Book
D.
Review
Briggs
&
S.
M.
Walters: Plant
Variation and
loured, 61 black and white ill. World University
colson,
This
volume
in the
broad
a
latest results of
molecular
of the
work
in
and
There is
3
Chapter
mixis. The
Potentilla,
a
I agree with
cells
of the
and
in
it is
that
of
Briggs
Of
development
background (from Ray
behaviour
on
of
the basis
variation,
hybridization, polyvaluable
subject further”,
variation
are
nature
the
gamodemes,
and
Darwin;
to
of
made
to both
biolo-
and Dr. S. M. Walters. Their book is to the
here
to
review
its contents
in
but
detail,
I
striking points.
biometrical
early
to which
work,
occur
“Fortpflanzungsmodus
than
may
-
with
the
polar
difficulties
value
e.g.,
the well
chosen
importance
nuclei in
Meiose
failed
understanding
occasional
sexual
Many diploid
of combined
apomiktischer
studies
of
pseudogamous apomicts.
by cytological
in Ranunculus
apomixis,
to
Of course
of the
auricomus. Without
eminent
BlUtenpflanzen”
cytology
the actual
studies
the reviewer is
the
the
The sexual
difficult to demonstrate
refer
cross
Sexual
readily produced.
in Piloselia.
apo-
reproduce sexually, only
overcome
to
of
i.a., Rubus,
reproduce agamospermously.
may be
authors
to the
the treatment
groups are,
an
be
can
Piloselia
of the treatment of
the
critical
authors,
Rutishauser
by
biology
deserves
occasionally
subgenus
stresses the
done,
that
und
rather
the odd levels
This
to the
generations
authors state that it is very
was
way from the
mention
most stubborn
according
of Hieracium
on
The
omission
that the
frequently
areas.
as
of reproduction
study
apomictic
statement, but the
an
of the
groups,
which
of the male nucleus
any
age of
an
outmoded.
scientific
te*
and tho
last two centuries.
organic
Angiosperms. Special
species
vast
endosperm,
detracting
of
that in
as
upon
increasingly
aims
Library
background
signs
are
gradual speciation
undertake
survey
opinion
especially
occupy
nion
there
looked
entitled “How to take the
of the most
In these
from
seem to
-
of
of the
are
races
this
University
modern views
breeding
knowledge
cannot
importance
reproduction biology.
fusion process
I
concise
very
F-l
an
may
and
chapter,
some
taxonomy
however,
biotypes
co-
greatly.
higher polyploids
and
to
and Piloselia.
tetraploid
are
the historical
varation),
to introduce here Dr. D.
authors
produce
crosses,
and
and
22
p.,
amateur naturalists.
8 stresses the
Chapter
of variation
can
In the last
informative.
gives
during the
include:
of
opinion
biology
survey of the
a
evolution
to contribute to the
contribute
of
World
of the historical
survey
authors’
intraspecific variation,
to draw attention
figures
and
chapters
variation
need
very
give
and
the
evolution.
no
and
view,
of the
books
branches
and basis
interested
of
specialized
description
species,
how
suggestions
want
this
populations,
of
and
ploidy,
point
traditional
plant variation
the
on
origin
gists
of
series
not too
variation studies. In the
the
discussed in the 14
evolution
and
plant
biology
study
Topics
early
international
introductory,
they disagree with
course
256
Weidenfeld and Ni-
1969. 35 sh.
London,
provide
Evolution,
Library,
by
of the
standard
A.
opi-
work
Rutishauser
(Zurich, 1967).
In
in
chapter
March
statement,
drawbacks
since
of
Summaries
methods
10 the
in the
are
this
species
course are
like
the
evolving
non-taxonomists
and
authors
quote Linnaeus’s
Netherlands.
photographs
far
flowers
minor
present
so
As
as
at
observation
own
present
(1737) that
observations
some
weeks
go,
later
Caltha
in
agree
with
the Netherlands.
rapidly.
extremely
The book
special
is
a
welcome
in
splendid
developments
of
a
field
in which
introduction
for
this
These
plant taxonomy.
knowledge
students
The fine
and
and for
drawings
mention.
Th.W.J.
456
flowers
palustris
I cannot
ones.
one are
interested in the recent
deserve
my
Acta Bot.
Need.
19(3J,
Gadella
June
1970