14 Annals of the South African Museum. 



Orders No - of Percentage of 



species. total. 



18. Umbelliferae 9 . . 1-20 



19. Juucaceae 8 1-06 



20. Solanaceae . 8 1-06 



The following are the remaining Orders arranged according to the 

 number of species in each : Boraginaceae, Convolvulaceae, Ficoideae, 

 Rosaceae, Sautalaceae (7) ; Euphorbiaceae, Malvaceae, Polygalaceae, 

 Polygonaceae, Ranunculaceae, Sterculiaceae (6) ; Cucurbitaceae, Eri- 

 caceae, G-entiauaceae, Thymelaeaceae (5) ; Caryophyllaceae, Ebenaceae, 

 Selaginaceae (4) ; Amaraiitaceae, Commelinaceae, Urticaceae (3) ; 

 Acaiithaceae, Aroideae, Celastraceae, Dipsnceae, Droseraceae, Hyperi- 

 ciueae, Illecebraceae, Lentibularieae, Loganiaceae, Portulaccaceae, 

 Saliciueae (2) ; Ampelideae, Araliaceae, Bixiueae, Capparideae, 

 Eriocaulaceae, Halogoraceae, Linaceae, Menispermaceae, Myricaceae, 

 Myrsineae, Naiadaceae, Olacinaceae, Oleaceae, Ouagraceae. Papa- 

 veraceae, Pittosporaceae, Proteaceae, Resedaceae, Restiaceae, Rliam- 

 naceae, Valeriaceae, Verbenaceae, Xyridaceae (1). 



The following are the largest genera: Helichrysum (30 species), 

 Senecio (21), Crassula (13), Andropogon, Cyperus, Hypoxis (11), 

 Lotononis, Rhus (10), Eragrostis (9), Bulbostylis, Juncus, Schizo- 

 glossum, Scilla, Scirpus, Wahleubergia (7), Asclepias, Asparagus, 

 Digitaria, Gladiolus, Solanum, Sutera, Thesium (6). 



There are 189 genera represented by one species only. 



III. THE EASTERN MOUNTAIN REGION. 



All writers on the pliy to -geography of South Africa, despite the 

 divergence of their views as to the subdivisions of South Africa into 

 botanical regions, have agreed in including Basutoland in a region 

 generally termed the "Kalahari Region," the limits of which vary 

 according to their individual ideas.* Thus Thodet includes the S.W. 

 Protectorate, Bechuaualaud, the Orange Free State, Basutoland, the 

 Transvaal Hoogeveldt (south of the 26th parallel), and parts of the 

 N.E. Districts of the Cape Province in his "Kalahari Territory"; 

 MarlothJ defines a region which he calls the " High Veldt," and while 



* The reader should refer to a paper by R. Maiiotli (" Wissenschaftliche 

 ergebnisse der Deutscheii Tief see-Expedition auf dem Dampfer, ' Valdivia/ " 

 1898-1899, ii, 3, Pis. 4 and 5), where a set of instructive maps is given showing 

 the historical development of South African Phy to- Geography. 



t Justus Thode, ' The Botanical Eegions of Natal, determined by Altitude/ 

 Durban, 1901. 



\ R. Maiioth, " The Phyto-Geographical Subdivisions of South Africa/" 

 ' Report of the Brit. Assoc. Adv. Sc./ Cape Town, 1905. 



