| → seems to me 1859 1860 |
| is 1861 1866 1869 1872 |
|
| ←Subtitle not present 1859 1860 1861
Summary. 1866 1869 1872 |
| → have the same general characters as species, for they 1859 1860 |
| OMIT 1861 1866 1869 1872 |
|
| → the occurrence of such links cannot affect the actual characters of the forms which they connect; and except, 1859 1860 |
| them together, and the occurrence of such links does not affect the character of the forms which they connect; and except, 1861 1866 |
| OMIT 1869 1872 |
|
|
we shall see how this may be explained, and how the lesser differences between varieties
tend to increase into the greater differences between species. |
|
| There is one other point which
→seems to me
worth notice. Varieties generally have much restricted ranges: this statement is indeed scarcely more than a truism,
if a variety were found to have a wider range than that of its supposed parent-species, their denominations
be reversed. But there is
reason to
that
species which are very closely allied to other species, and in so far resemble varieties, often have much restricted ranges. For instance, Mr. H. C.
has marked for me in the well-sifted London Catalogue of
(4th edition) 63 plants which are therein ranked as species, but which he considers as so closely allied to other species as to be of doubtful value: these 63 reputed species range on an average over
of the provinces into which Mr. Watson has divided Great Britain. Now, in this same
53 acknowledged varieties are recorded, and these range over
whereas, the species to which these varieties belong range over
provinces. So that the acknowledged varieties have
nearly the same restricted average range, as have
closely allied forms, marked for me by Mr. Watson as doubtful species, but which are almost universally ranked by British botanists as good and true species. →
|
| Finally,
varieties
→have the same general characters as species, for they
cannot be distinguished from
by the discovery of intermediate
→the occurrence of such links cannot affect the actual characters of the forms which they connect; and except,
by a certain
of
|
