prksi])ent's address. 19 



Tuberous and bulbous plants common amongst the grass 

 include Brachystehxa foetidum, Raphionacme divaricata, 

 Euphorbia truncata, Eulophia rohusta, Bupliane toxicaria. 

 Gladiolus rigidifoliiis, Hypoxia costata and Hatcorthia tenuifolia. 



The common trees along the streams and rivers are the 

 Doornboom (Acacia liairoo), the Wilgeboom {Salix capmsis), and 

 the Vaterlands wilg {Comhretnm cnjthrophyWum). 



The High Veld affords excellent grazing and pasturage for 

 all kinds of stock. The chief pasture grasses are the Rooa Gras 

 {Thcmeda triandra), Digitaria criantha, Panicum natalensc, 

 Panicwm Jcevifolium, Panicum serratum, Tricholaena rosea, 

 Triciiolaena sctifolia, and Cijnodnn dactylon. Other valuable 

 fodder plants include Trifoliuni afiicanu)n and Ipomaea 

 Greenstockii. 



The chief poisonous plants of the High Veld are the TuIpSi 

 (Homeria pallida) and Moraca spp., which are poisonous chiefly 

 to cattle, and Pachystigma pygmaca, which, during certain 

 seasons, causes heavy mortality amongst sheep. 



Overstocking on the High Veld invariably results in the veld 

 becoming overrun with Stocbe cinerea, which crowds out the 

 pasture grasses. 



7 AND 8. — The Waterberg Sand Veld (Plate IV) and 

 The Pietersburg High Veld. 



The Limpopo Highlands as delimited by Rogers include the 

 high-lying country which lies to the north and east of the northern 

 extension of the Drakensberg. They comprise the Waterberg, 

 Pietersburg, and Zoutpansberg plateaux, with their surrounding 

 country. Three distinct plant regions are recognisable : (1) A 

 western portion, which may be called the Waterberg Sand Veld, 

 occupied mainly by the Waterberg plateau is, on the whole, hilly 

 and rugged country with scanty and sandy soil. The sandy 

 valley's are mostly covered with grass, in which Elionurus 

 argenteus, Eragrostis superba, and tall species of Andropogon are 

 common, while the dominant trees are the Beukenhout [Faurea 

 saligna) and Suikerbos (Protea abyssinica) on the stiff close- 

 grained soils and the Vaal boom [Terrninalia scricea) on the deep, 

 loose, sandy soils. The deadl}' Giftblaar (Dichapetalum. 

 cymosum) is extremely plentiful in this region and is nearly 

 always, associated with the Wilde Sering. 



(2) An eastern portion, comprising the Pietersburg plateau, 

 and which may be termed the Pietersburg High Veld, consists 

 chiefly of flat rolling country, which resembles typical High Veld 

 scenery, and on which the Eooi Grass (Themcda triandra) 

 dominates. To the south the plateau slopes away to the 

 Busli Veld, and as soon as the altitude drops to 3,000 ft., grass and 

 vegetation gives way to bush. 



To the north the grassveld of the Pietersburg plateau merges- 

 into the thorn veld of the low country of the Limpopo Valley. It 

 is characterised by the dominance of Acacia pallens, A. 

 spirocarpoides, A. karroo and Combretnm porpliyrolepis. 



