The Thorn Trees 



445 



veined and dull above; fruit red or yellow; 

 flesh thick. 

 Nutlets 3 or 4; leaves narrow. 



Nutlets usually 3; nest of nutlets longer than 

 thick; leaves smooth, bright dark yellow- 

 green above. 

 Nutlets 3 or 4; nest of nutlets of about equal 

 length and thickness; leaves hairy, dull gray- 

 green above. 

 Nutlets 5; nest of nutlets shorter than thick; 

 leaves wide, 

 dd Leaves short -obovate to spatulate; leaf-stalks, leaves 

 and corymbs conspicuously glandular; corymbs 

 few-flowered; nutlets usually 3 or 4; fruit green, 

 orange or red, subglobose or oblong, hard; 

 leaves thin; twigs conspicuously zigzag. 

 Corymbs smooth; nest of nutlets shorter than 



thick. 

 Corymbs hairy. 

 Fruit smooth. 



Fruit yellow-green; nest of nutlets shorter than 



thick; leaves obovate. 

 Fruit red; nest of nutlets of about equal length 

 and thickness; leaves spatulate. 

 Fruit, twigs, and leaves hairy; nest of nutlets of 

 about equal length and thickness. 

 cc Leaves broadest at the middle. 



Fruit smooth; nutlets 3 to 5; fruit red, subglobose 

 to oblong; flesh thin; corymbs smooth, many- 

 flowered; leaves 3-lobed, smooth, bright dark 

 green above. 

 Fruit bright red, S to 7 mm. thick. 

 Fruit dull brick red, 6 to 9 mm. thick. 

 Fruit hairy. 

 Nutlets 3 to s; nest of nutlets shorter than thick; 

 corymbs hairy, many-flowered; leaves thick, 

 hairy above when mature, orbicular-ovate; flesh 

 thick; fruit globose, orange-red. 

 Nutlets 5, the nest of about equal length and 

 thickness; leaves thin, smooth above when ma- 

 ture, oblong to oval; fruit oblong to globose, 

 orange-red; flesh thin; corymbs many-flowered, 

 ccc Leaves broadest toward the base. 



Nutlets usually 3 or 4; sinus between nutlets shallow; 



nest of nutlets shorter than thick; fruit greenish or 



reddish yellow, nearly globular, angular; flesh thick, 



hard; corymbs few-flowered; leaves half-leathery, 



yellow-green. 



Nutlets usually 3 to 5; sinus between nutlets deep; 



nest of nutlets shorter than thick; fruit depressed 



globose to short oblong, angled, waxy; flesh 



7. C. pausiaca. 



8. C. punctata. 



9. C. suhorhicidata. 



ro. C. lacrimata. 



11. C. flava. 



12. C. recurva. 



13. C. dispar. 



14. C. viridis. 



15. C. nitida. 



16. C. Harbisoni. 



17. C. Berlandieri. 



18. C. Boyntoni. 



