4 DR. HOOKER ON THE VEGETATION 
With the West African Islands again, contrary to my expec- 
tations, there is no marked relationship whatever, except obscurely 
with St. Helena through Wahlenbergia arguta: the arborescent 
Composite and Lobeliacee, Phylice, Melhanie, Frankenia, Aca- 
lypha, and frutescent Heydotis of St. Helena, being wholly un- 
represented in Fernando Po. 
Taking a still wider range, the temperate flora of Fernando Po 
belongs to the northern hemisphere. Of the 48 temperate genera, 
12 only are not European; whilst the following species are Euro- 
pean, and most of them British :— 
Oxalis corniculata Parietaria Mauritanica 
Sanicula Europæa Luzula campestris 
Galium Aparine Deschampsia cæspitosa 
— rotundifolium Brachypodium sylvaticum. 
Limosella aquatica 
The two following are also probably states of European plants :— 
Ranunculus pinnatus, very near R. philonotis ; Calamintha Simen- 
sis, near vulgaris. 
RsaNUNCULACES, 
Of this Order, which is very far from well-represented, even in 
the temperate and alpine regions of Tropical and Southern Africa, 
three genera, each containing a single species, were collected by 
Mr. Mann on Clarence Peak. All are Abyssinian ; one only, and 
that a plant of very wide distribution, is South African also. 
1. Clematis Simensis, Fresen; Rich. Fl. Abyss. i. 3. 
Hab. In Clarence Peak, alt. 4-8000 ped. (fl. Nov.)—Alte scandens, 120- 
pedalis! Flores albi. 
The flowers are a little smaller than the Abyssinian specimens. A. Richard 
describes this species as glaucous in all its parts, but such is not the case 
in all our authentically named specimens, nor in these from Fernando Po, 
which have also more membranous foliage; such differences are what the 
more humid climate of West Tropical Africa would lead us to expect. The 
lower parts of the filaments are also rather more silky in Mann’s specimens, 
but this is a variable character. I have no fruiting individuals. This species 
is found throughout Abyssinia at 8000 feet elevation. 
2. Thalictrum rhynchocarpum, Quart. Dill. § Rich. ; Rich. Fl. Abyss. i. 3. 
Hab. In Clarence Peak, alt. 10,000 ped. 
Herba 12-pedalis. Fl.virides. Stamina numero varia, interdum plurima, 
A most remarkable species, and quite unlike any other hitherto described. 
A. Richard rightly characterizes it as one of the best-marked species of the 
genus. Mann's specimens are in flower only, and have the pinnules some- 
times a little more divided than in Abyssinian ones; it is not uncommon 
in mountain woods of Abyssinia. 
