slightly 5-angled. 

 orange to greenish orange, becoming scarlet, slightly pruinose. 



13. C. recordabilis. 

 Calyx cavity of the fruit broad and shallow. 

 Calyx-lobes villose on the inner surface. 



Flowers in wide lax corymbs; calyx-lobes long and slender. 



14. C. delectata. 

 Flowers in narrow compact corymbs; calyx-lobes short and 



broad 15. C. infensa. 



Calyx-lobes glabrous. 



Mature leaves scabrate on the upper surface; flowers in 

 5-10-flowered corymbs; anthers rose color. 



16. C. vegrandis. 

 Mature leaves glabrous on the upper surface; flowers in 



4-7-flowered corymbs ; anthers pale pink 17. C. radina. 



Leaves oblong-ovate, blue-green, scabrate on the upper surface; 



