96 ROCHESTER ACADEMY OF SCIENCE. 



§ PRUINOSAE. 



Fruit medium size, red, often slightly Jivc-angled, more or less pruinose, 

 the calyx-lobes 2isually raised on a short tube ; corymbs feiv or 

 many-Jlowered ; stamens 10-20 ; leaves thick or subcoriaceous, 

 usually blue-green, glabrous or slightly villose while young. 

 Stamens 20. 



ANTHERS PURPLE OR RED. 



Leaves oblong-ovate, villose on the upper surface while 

 young ; corymbs many-flowered ; anthers dark maroon 

 color ; fruit oblong to oblong-ovate, crimsom ; nutlets 

 4-5. J. C. beata. 



Leaves ovate to rhombic, slightly villose while young, yellow- 

 green ; corymbs many-flowered ; anthers red ; fruit 

 ovate to oblong, dark crimson ; nutlets 3-4. 



4. C. Lennoniana. 



ANTHERS YELLOW. 



Leaves broadly ovate, slightly hairy while young on the 

 upper side of the midribs ; corymbs few-flowered ; 

 fruit obovate to subglobose, dark green, becoming bright 

 red and lustrous late in the season ; nutlets usually 4 ; 

 spines long and slender. 5. C. leiophylla. 



Leaves oblong-ovate, slightly hairy on the upper surface 

 while young ; corymbs many-flowered ; fruit oblong or 

 slightly obovate, scarlet ; nutlets 4 or 5 ; spines short 

 and stout. 6. C. formosa. 



Stamens 10 or less. 



ANTHERS ROSE COLOR OR PURPLE. 



Leaves oblong-ovate, slightly villose while young on the 

 upper surface; glabrous at maturity ; corymbs many- 

 flowered ; stamens 7-10 ; anthers dark rose color ; fruit 

 usually oblong-obovate, light cherry red ; nutlets 3-4. 



7. C. compta. 



Leaves ovate, hirsute while young and scabrate at maturity 

 on the upper surface ; corymbs usually few-flowered ; 

 anthers purple ; fruit subglobose to short-oblong, 

 scarlet ; nudets 4-5. 8. C. diffusa. 



