• it- I'lii.h .M.wr.M. 



• ?•"•. Ia'Uncs ui't cons|)i(.-uously lohcd ; fruit larj^c, j-'i in. thick, 



with soft tk'sh. ('. iiuicnfsprnna. 

 M(i. Lobes of tlie leaves reHexed. C. grayana. 



• ill. Leaf-lobes si)reading or ascending. 37. 

 ■{7. Terminal leaves cuneate. C. abionoii. 

 ■ u. Terminal leaves cordate. C. populuca. 



— Pniinosae. — 

 •■?<^. Leaves elliptic-ovate. C. jcsnpi. " 

 •"iS. Leaves ovate. .'iO. 



39. Leaves usually cordate. h>. 



39. Leaves usually cuneate. 11. 



1<>.' Fruit conspicuously angled, strongly pruinose. C. nignsa. 



40. Fruit not conspicuously angled, only slightly pruinose. 



C. filipes. 

 4L Lobes of the leaves deep, acuminate. C. leiophylla. 



41. Lobes of the leaves shallow, acute. 42. 



42. Fruit without conspicuous angles. C. bcata. 



42. Fruit conspicuously angled. 43. 



43. Leaves deltoid. C. gaithigcri. 



43. Leaves ovate. C. pminosa. 



— Coccineae. — 



11. Mature leaves usually glal)rous above; young foliage 

 bronze-green. 45. 



44. Mature leaves tomentose above; young .foliage yellow- 



green. oO 



4."). Leaves oblong-ovate. 4G. 



4-V Leaves broadly ovate. 47. 



4(j. Corymbs nearly glabrous. C. villipcs. 



4(1. Corymbs very pubescent. C. niunuala. 



47. Corymbs and fruit glabrous. C. coccinioidcs. 



47. Corymbs and fruit pubescent or tomentose 48. 



48. Leaves on the vegetative shoots cuneate. 49. 



4<'<. Leaves on the vegetative shoots cordate. C. albicans. 



1!>. Leaves concave, Li-3 in. long, ]l-2:t in. wide. C. prmglei. 



49. Leaves plane, L[-4 in. long, Li-3^ in. wide. C. coccinea. 

 ■)<». Leaves on the vegetative shoots cuneate at tlu- base. 51. 



50. Leaves on the vegetative shoots cordate. C. jiiollis. 



51. Lobes of the leaves broad, shallow, acuminate. C. 



arnold'mua. 



