410 Prain. — Mercurialineae and Adenoclineae of South Africa . 
We find, then, that three of our four areas, Namaqua, Griqua, and Natal, 
have each one distinctive species, but that the species which is distinctive of 
Natal overflows westward into the Cape area proper. On the other hand, 
this Cape area, though exhibiting no overflow into Namaqua, does show an 
overflow into Natal and into the Transvaal by means of Leidesia procumbens 
and Adenocline acuta. In the Cape region itself there are eight other 
species, all of them endemic ; the endemic Cape element is thus 72 per cent, 
of the whole. The details of this distribution are shown more succinctly 
in the subjoined conspectus, wherein overflow species are marked (x), 
introduced species [ x ]. 
Conspectus of the Distribution of the South African 
Mercurialineae and Adenoclineae. 
Species. 
VI. South-West Africa. 
VII. South-East Africa. 
Namaqua. 
Griqua-Vaal. 
Cape. 
Natal. 
w 
< 
w 
' Mercurialis annua . . . 
— 
[x] 
— 
g 
Seidelia triandra . . . 
— 
X 
— 
13 
< - 
„ pumila .... 
- 
— 
X 
— 
Leidesia obtusa .... 
— 
— 
X 
— 
t> 
,, procumbens . . 
— 
(X) 
X 
(X) 
U 
w 
§ 
v „ firmula . . . 
X 
, 
. Adenocline violaefolia 
_ 
_ 
X 
— 
< 
,, acuta . . 
— 
(X) 
X 
(X) 
w 
2 
,, strict a . . . 
— 
X 
H A 
„ ovalifolia . . 
- 
- 
X 
— 
u 1 
0 
„ humilis . . 
— 
— 
X 
— 
z 
,, bupleuroides . 
— 
— 
(X) 
X 
0 
„ Zeyheri _ . . 
— 
— 
X 
— 
< 
' ,, sessili/olia . . 
— 
— 
X 
— 
Totals . . 
1 
3 
12 
3 
