Canthium. | LXX. RUBIACEX (HIERN). 
Corolla-lobes obtuse 
Corolla-lobes acute . . . 
Corolla-lobes caudate-acuminate 
Common peduncles in. long. 
Pedicels paniculate. Usually unarmed. 
4-5-merous. Disk hairy or glabrous. 
Inflorescence zigzag, divaricately branched. Occa- 
sionally spinous . . 
Inflorescence spreading, 1- fruited. Unarmed. 
Inflorescence subglobose, dense, not zigzag. Unarmed. 
Fruits numerous. 
Style pubescent (except the variety) . . . 
Style glabrous. 
Stigma calyptriform, much exserted. 
Flowers 5-merous. 
Leaves narrowed at the base. 
Branches slender, terete. Lateral veins 
of the leaves about 4-6 pairs . 
Branches rather slender, subterete. La- 
teral veins of the leaves about 7-9 
pairs. . Loe ee 
Branches robust, ‘angular. Lateral veins 
of the leaves about 7-8 pairs . 
Leaves rounded or hollowed at the base, or 
nearly so. 
Disk glabrous. 
Glabrous. Branches erect-patent . 
Hairy. Branches spreading . 
Disk more or less hispid. 
Hairs on the leaves or branches pilose- 
hispid. 
Branchlets hispid 
Branchlets glabrous . . 
Hairs on the leaves or branches short. 
Glabrous except the inflorescence, or 
nearly so. 
Calyx-teeth hairy. 
Leaves not reddish, but paler 
beneath . 
Leaves reddish on both sides when 
dry 
Calyx-teeth glabrous 
Flowers 4-merous. 
Tertiary veins of the leaves inconspicuous. 
Leaves turning neither red nor black in 
Flowers 
the dry state, glabrous, usually 
wedge-shaped at the base. . . . 
Leaves turning reddish in the dry state, 
not black. 
Pubescent. Leaves wedge-shaped at 
the base . 
Glabrescent except ‘the inflorescence. 
Leaves rounded at the base or 
nearly so. 
Calyx-tube hairy. . 
Calyx-tube glabrous or nearly 60 
Leaves (young) turning black when re 
not reddish . 3 
Tertiary veins of the leaves ‘conspicuous on 
. 12, 
. 13. 
. 14, 
15. 
. 16. 
26. 
. 27. 
. 28. 
. 29. 
. 30. 
. C. anomocarpum. 
. C. acutiflorum. 
. C. caudatiflorum. 
. C. horizontale. 
C. discolor. 
C. oligocarpum. 
C. zanzibaricum. 
C. gracile. 
C. Hendelotii. 
. C. polycarpum. 
. C. glabriflorum. 
C6. Cornelia. 
. ©. hispidum. 
. C. setosum. 
. CO. subcordatum. 
. C. congense. 
. C. rubens. 
. C. fetidum. 
C. Afzelianum. 
C. Bartert. 
C. nervosum, 
C. Mannii. 
C. lividum. 
