348 



m 



- 



seen it further north in old river-beds three or four kilometres 



from the sea in the latitude of Cape Cross. There is no record of 



its occurrence in the 60 or 70 miles of country which intervene 



bet ween this point and the mouth of the Swakop. No precise 



information has as yet been obtained as to its presence elsewhere 



in German territory, though according to rumour it has been met 



with in the Kaokoveld between Cape Cross and the Cunene 

 river. 



Among the smaller plants of the plateau remarkable for the 

 frequency of their occurrence are Aerua desertorum, Engl. ; two 

 small Acanthaceae, one a Blepharis which is constantly found 

 near Wdioitwhia; a small Tetragonia ; the handsome white- 

 flowered Bouchea gariepensis, Schauer ; Bauhinia Marlothii, 

 Engl. ; a tall Asclepiatl with slender rod-like stems (? Gryptolepis 

 sp.) ; and a few small stunted grasses, mostly Aristidae. An 

 acaulescent Aloe grows socially here and there. Citrullus 

 ecirrhosus, Cogn., and pome other species of the same family 

 spread out their long, prostrate stems in sandy places. 



Flora (Main River-beds) -On the rocky sides and sandy floors 

 ot the lateral valleys of the Swakop and the Khan are found 

 WelunUchxa, Commiphora, the Asclepiad already mentioned, 

 Artsttdae and other grasses, with Aloe dichotoma, Linn, f., Sarco- 

 stemmav,minale, R. Br. (Fig. 5), a cactoid Euphorbia with stems 

 t>-o ft, high and zHoodia (? H. Gordoni, Sweet) of similar habit, 

 inese and other Namib forms here meet and mingle with plants 

 Delonging to the entirely different flora which prevails in the beds 

 ot the main rivers and consists of species which are at home on 

 tne higher levels to the north and east where these rivers take 



r?SM' 1S uN dry sandy bod of the Swakop at Haikamchab 



l/OU ft. alt.) supports a flora rich in individuals and fairly so in 



fFilZl 8 ' ™ cb J 001 ^ among its more predominant forms Acacia 

 amaa, Del the "Ana" tree; A. giraffae, Willd., the "Camel- 



drl:,»> V erh a?V h V ommoilest tree in Damaraland ; Ficus 

 a Tl T*'v*£ gl - '>J mlea P^debmus, E. Meyer ; Tamarix 



t^ fu K; the , Walfish Ba ^ Caroxylon, here a shrub 

 Frl, J?-? ' W1 - an " nder g row to of the sand-binding thorny grass 

 almn 1 1, 'f.^ m T' Tnn " Which covers lar ^ areas of the river bed 



( lr*l tJ ^ xcl I l \ 810 1 n of other plants of low habit ; a Tribute 

 a ikSiSS f % k* fi hi ^ h ' with handsome yellow flowers ; 

 tvh dt Lt ^' eT } ed nj Heh otropium (? H. albiflorum, Engl.) ; and a 



manv'nkLf/ 1 - ^T The m ^' m * of ^e sandy bed are in 

 manj places fringed by a dense scrub of reeds. 



at R^pwT 1 " 1 ? 1 ?^ the flora of the bed of the Khuiseb river 

 rathe^h* S Ch Dr - Sinclair > of Walfish Bay, has given me, I . 



fhouth a ^ r XQ 7 n^ r t0 that of the Swakop at Haikamchab, 

 rix^C^S? to , Galton < Ac ™« Qiraffae is not found within 

 Schimner fL ^n ?" mer station ' Schenck's photograph {see 

 KhS \«£ - U) 8h ° WS that above Roodebank the bed of the 

 character; ,TTL S ? me ' at least > of the species which are 



«SSS?Sb°^ S e ^ 0J t In the bed of the Swakop ' 



mile ofthfL u' the - Haik amchab flora extends to within a 

 some peculLKreT * """^ in *° * 8trand fl ° rd P re8enting 



