A new species of the genus Tulipa (Liliaceae) from China


Zhao, Y.Z.

Novon 13(2): 277-278

2003


Tulipa mongolica Y. Z. Zhao (Liliaceae) is described from Inner Mongolia, China. The new species is distinguished by its filaments 2.5-3.0 times as long as the anthers. It is related to T. heteropetala Ledebour on the basis of its filaments widened from the mid-point down, narrowing on both sides of the filament.

A
New
Species
of
the
Genus
Tulipa
(Liliaceae)
from
China
Yi-Zhi
Zhao
Faculty
of
Life
Science,
Inner
Mongolia
University,
Hohhot
010021,
China
ABSTRACT.
Tulipa
mongolica
Y.
Z.
Zhao
(Lili-
aceae)
is
described
from
Inner
Mongolia,
China.
The
new
species
is
distinguished
by
its
filaments
2.5-3.0
times
as
long
as
the
anthers.
It
is
related
to
T
heteropetala
Ledebour
on
the
basis
of
its
fil-
aments
widened
from
the
mid-point
down,
narrow-
ing
on
both
sides
of
the
filament.
Key
words:
China,
Inner
Mongolia,
Liliaceae,
Tulipa.
The
genus
Tulipa
L.
contains
about
150
species,
about
14
of
which
are
found
in
China.
Among
these
there
is
only
one
species
in
Mongolia
and
Inner
Mongolia.
The
two
species
Tulipa
heteropetala
and
Tulipa
uniflora
(L.)
Besser
ex
Baker
have
the
clos-
est
relationship
with
this
new
species.
The
distri-
bution
of
Tulipa
heteropetala
is
in
the
north
of
Xin-
jiang,
Siberia,
and
Central
Asia.
Tulipa
uniflora
occurs
in
Siberia
and
Central
Asia.
The
new
species
was
referred
to
Tulipa
hetero-
petala
in
Mao
(1980)
and
Tulipa
uniflora
in
Ninbu
(1994).
After
comparing
the
features
among
these
three
species
of
Tulipa
the
author
thought
this
spe-
cies
was
new
to
science.
The
new
species
was
distributed
solitarily
over
a
sandy
crack
of
volcanic
cone
in
the
XilinGol
Meng
of
Inner
Mongolia.
The
species
is
now
extinct
at
the
type
locality
because
of
heavy
grazing
pressure.
Tulipa
mongolica
Y.
Z.
Zhao,
sp.
nov.
TYPE:
Chi-
na.
Inner
Mongolia:
XilinGol
Meng,
Baiyinxi-
le,
20
May
1979,
Shu-run
Liu
395
(holotype,
HIMC;
isotypes,
HIMC).
Figure
1A—C.
Haec
species
T
heteropetalae
Ledebour
affinis,
sed
ab
ea
perianthii
segmentis
internis
oblongo-obovatis,
2.5-4.5
cm
longis
apice
acutis;
filamentis
2.5-3.0-plo
longioribus
quam
antheris
atque
pistillo
longiore
quam
staminibus
dif-
fert.
Perennial,
10-25
cm
tall.
Bulb
ovate,
1-2
cm
diam.;
skin
of
bulb
papery,
dark
brown,
pubescent
on
inner
surface;
stem
glabrous.
Leaves
2,
closely
alternate,
narrowly
lanceolate,
8-11
cm
long,
4-9
mm
wide,
often
curved
outward,
glabrous.
Flower
single,
terminal;
perianth
segments
6,
in
two
series
of
3,
yellow,
2.5-4.5
cm
long,
4-8
mm
wide,
apices
acute;
outer
perianth
segments
3,
narrowly
oblan-
ceolate,
externally
green-purple;
inner
perianth
3,
oblong-obovate,
same
length
as
above,
8-15
mm
wide;
stamens
6,
in
two
series
with
3
long,
to
2.4
cm,
and
3
short,
to
2.2
cm
long;
filaments
2.5-3.0
times
as
long
as
anthers,
yellow,
glabrous,
widened
below
their
mid-point,
gradually
narrowed
toward
both
sides;
anther
yellow,
narrowly
oblong,
4-6
mm
long;
pistil
exceeding
the
stamens;
style
1
cm
long.
Fruit
and
seed
not
found.
Habitat.
On
stony
hillside
fields.
Distribution.
Inner
Mongolia,
XilinGol
Meng,
Baiyinxile.
Paratype.
CHINA.
Inner
Mongolia:
same
locality
as
type
collection,
8
May
1965,
Zhi-jie
Xu
413
(HIMC).
The
chief
morphological
differences
between
the
new
species
and
two
similar
species
are
summa-
rized
in
the
following
key
couplet.
The
three
spe-
cies
of
Tulipa
also
share
in
common
a
yellow
flower,
long
style,
and
pubescence
on
the
top
of
the
inner
skin
of
the
bulb.
KEY
TO
THE
THREE
TULIPA
SPECIES
IN
INNER
MONGOLIA,
CHINA
la.
Only
the
base
of
the
filaments
of
stamens
wid-
ened,
narrowing
to
the
apex
1.
T
uniflora
(L.)
Besser
ex
Baker
lb.
Filaments
widened
from
the
mid-point
down,
then
narrowing
on
both
sides
of
the
filament.
2a.
Stamen
filaments
equal
in
length
to
anthers
or
slightly
longer;
pistil
shorter
than
stamens;
in-
ner
perianth
ovate
to
rhombic,
2-2.5
cm
long,
apex
acuminate;
leaves
2,
loosely
separate
2
T
heteropetala
Ledebour
2b.
Stamen
filaments
2.5-3.0
times
as
long
as
anther;
pistil
longer
than
stamens;
inner
perianth
oblong
to
obovate,
2.5-4.5
cm
long,
apex
acute;
leaves
2,
closely
alternate
. .
3.
T
mongolica
Y.
Z.
Zhao
Paratype.
CHINA.
Inner
Mongolia:
XilinGol
Meng,
Baiyinxile,
8
May
1965,
Zhi-jie
Xu
413
(HIMC).
Literature
Cited
Mao,
Zu-mei.
1980.
Tulipa.
Pp.
86-97
in
Flora
Reipub-
licae
Popularis
Sinicae,
Vol.
14.
Science
Press,
Beijing.
Ninbu.
1994.
Flora
Intramongolica,
2nd
ed.
Typis
Intra-
mongolicae
Popularis
Hohhot.
5:
469.
NovoN
13:
277-278.
2003.
278
Novon
41
2
cm
1
rm
Figure
1.
Tulipa
mongolica
Y.
Z.
Zhao.
—A.
Plant.
—B.
Skin
of
bulb.
—C.
Part
of
flower.