three Species of Trifolium, | 213 
branches and leaves erect, but not divaricated; vaginæ and ftipulæ 
much larger than thofe of the medium, and the ftipulæ terminating 
in a fetaceous awn; the {pikes fingle, and without a peduncle; 
the flowers erect, not divaricated; and the loweft tooth of the calyx 
far fhorter than the tube of the corolla, &c. 
As Linnzus confounded Trifol. medium with alpefre, and faw it 
growing in Sweden on all dry hills near forefts, refembling the cul- 
tivated pratenfe, we fee the origin and reafon of the above-mentioned 
expreflion, ramis copiofiffimis luxurians in fatis which however he af- 
terwards excluded, having probably obferved his miftake. How far 
the Trifol. alpefre is fit for cultivation, I cannot determine ; but, as 
to medium, I have reafon to think it is not. For I have obferved the 
fame fingularity refpeéting it which profeflor Jacquin mentions— 
that, when planted in gardens, in a good and loofe foil, it generally 
grows more flender, and particularly its {pikes become fmaller; but 
on eminences, in a dry, hard, and uncultivated clay bottom, it grows 
fpontaneoufly very luxuriant. 
4. Trifolium uae 
To this I think may. be referred 
Trifolium alpeftre. Gouan. Tufir. p. 52. r 
Many cultivated plants being feen producing variegated flowers, 
it has been fuppofed that the fame might alfo be the cafe with 
refpeét to the wild ones. But on ftricter fearch it will be found, 
that in this point plants are moftly in the fame predicament with 
animals, the tame or domefticated individuals of which vary greatly 
as to colour, but not the wild ones. It has alfo been difcovered 
that various plants with differently-coloured flowers, which have 
been long efteemed only varieties of each other, are really diftinét fpe- 
cies ; and that, on more minute examination, befides the difference 
of 
