Last Updated：2022/12/24
Mr H. C. Watson has marked for me in the well-sifted London Catalogue of plants (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 6.9 of the provinces into which Mr Watson has divided Great Britain.
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Mr
H.
C.
Watson
has
marked
for
me
in
the
well-sifted
London
Catalogue
of
plants
(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
6.9
of
the
provinces
into
which
Mr
Watson
has
divided
Great
Britain.
