hi 



BOTANY OF SOCOTRA. 



Trichonilji.r, which is ditypic. An analysis of the generic constitution of the 

 endemic flora gives the subjoined table illustrating the geographical area of 



the several genera :— 



Table showing distribution of genera with endemic species in the 

 phanerogamic flora of socotra. 



Genera. 



Cocculus, . 



Farsetia, 



Brassica, 



Lachnocapsa, 



Cleome, 



Reseda, 



Alsodeia, . 



Polycarprca, 



Hypericum, 



Hibiscus, . 



Melhania, . 



Grewia, 



Corchorus, . 



Elaeocarpus, 



Dirachma, . 

 Thamnosma, 



Boswellia, . 



Balsamodendron 



Vitis, 



Allopliylus, 



Rhus, 



Odina, 

 Crotalaria, . 

 l'riotropis, 



Trigonella, 

 Lotus, 

 Indigofera, 

 Tephrosia, . 



Taverniera, 



Onnocarpuin, 



Arthrocarpum, 

 Dichrostachys, 



Acacia, 

 Kalanchoe, 



Punica, 



T.* 

 T 

 1 



^2 





Chiefly African and Asian. 



Chiefly northern hemisphere. 

 Affinities doubtful. 



Chiefly American. 



Scarcely represented in America. 



Temperate regions and hills in tropics only. 



Mostly African. Extending to Australia. 



Although absent from Africa, has some species in 

 Madagascar and the Mascarene Islands, and is 

 widely spread in the old-world tropics, south 

 Pacific, and Australia. 



Allied to the south American monotypic genera 

 Wcndtia and Balbisia. 



Has two species out of Socotra, one in California, 

 and one in Texas. Besides Peganum is the only 

 new-world genus of true rues. 



Chiefly American. 



The Socotran endemic species is almost conspecific 

 with one in Birma. Not tropical. 



Attains a maximum in Africa. 

 Has only one species out of Socotra which inhabits 

 eastern tropical Himalayas. 



Temperate regions and hills in tropics only. 

 Attains a maximum in tropical and south Africa. 

 Attains a maximum in south Africa, and tropical 



and sub-tropical Australia. 

 Extends from Nubia through Persia and Beloochis- 



tan to India. 

 Small genus with two Mexican, one Australian, 



three tropical African, and one tropical Asian 



ami African species, besides the Socotran one. 

 Allied to Ormocarpum, and to the American Chccto- 



calyx, Nissolia, and similar genera. 

 Small genus with an Australian, an Australian and 



tropical Asian, and two or three tropical and 



south African species. 



Chiefly tropical and south African. , 



Has only one species out of Socotra, the pomegranate, 

 supposed to be native of the region embracing 

 Persia, Kurdistan, Afghanistan, and Beloo- 

 chistan. 



Indicates large distribution in temperate regions. 



