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 OF CENTRAL Al'IlICA. 297

Among the few Lahiata, there is a species of Lavandula, possibly distinct from but very nearly related to L. multi- lida. 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.

pRiMULACEyE. Of this family two species of Anagallis occur in the collection, and of these A. caerulea was observed both near Ti'ipoli and in Bornou.

Samolus Valerandi was also found near Tripoli, in Wady Sardalis in Fezzan, and in Bornou.

Of Dicotyledonous, or even of all plkTuogamous ])lants, S. Valerandi is perhaps the most widely dilfused. 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 AVales, 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 v^w or which, indeed, has been found in the northern hemi- sphere, except the nearly related S. ebracteatus of Cuba. All the other species belong to the southern hemisphere, where S. Valerandi has also a very extensive range.

Of PLUMBAGiNEiE, there are three species of Statice Taxanihema ; 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 Of the three species in the herbarium, one appears to be unpublished.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 Jjjetalous orders in the col- lection, there arc 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 j and Cornulaca moaacantha of j\I. Delile is said

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