Aristolochia longlinensis (Aristolochiaceae), a New Species from Western Guangxi, China

2015·6.8 MB·English

by  Lei Wu

New
Western
a Species from
Aristolochia longlinensis (Aristolochiaceae),
China
Guangxi,
Wu
Lei
Academy
Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region, and the Chinese of
CN-541006, Normal
Republic
Sciences, Guilin, People’s of China; College of Life Sciences, Beijing
[email protected]
Republic
University, Beijing 100875, People’s of China,
Yu-Song Huang, and Yan
Wei-Bin Xu, Liu^
Academy
Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region, and the Chinese of
Sciences, Guilin, 541006, People’s Republic of China.
* Author [email protected]
correspondence:
for
&
Ma
Yan
Abstract. Aristolochia longlinensis Liu L. genus into several small genera. (1989) has
Wu, new scheme
a species from western Guangxi, China, revised the classification based on Aristolo-
is
described and illustrated here. morphologically chia species from eastern and southern Asia, which
It is
most similar to A. cucurbitoides C. F. Liang, with corresponds with the taxonomic perspectives of
which has been taxonomically confused in the past. Duchartre and Schmidt. Further, Gonzalez (1999)
it
new
However, the species can be easily distinguished asserts that inflorescence morphology taxonomi-
is
from by trumpet shape limb
the latter the of flower cally relevant at the infrageneric level.
its
cm Huang
shape According 45
(vs. cylindrical in 4. cucurbitoides), ca. 1.8 to et al. (2003), there are ca.
2-3
mouth mm), which 33
in diameter at the (vs. lobes widely species of Aristolochia in China, of ca. are
mm
X X
20-25 5-7 endemic The name wuana Zhen
deltoid lanceolate), 5 the country. A.
ca. to
(vs. (vs.
& &
2-3 W. Deng
mm). Liu Y. (Liu Deng, 2009) was
F.
name
Key proposed
words: Aristolochia, Aristolochiaceae, China, to replace the superfluous A.
Wu & Wu
lUCN
Red macrocarpa
Guangxi, C. Y. K. ex D. D. Tao,
S.
List.
name
which was blocked by macro-
the earlier A.
new
Aristolochia with approximately 400 species, carpa Duch. This name, however, does not
L.,
the largest genus in the family Aristolochiaceae appear in the recent treatment of Aristolochia in
is
Wu
Xu
(Huang et ah, 2003, 2013; et ah, 2011; et volume 5 of the Flora of China (Huang et ah, 2003).
new
The main
ah, 2013). genus has center of diversity Additional species include four species of
its
in tropical America while the Hengduan mountain- Aristolochia: two from Hainan Island, China (Xu et
ous region in China the secondary one (Ma, 1989). ah, 2011), and two from Guangxi, China (Huang et
is
Wu
Following the classifications of Duchartre (1854, ah, 2013; et 2013), which have been
al.,
1864) and Schmidt the genus divided into recently described and illustrated. Thus, to date,
(1935), is
named
three subgenera on the basis of the morphological there are ca. 50 species of Aristolochia in
gynostemium, and China.
characters of the anthers, cap-
Duch. was
sule. Aristolochia subg. Siphisia (Raf.) In 1975, a novel species of Aristolochia
is
further divided into three sections, namely, Aristo- described as A. cucurbitoides C. F. Liang, based on a
lochia Asterolytes (Duch.) Duch., Aristolochia specimen collected from Tianlin County, Guangxi,
sect.
Hexodon and China However,
Duch., Aristolochia Siphisia (Liang, 1975). the flower of the
sect. sect.
Duch. specimen was and
(Raf.) Aristolochia subg. Aristolochia not fully developed, therefore the
is
similarly partitioned as Aristolochia Aristolo- flower was described as a calyx having three lobes
sect.
chia, Aristolochia Diplolobus (Duch.) Duch., that were lanceolate based on another specimen
sect.
and Aristolochia Gymnolobus (Duch.) Duch. collected from Yangbi County, Yunnan, China
sect.
The
subgenus Para- (Cheng During
third Aristolochia subg. 1988). a study of Aristolochia,
et
is al.,
&
The new
ristolochia (Hutch. Dalziel) 0. C. Schmidt. a striking species morphologically similar A.
to
classifications of Duchartre (1854, 1864) and cucurbitoides was found and described here.
is Its
Schmidt (1935) have been broadly accepted (Ma, flowers are distinctive in both living and herbarium
1989), in contrast to other treatments by Klotzsch specimens, but leaves have been confused with
its
Huber who
and
(1859) (1960, 1985), divide the the latter species.
Novon 490-493. Published on 9 January 2015. 10.3417/2011105
23:
doi:
Wu
Number
Volume
4 491
23, et
al.
2014 Western
from
Aristolochia (Aristolochiaceae)
Guangxi, China
— — —
&
Yan Wu.
Figure Aristolochia longlinensis Liu L. A. Fertile habit. B. Lateral view of flower. C. Flower from front
1.
Yan L0753
view. Photos taken of the paratype Liu IBK) at the type locality in Longlin County.
(
mm
&
X
Yan Wu, 20-25
Aristolochia longlinensis Liu L. sp. nov. deltoideis apice acutis ca. 5 (vs. lanceolatis
X
mm)
5-7 2-3
apice acuminatis,
differt.
TYPE:
Longhuo
China. Guangxi: Longlin County,
Herbs
stems yellow-brown
Township, Diyan 24°34'N, 105°35'E, twining; terete, sparsely
Village, 1
2-8
pubeseent. Petioles em, sparsely villous; leaf
200 m, Wen 00314
7 July 1991, H.-Q. (holotype,
blades tmllate-laneeolate, ovate-laneeolate, or lanee-
IBK;
PE). Eigures
isotype,
2.
1, X
12-20
4-6.5 em, papery, both blade surfaees
olate,
Haec
Liang pubeseent
species Aristolochiae cucurbitoidi C. F. sparsely or abaxially glabreseent; veins
sed ah ea limbo calycis tubaeformi cylindraceo) palmate, in 5 or 6 pairs from base; blade bases
affinis, (vs.
em
cm
ad orem ca. 1.8 diam. 2-3 mm), lobis calycis late aurieulate, with a sinus 1.5-2. 5 deep, blade apex
(vs.
Novon
492
— — —
&
Yan Wu.
Figure Aristolochia longlinensis Liu L. A. Fertile habit. B. Flower from front view. C. Longitudinal section
2.
— —
Drawn
through the flower, showing the internal structure. D. Anthers and gynostemium. E. Gynostemium, view from above.
He
Yan L0753
by from the paratype Liu (IBK).
Q.
S.
cm cm
long acuminate. Flowers axillary, solitary; pedicels surface, ca. 2 long, ca. 1.8 in diam. at the
pendulous, 3-4.5 cm, sparsely pubescent; bracteoles mouth, lobes nearly equal, widely apex
deltoid,
3,
X X
mm, mm; mm;
brown 20-25
ovate, ca. 3 2 densely villous, inserted acute, ca. 5 anthers oblong, ca. 2
near the base of peduncle. Calyx yellowish green, gynostemium 3-lobed. Capsules not seen.
limb purple; tube geniculately curved, externally
and
Habitat
yellowish green, internally purple, abaxially sparsely distribution. Aristolochia longlinen-
X
mm; known
villous; basal portion of tube ca. 20 8 limb sis is only from Longlin County in Guangxi
trumpet-shaped, densely papillate on the inner Province. was collected under open forest domi-
It
Wu
Number
Volume 493
4
23, et
al.
2014 Western
from
Aristolochia (Aristolochiaceae)
Guangxi, China
nated by Lauraceae, Fagaceae, Theaceae, and Acknowledgments. The
authors are grateful
to
Ma
1150 1250 Chenshan
Betulaceae from m. Jinshan (Shanghai Plant Seienee
at altitudes to Prof.
Aeademy
Researeh Chinese
Center, of Seienees) for
lUCN
Red
At
category. present, there are
List eomments, Qiang Zhang
useful to Dr. (IBK) for
known
only seven populations with fewer than He
five
improving the English, and Mr. Shunqing (IBK)
to
eaeh
surviving individuals in population. In addition,
the This study was supported by the
for illustration.
we
during our found farmland and
fieldwork, that
Guangxi
Natural Seienee Foundation, grant no.
were expanding whieh
euealyptus Yan
forests in this area, 010104 and Knowledge
Liu, the Innovation
to
would and
of eourse result in deforestation habitat Program Chinese Aeademy
of the of Seienees, grant
loss for this speeies. This speeies therefore KSCX2-YW-Z-0912, Yan
is
no. Liu.
to
+
Endangered [EN Alabed
assigned
a status of
lUCN
Red
aeeording
C2a(l)], to List eriteria (2001).
Literature Cited
&
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&
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F.
&
has been eolleeted previously, but the speeimens systematies of Aristoloehiaeeae. Geogr. PL 68:
Syst.
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&
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new
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photographing 2003
flowers in
(Fig.
its
2).
speeies from limestone areas in Guangxi, China. Ann.
Aeeording Ma’s
to (1989) elassifieation, Aristolo-
175-178.
Fenn.
Bot.
50(3):
and
chia longlinensis A. cucurbitoides both belong
to
Huber, H. 1960. Zur Abgrenzung der Gattung
Aristolochia
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gynostemium However,
pairs opposite the lobes. A.
lUCN
lUCN. 2001. Red and
Categories
List Criteria,
Pentodon
belongs
cucurbitoides Aristolochia
to seet. lUCN
Version Prepared by the Speeies Survival
3.1.
Klotzseh, based on the eylindrie ealyx limb, and A. Commission. lUCN, Gland, and Cambridge,
Switzerland,
United Kingdom.
longlinensis belongs Aristolochia Nepenthesia
to seet.
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Klotzseh, the obliquely
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name Novon
Chinese
in Aristolochia (Aristoloehiaeeae).
and
woody, the similar leaf shape, the single-flowered
370-371.
19:
However, ean be &
infloreseenees. A. longlinensis A
Ma, 1989. revision oi Aristolochia Linn, from E.
S. S.
J.
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204
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1.8
(vs. eylindrieal), ea. at
&
K. Prantl Die natiirliehen Pflanzenfamilien,
(editors),
2-3
mouth mm), and
the lobes widely deltoid
(vs.
W.
2nd Engelmann,
Vol. 16b, ed. Leipzig.
X
apex aeute laneeolate and aeuminate), 5 &
ea.
(vs. Wu, W. Wei
Xu, 2013.
L., B. G. E. L. Liu. Aristolochia
mm
X
20-25 5-7 2-3
mm).
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&
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