28 



cxxiiic. MORACE^ (Rendle). 



[Dorstenia. 



47. 



48. 



50. 



*****Receptacle much elongated, narrowly linear- 

 lanceolate, with no lateral bract-arms (but 

 see 48, D. lukafuensis). 

 Male flowers I -androus : 

 Receptacle about 1 in. long, lunately curved 46 

 Receptacle not lunate : 



Lateral margin entire throughout 

 Tjateral margin with a few short bract- 

 arms just above the base ... 

 Male flowers 2-androus (or sometimes also 

 1 -androus) (not seen in 50, D. tenuifolia) 

 Receptacle exceeding 1 in. in length ; 



leaves oblong-elliptic ... 

 Receptacle less than 1 in. in length ; leaves 

 oblong-lanceolate : 

 Apical bract-arm not exceeding the recept 



' acle 



Apical bract-arm exceeding the receptacle 51 

 Male flowers 2-androus with a central colum- 

 nar pistillodium 



******Receptacle orbicular or 3- to multi-angular, 

 with an obvious margin (1-4 lin. broad), 

 and bract-arms varying greatly in length, 

 generally a few are long and the intervening 

 ones range from inconspicuous teeth to 

 moderately long, linear arms : 

 Bract -arms not or barely exceeding the 

 diameter of the receptacle : 

 Margin of receptacle 3 or more lin. wide : 



Stipules 2-2^ lin. long I 



Stipules 6-7 lin. long 5 



Margin of receptacle about 1 lin. wide ... 5 

 Some bract-arms exceeding the diameter of 

 the receptacle : 

 Bract-arms few, with intervening projections 

 Receptacle four-sided with 4 long bract 



arms ... 

 Receptacle subtriangular with 3 lonj 

 bract -arms... 

 Bract-arms many : 



Longer arms not exceeding ^ in. 



1 in 



D. hicornis. 

 D. psilurus. 

 D. lukafuensis. 



49. D. scabra. 



D. tenuifolia. 

 D. Stolzii. 



52. D. Klainei. 



I 



D. Barteri. 



D. mvUiradiata. 



D. Lujce. 



Longer arms 

 margin 



2-4 



with pectinate 



h. Stems woody ; female flowers solitary and 

 central or few in number. 

 ♦Receptacle turbinate with orbicular or lobed 

 disc bearing a few long slender bract-arms : 



Receptacle with orbicular disc 



Receptacle with lobed disc (sometimes oblong 

 in 62, D. Ledermutinii) -. 

 Receptacle 4-lobed : 



Leaves obovate-lauccolatc 

 Leaves oblong 



Receptacle 3-lobed 



Receptacle 5-6-toothed 



61. D. turhiiiata. 



D. Ledermam.ii. 

 D. edeeiisis. 

 D. a^pera. 

 D. Buesgenii. 



