OF CENTRAL Al'RICA. 297 



Among the few Labiatce, there is a species of Lavandula, 

 possibly distinct from but very nearly related to L. multi- 

 fida. It was found on the mountains of Tarhona. 



Of BoRAGiNEiE, the herbarium includes eleven species^ 

 the greater part of which were collected near Tripoli, and 

 all of them belong to well-established genera. 



Primulace^e. Of this family two species of Anagallis 

 occur in the collection, and of these A. cserulea was observed 

 both near Tripoli and in Bornou. 



Samolus Valerandi was also found near Tripoh, in 

 Wady Sardalis in Fezzan, and in Bornou. 



Of Dicotyledonous, or even of all phsenogamous plants, S. 

 Valerandi is perhaps the most widely diffused. It is a very 

 general plant in Europe, has been found in several parts of 

 North Africa, in Dr. Oudney's herbarium it is from Bornou, 

 I have myself observed it at the Cape of Good Hope and 

 in New South Wales, and it is also indigenous to North 

 America. 



The geographical distribution of the genus Samolus is 

 equally remarkable. At present eight species are known, of 

 which S. Valerandi is the only one indigenous to Europe [241 

 or which, indeed, has been found in the northern hemi- 

 sphere, except the nearly related 8. ebradeatus of Cuba. 

 All the other species belong to the southern hemisphere, 

 where S. Valerandi has also a very extensive I'ange. 



Of Plumbagine^, there are three species of Statice 

 Taoaantliema ; for the latter name may be preserved as 

 belonging to a section, though hardly as that of a genus, 

 so far at least as depends on inflorescence, which in both 

 subdivisions of Statice is essentially similar, that of Statice 

 Armeria being only more condensed. Of the three species 

 in the herbarium, one appears to be unpublished. 



Among the plants of the Jpetalous orders in the col- 

 lection, there are very few remarkable, and hardly any new 

 species. 



Gymnocarpus decandrum was observed by Dr. Oudney 

 very commonly in gravelly deserts, on the route from Tripoli 

 to Eezzan ; and Cornulaca monacantha of M. Delile is said 



