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In the Catalogue Mr Watson has gone carefully through (Rosa &c Carex always excluded) it & has marked those forms, which stand in the Catalogue as true species, (it must be observed that this printed Catalogue is a well sifted list) & which are considered by most, a large majority (but not all Botanists) as species. He has marked 69 species which my may thus be considered in some degree unsettled, & these 69 being to 46 genera, which genera in Britain have on average 8.60 species. & therefore far above the average in Britain, which is 4.44, the genera with single species being excluded; or only 2.68 if these 69 species are considered as varieties

Mr In the Catalogue there are a certain number of varieties marked, (which it with a few exceptions (& Mr Watson has removed these exceptions in M. S.) have been thought species by some few authors, & but manifestly according to the drawing of up of the Catalogue less like true species: of these vars, there are 195 belonging to 111 genera, which have 575 species ie on average 5.18: the standard here is 2.63 if these forms are considered as Varieties. But if considered as species, then the standard will be

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4.96, & the number of species which these genera have will be 6.93. — So that law holds good however these forms are looked at.—

The third Category are varieties, which have been considered as species by hardly more than some single sp Botanist & & which do not appear in the Catalogue even as varieties. Of these there are only 32 belonging to 23 genera, which have 146 speces ie on average 6.34. The standard being here 2.63. —