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A Catalogue of British Plants by Rev. J. S. Henslow. 1835:

He makes of Phanerogams To be expunged     As he makes 71 species of willows, I have expunged 50 both here & in next calculation}

Genera 525 14 511

Species 1495 56 1439   50 1389

511/1380 (2.71 percentage of Species & genera. —

Now I find there are 120 genera with one or more species having varieties, (some of these vars. seem foolish, as weeping Birch) & these genera, (with the same species, & the 50 willows expunged) have 680 species

120/680 (5. 66 percentage of species to genus.

So that here, as before, we see it is the large genera which have most varieties, for the varying genera have on average more than twice the species, than those genera have which have do not vary. It is the least adapted genera toward which vary most

N. B. Henslow give 61 species for Carex, but as used on both sides, not so very great error even if incorrect.—

N. B. Henslow states that 58 vars. ought to be (?) expunged, but— he does not show which these are; I must get some other work to use. —

Babingtons Flora wd be best, but say [illeg]

Henslows proportion without any expunging at all are for Phanerogams, for Great Britain

Genera 525/1495 (2.84 average species to genus

For Cambridgeshire

Genera 382/836 (2.18 average of species in Cambridge

In Britain 91orders /525 (5.6 orders genera to orders.

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Henslow old M.S.

Omit Rubus Rosa, Hierac, Salix & Carex

10.

2d Cold stronger vars, thought to be species (about 89 in note)

3d col. lesser varieties

2d Colum — All the varieties

1col no' of species having vars

Column with number of species

Column with name of genera

10.—