(129) 



10. List of the Plants collected in the Percy Sladen Memorial 

 Expeditions, 1908-9, 1910-11, September, 1911, continued. 



Note on the localities visited by the Percy Sladen Memorial Expedi- 

 tion to the Khamiesberg, Giftberg, and Oliphant 's River Mountains, 

 September, 1911. — By H. H. W. Pearson. :: 



Plants collected during the expedition referred to in the title have 

 not been included in the parts already published. Those of them 

 which belong to the groups which follow will appear in their proper 

 places, with those collected elsewhere in South- West Africa, south of 

 the Swakop Eiver. 



The Khamiesberg is situated in Little Namaqualand. Its length 

 from north to south is approximately 50 miles ; its breadth is con- 

 siderably less. Its southern end lies in the vicinity of Stinkfontein 

 (south) and in the north it terminates a little south of Springbok. 

 Its eastern boundary lies in Bushmanland ; while in the west it 

 drops into the narrow maritime sandbelt. The principal vegetative 

 season occurs in August and September at the end of the period 

 of winter-rains. Many of its plants, however, do not flower until 

 the summer is advanced ; a number of these were collected on the 

 return of the expedition from the Orange Eiver in January, 1911. t 

 A number of its higher peaks reach an elevation exceeding 6,000 ft. ; 

 the greatest elevation attained is about 6,500 ft. The foothills of 

 the Khamiesberg effect a junction in the south with the western 

 extension of the Langeberg, to the south of which there lies the low, 

 undulating and almost waterless " Knechtsvlakte," about 50 miles 

 from north to south. The Matsiekamma tableland, about 2,000 ft. 

 s.m., an eastern branch of the Giftberg, is structurally connected 

 with the Bokkeveld and Oliphant's Kiver Mountains. We have, 

 therefore, in the Oliphant's Biver Mountains and the Giftberg, 

 northern continuations of the mountains of the Cape System, so 

 situated that their floras are likely in greater or less degree to be 



* Report of the Percy Sladen Memorial Expeditions in South-West Africa, 

 No. 28. - 



t Annals S.A. Museum, ix., p. 22. 



