390 
Sonder not only was prevented from providing C. plerogona with 
the distinctive name of which it stood in need; he was led to pro- 
pose an unnecessary name for the real plant of Jacquin, from 
which among other things C. pterogona differs in having leaves with 
translucent patches and stems with erosely-denticulate wings. 
When rectifying Sonder’s misapprehension Miiller, in 1856, 
cited for his newly named species only localities in the Cape Penin- 
sula. In so doing it would appear that Miiller was very nearly 
justified ; the only division, outside the limits of the Cape Peninsula, 
whence perfectly authentic examples of C. pterogona have been 
reported, is Paarl. An examination of the evidence available shows 
that it is only the Table Mountain (Cape Div.) portion and not, as 
Sonder has stated, the Winterberg (Fort Beaufort Div.) portion of 
* Ecklon & Zeyher n. 62’ which belongs to this species: also, that 
it is only the Cape Flats (Cape Div.) portion of C. polygonvides, 
var. angustifolia, Krauss, and not, as Pax has been led to believe, 
the Winterhoek (Uitenhage Div.) portion of Krauss’ variety that is 
referable to C. pterogona. It has, however, to be added that there 
is now in herb. Holm. a specimen of C. pterogona, which once 
belonged to Sonder, which bears the notation ‘ HK. & Z. 64. 9’ and 
therefore, if this notation be correct, ought to have come from the 
banks of the Karega River (Bathurst Div.). But this record is so 
doubtful that until authentic evidence to the contrary is forth- 
- coming we are disposed to assume that the species is, as Miiller 
supposed, confined to the extreme south-west of Cape Colony, and 
to doubt the extension eastwards (by oversight written ‘ westwards’) 
to Grahamstown which Pax has postulated. The recognition of 
two varieties, insisted upon by Miller and by Pax, is unnecessary. 
As in most other species of the group to which it belongs the 
leaves on young twigs of C. pierogona are manifestly shorter than 
the leaves on the main branches. But all specimens do not happen 
to have young twigs developed when they are collected. If a speci- 
men chances to be without young twigs its leaves are uniform in 
length ; if it happens to have developed its young twigs its leaves 
are of different lengths and the plant is in the condition—for it is 
only a condition—to which Krauss, Miiller and Pax have given 
the varietal name “ heterophylla.” : 
Pax \.c. (1911), C. polifolia, § brevifolia, Paz le., pro parte minima 
et quoad Diels 595 tantum (1911). 
