[B56]

Taking In Watsons Cybele Brit. there are 95 species marked as "Aliens" without an asterisk a (?)

These 95 94 92 species belong to 77 76 genera 76 genera, so that each of these imported genera has only 1.22 species on average.

[insertion:] It ought to have be 92

— These 77 76 belong to 37 orders — (Watson gives 86 orders & 77 genera) or each order has 2.0 genera. But Watson, gives with same exclusions 86 82 orders & 477 genera hence each has 5.8 genera

[Table] The Leguminosæ. Umbell. & Compositæ together are 232/1238= 1/5.3 of the British Plants.

To left-hand, the numerator show number of Aliens without (?) in Each Order: & the denominator is total number of such aliens introduced into England.— And so with other principal families. To Right hand, the numerator is the number of British species, (Aliens seem those with (?). Irish & Sarnian & unnumbered species being all excluded) in each Family; & the denominator is the total number with similar exclusions.—

It is curious how unlike the Cruciferæ viz 1/8 & 1/22; & how like the Leguminosæ 1/19 & 1/20 Umbellifers 1/23 & 1/22 Compo. 1/23 & 1/22. Lamiaceæ 1/31 & 1/28.—

/over

[B56v]

It may be said that many thousand seeds have been scattered over England, & of them, 92 have become in some degree settled in Grt. Britain, and these belong like plants of Coral Islds to many genera & many Families. I presume they have been chiefly imported from Europe with agricult. weeds & as the orders are in these proportions in Europe, it might be argued they wd be imported in these proportions yet it is strange that they shd be semi naturalised in these proportions, & shows how law influences it, & shows that evolution wd be in these proportions.— Thus looking for the Aliens in the Compositæ in London, I think most are Europæan, except Erigeron Canadense, I judge from characters & genera.—

[B56a]

Correctly Calculated

(Introduced Plants)

Cruciferæ 12/92 1/7.6

Leguminosæ 5/92 1/18.4

Umbelliferæ 4/92 1/23

Compositæ 10/92 1/9.2

Gramineæ 5/92 1/18.4

Caryophylleæ 3/92 1/30

Lamiaceæ 3/92 1/30