CASTAXOPSIS, Spach in Suit. Bi ff. xi. 186. 

 Habit and character of Quercus, Sect. Ciilamydobalanus, except that the fmit'nuj- 



involucre is more or less spiny or tubercular externally^ often splits 



irregularly , and contains 1 to 4 nuts. 



Fruit ovoid or globose (sometimes transversely elongate in Xo. 11); the involucre 

 dehiscent, spin*/. 



Walls of involucre completely hidden by subulate spines. 



Leaves pubescent or minutely tomentose on the lower surface. 



Edges of leaves serrate at all ages. 



Leaves rufous beneath ; nerves 14 to 16 pairs . . . LA Indica. 



„ pale beneath ; nerves 10 to 12 pairs 2. C. Clarkei. 



Edges of leaves serrate when young, sometimes entire when adult ; 



nerves 7 to 9 pairs 3. C hystrix. 



* .... , , 



Edjres of leaves entire. 



Leaves distinctly dimorphous 4. C. divenifolia. 



Leaves not dimorphous. 



Leaves ovate-oblong to obovate-oblong, with 1 1 to 15 pairs of 



tomentose nerves 5. C. Mottleyana. 



Leaves elliptic-oblong to elliptic, with 12 to 16 pairs of nerves ; 



olivaceous when dry 6. C. Tungnrrut. 



Leaves ovate-lanceolate or oblong-lanceolate, with 9 to 12 



nairs of nerres ; under surface rufous or cinnamoneous . 7. C. Satanic*. 



Leaves glabrous on both surfaces (or very minutely pubescent beneath 

 in Catappafolia). 



Leaves 4 to 8-5 in. long, lanceolate, oblanceokte to elliptio-lanceolate. 



... 8. C. arqmten. 



glaucous beneath .......••• * 



Leaves less than 4 in. long, lanceolate, not glaucous 9. C. Bomeenm. 



Leaves ovate-oblong or obovate-obloug, not more than 12 in. long; 



involucre ovoid, 1-25 in. long, nut single 10. C.cattcmcarp, 



Leaves oblanceolate, 18 to 20 in. long ; involucre sub-globose or trans- 



versely oblong, obscurely angled, 15 in. to 2 in. in diameter . . 11. C. Cata PP *fol«. 



