Dorstenia.] 



cxxiiic. MORACEiE (Rendle). 



27 



Receptacle subrhomboid with a varying number 

 of very unequal bract-arms : 

 Receptacle ^ in. wide ; a few bracts very 



long, to 4 in 2Z. D. Zenker i. 



Receptacle 4 lin. wide ; bract-arms not 



exceeding 5 lin. in length ... ... 24. D, usambaren&is. 



Receptacle with long bract-arms from the angles : 



Receptacle rhomboid 26. D. Solheidii. 



Receptacle 3-6 -angular 26. D. Laurentii. 



Receptacle 6-angular, with longer bract-arms 

 from the angles and intervening shorter 



tfBract-arms not exceeding the diameter of the 

 receptacle : 

 Leaves entire ; longer bract-arms 6 to 6, about 



^-1 in. long 



Leaves entire or grossly dentate ; longer bract- 



arms T- 10, about 6 lin. long 



Leaves unequally pinnatifid 



****Receptacle elongated, at least twice as long as 

 broad (? 34, i>. Brieyi) : 

 fBract-arms on sides as well as ends of receptacle, 

 sometimes very short or uniting to form a 

 toothed margin on the sides : 



Terminal bract-arms longer than receptacle : 

 Terminal bract-arms to 2 in. long : 

 Lateral margin strongly toothed ... 



Lateral margin weakly toothed 



Terminal bract-arms to 4 in. long 

 Terminal bract -arms to 8 in. long 

 Terminal bract -arms barely as long as the 



receptacle 

 Terminal bract -arms less than half as long as 

 the receptacle : 

 Receptacle more than twice as long as broad : 

 Receptacle more than ^ in. long : 



Bracts slender, 1 lin. or less in length 

 Bracts triangular, tooth-like 

 Receptacle less than i in. long 

 Receptacle not more than twice as long as 

 broad ; bracts very short. 

 Bracts 4, symmetrical, triangular 

 Bracts forming a grossly dentate 



margin 



Bracts numerous, very short, linear 



tfOne bract-arm at each end of the oblong or 

 elliptic receptacle : 

 Receptacle \ in. long ; bract-arms 7 lin. long ... 

 Receptacle | in. long ; upper bract-arms 

 2 in. long. ... 



ttt^ract-arms from upper end only of the oval 

 receptacle 



tttf Margin of receptacle entire ; no bracts obvious 



27. D. obtiisibracteata. 



28. D. Staudtii. 



29. 

 30. 



D. jabassensis. 

 D. ulugurenais. 



D. tayloriana. 

 D. equator ialis. 

 D. longicauda. 

 D. Brieyi. 



36. D. poinsettiifolia. 



