Floiuering Plants and Ferns of the Gape Peninsula. 227 



C. Penins. Natal. 



Eestio 29 



Cliffortia 23 3 



Heliophila 22 5 



Muraltia 18 2 



Tetraria 17 1 



Agathosma 15 



Serruria 15 



Gnidia 15 4 



Elegia 15 



Ehrharta 14 2 



Geissorhiza 11 



Lachenalia 11 



Felicia 10 3 



Protea 10 4 



Lobostemon 9 



Leucadendron ... 9 



Natal. C. Penins. 



Ehus 26 11 



Panicum 26 



Ipomaea 24 



Asplenium 22 5 



Hibiscus 21 3 



Habenaria 21 



Vitis 18 1 



Vernonia 18 



Hypoxis 18 7 



Plectranthus ... 17 



Argyrolobium ... 15 4 



Andropogon 15 3 



Kniphofia 12 1 



Polypodium 12 1 



Angrsecum 11 



Combretum 8 



Polystachya 8 



The Karroo Eegion. 



With regard to the Karroo Eegion which bounds the South-western 

 Eegion upon the whole of its northern and north-eastern sides, a few 

 words must suffice. The relations between the two Eegions are 

 considerably slighter than those between the South-western and Sub- 

 tropical Eegion. A list of the twelve largest Orders of the eastern part 

 of the Karroo has been given on p. 225. This has been compiled from 

 the records of Drege, and of my own collections made during several 

 years' residence at Graaff Eeinet. It will be seen by it that the large 

 succulent Orders Ficoide^ and Crassulace^ occupy a much more 

 prominent position than on the Peninsula ; and to this it may be 

 added that the dry climate of the Karroo has resulted in a much 

 more frequent tendency to a succulent growth of stems, branches, and 

 leaves in several other Orders, such as Zygophyllace^, Composite, 

 and LiLiACE^ (tribe Aloinese). This is not merely the case as to 

 systematic characters, but it has also strongly characterised the floral 

 landscape, both by the character of the plant-forms as well as by the 

 number of the individual plants in proportion to others. The Order 

 GoMPOSiTiE, which on our Peninsula constitutes about 12 per cent, of 

 the Flora, reaches in the Karroo Eegion to 17 per cent. ; the Ficoide^. 

 reach nearly 7 per cent. ; the Crassulace^, 5*3. 



On the other hand, the seven Orders Eutace^, Bruniace^, 

 ERiCACEiE, Proteace^, PENiEACEiE, and Orchidace^, which are 



