OF FERNANDO PO. 3 
Others are common to Abyssinia, the Mauritius, Madagasear, 
&c.: as 
Viola Abyssinica Rubus apetalus 
Hypericum angustifolium Carex Boryana. 
Geranium Simense 
There are, again, other species whose only near affinities are 
with Abyssinian: as species of 
Agrocharis Plectranthus 
Gymnosciadium ? Veronica 
Dichrocephala Euphorbia 
Swertia Habenaria. 
Extending the comparison to genera, I find that of the 66 
Clarence Peak genera only 7 are not Abyssinian, and of the 45 
temperate genera 41 are temperate Abyssinian. Of the 3 remain- 
ing, Luzula and Schenus may yet be found in Abyssinia, and 
Leucothoe is a Mauritius plant. 
The next affinity is with Mauritius, Bourbon, and Madagascar : 
of the whole 76 species, 16 inhabit these places, and 8 more are 
closely allied to plants from there. Three temperate species are 
peculiar to Clarence Peak and the East African Islands, including 
Leucothoe angustifolia, Sebea brachyphylla, and Carex Wahlen- 
bergie. | Ericinella and Leucothoe are the only genera not Abys- 
sinian, whieh are common to these islands and to Fernando Po. 
Lastly, if compared with the Cape, the contrast is very striking : 
not only is there a total want of any true Cape types, except 
such few as are common to Abyssinia or the Eastern African 
Islands (5 species), but only 12 of the 76 Fernando Po species 
are known to be South African ; and of these all but Zuzula have 
been also found in Abyssinia. Only 12 others are nearly related 
to South African forms. Turning to the genera, Peddiea is the 
only peeuliarly South African one; and this is not temperate at 
Fernando Po, and is subtropical in South Africa. 
Hence the result of comparing the Clarence Peak flora with 
that of the African continent is—1. The intimate relationship 
with Abyssinia, of whose flora it is a member, and from which it 
is separated by 1800 miles of absolutely unexplored country *; 
2. the eurious relationship with the East Afriean Islands, which 
are still further off; 3. the almost total dissimilarity from the 
Cape flora. 
* This result is strongly in favour of the existence of a chain of mountains 
crossing Central Africa, from Abyssinia to the Cameroons Mountains, of whose 
probable existence M. du Chaillu has recently procured evidence. 
p2 
