Tl 



i 



. p. 1730. Sect. Lichtensteinia, Blume, Fl. Jav. Lorantli. p. 14. 

 Series ConstricUflon, Engl, in Engl. Jahrb. vol. xx. pp. 108, 

 113 partim; Engl. & Prantl, Nat. Pflanzenfam. Nachtr. i. 

 p. 133, partim. Sect. Constrictifiori, Spragiie in Dyer Fl 



Trop. Afr. vol. vi. sect. 1, pp. 257, 268. 



am 



itus, Engl., L. oleaefoli 

 Harv.l. 



Sect. XIII. Ebectilobi, S'prague in Dver, Fl. Trop. Afr. vol. vi. 



sect. 1, pp. 257, 270 (1910). Series Erectilobi, K. Krauae in 

 Engl. & Prantl, Nat. Pflanzenfam. NacKtr. iv. p. 73. Series 

 Constrictiflori, Engl, in Engl. Jahrb. vol. xx. pp. 108, 113, 

 partim. Genus Tapinantkus, Van Tiegli. in Bull. Soc. Bot. 

 France, vol. xlii. p. 267, partim. 

 S. xifrican species: L. Kraussianus, Meisn., L, prunifolius, 



E. Meyer. 



Sect. XIV. IsciiNAXTHUS, Engl in Engl. Jahrb. vol. xx. p. 125 



(1894); Engl. & Prantl, Nat, Pflanzenfam. Nachtr. i. p. 132; 

 Sprague in Dyer, FL Trop. Afr. vol. vi. sect. 1^ pp. 257, 272. 



Genus IscKnanihus, Van Tiegh. in Bull, Soc. Bot. France, 

 ■vol. xlii. p. 260. Genus Stephaniscus , Van Tiegh, I.e. 

 S. African species: L. Schlechteri, Eng. 



h 

 4 



The distribution of the South African sections of Loranthus 

 exhibits certain features of interest. Three of the four endemic 

 sections, Moquinia, Qtdnquenerves and Acranthemum are related 

 respectively to the East African sections Tetrameriy Incrassati 

 and Longifloriy whilst the fourth, Se/ptulina^, is allied to the West 

 African Cinerascentes. Of the non-endemic groups, six* occur 

 both in East and West Tropical Africa, threef in East Africa 

 only, and onej in West Tropical Africa. Thus the relationship 

 of both the endemic and non-endemic groups with those of East 

 Tropical Africa is three times as great as with those of West 

 Tropical Africa, 



The section SycopJiila affords a good example of discontinuous 

 distribution, nine species occurring in West Tropical Africa 

 (Cameroons to Angola), and two in Natal and Zululand. 

 Sycophila is regarded by the writer as one of the most primitive 

 of the African sections, on account of the flowers being^ arranged 

 in racemes,§ the polypetalous corolla, and the straight erect 

 filaments. Its discontinuous distribution is in keeping with this 

 bypoth 



esis. 



* Acroetdchys, Flicopetalus, Infundiluliformes, Consirictijlorif Ereciilobiy 



Ischnanfhns, 



t Eirsuti, Iwrassati, Tetrameri. The section Hirsuti includes 10 species, 

 & of which are confined to "East Africa, whilst the tenth, L. Dregei, is widely 

 distributed in East Africa, from Eritrea to the Komgha Division of Cape 

 Colony, and extends into Angola. For the purposes of the present compari* 

 son this extension is best neglected. 



1 Sycophila. 

 5 Ii 



In most of the sections the flowers are in umbels, fascicles or capitula. 



Moqiiinia exhibits transitional forms between a raceme and an umbel- 



