A New Species of Lespedeza (Leguminosae) from China and Japan

2007·1.1 MB·English

by  Tomoyuki Nemoto

植物研究雑誌
J.Jpn.Bot.
82:222–231(2007)
A New Species of Lespedeza (Leguminosae) from China and Japan
Tomoyuki NEMOTOa, Hiroyoshi OHASHIb and Takayuki ITOHc
aDepartmentofBasicSciences,FacultyofScienceandEngineering,IshinomakiSenshuUniversity,
1,Shinmito,Minamisakai,Ishinomaki,986-8586JAPAN;
E-mail:[email protected]
bBotanicalGarden,TohokuUniversity,Sendai,980-0862JAPAN;
c ,Niihama,792- JAPAN
(ReceivedonMarch3,2007)
A new species of Lespedeza (Leguminosae: Papilionoideae) from China and Japan
isdescribedasL.lichiyuniaeT.Nemoto,H.Ohashi&T.Itoh.Thisnewspeciesisattrib-
utedtosubgenusLespedezabecauseofthepresenceofcleistogamousflowersandfruits.
The species is similar to L. cuneata and L. juncea, but differs from them in having pink
or pale purple flowers, under surface of leaflets densely covered with longer sericeous
hairs and cleistogamous pods relatively longer than calyx and densely pubescent. The
species occurs mainly in inland provinces of central China, but is distributed also in
coastalChinaandinJapan.PlantsofthespeciesinJapanarepresumedtohavebeenim-
ported from China as a mixture of roadside cover plants together with Lespedeza
caraganae, L. davidii, L. davurica, L. floribunda and L. inschanica.
Key words: China, Japan, Leguminosae, Lespedeza lichiyuniae, new species.
The genus Lespedeza (Leguminosae) con- BM, G, GH, K, KUN, MO, P and SZ. These
sists of ca. 35 species and is distributed specimens are distinguished from these spe-
mainlyintemperateAsiaandNorthAmerica cies by under surface of leaflets densely cov-
(Ohashi 2005). The genus has been divided ered with sericeous hairs and cleistogamous
into two subgenera, Macrolespedeza and pods with shorter calyx; distinguished from
Lespedeza (Ohashi 1999, 2005). The subge- L. cuneata by calyx with wider lobes, and
nus Lespedeza has been characterized by the densely pubescent, whitish-brown cleistoga-
presence of cleistogamous flowers as well as mous pods; and distinguished from L. juncea
normal chasmogamous ones. In China 26 by shorter pedicels and shorter claws of
species are recognized in the genus of which wings and keel-petals (cf. Fig. 4 in Nemoto
14 are attributed to subgenus Lespedeza (Li and Ohashi 1999).
and Chen 1995). In 2003 and 2004 the last author collected
In the course of revising Chinese Les- many specimens of Lespedeza in Tokushima
pedeza based on herbarium specimens since Prefecture in Shikoku, Japan and sent them
1997, the two senior authors noticed that to the middle author for determination
there are many specimens collected in China together with several photographs taken in
that belong to an unnamed species but are their habitats. These specimens are morpho-
usually misidentified as L. cuneata (Dum.- logically very similar to those of the Chinese
Cours.) G. Don, or less frequently as L. specimens that were misidentified in the her-
juncea (L. f.) Pers. in such herbaria as A, baria cited above. Moreover, flower colour
—222—
August2007 JournalofJapaneseBotanyVol.82No.4 223
of the plants collected in Shikoku is dark davurica (Laxm.) Schindl., L. floribunda
bluish purple in dry specimens and pink or Bunge, L. inschanica (Maxim.) Schindl.
pale purple in fresh material (Fig. 1). The These are all exotic species and are pre-
flower colour is quite different from those of sumed to have been imported from China in
L. cuneata and L. juncea. Wehave therefore seed-mixwhichwassowedasroadsidecover
considered that the specimens in question to prevent soil erosion of cut slopes (Ohashi
collected in China and Japan represent a new and Nemoto 2003, Ohashi, Nemoto and Itoh
species of Lespedeza. The species belongs to 2003, 2004). Lespedeza lichiyuniae is there-
the subgenus Lespedeza, because they bear fore considered to have been imported from
cleistogamous pods. China at first together with those other spe-
During examination of specimens kept in cies of Lespedeza cited above and then natu-
PE in March 2006, the senior author found ralized in Japan.
that Chi-yun Li ((cid:1)Ji-yun Li), a Chinese tax-
onomist and one of the authors of the genus Lespedeza lichiyuniae T. Nemoto, H.
LespedezaintheFloraReipublicaePopularis Ohashi & T. Itoh, sp. nov. [Figs. 2, 3]
Sinicae (Li and Chen 1995), recognized our Haec species nova L. cuneatae et L.
new species as a new form of Lespedeza junceae affinis, sed foliolis subtus pilis
cuneata and annotated specimens most of sericeis longioribus dense obsitis, floribus
which are referable to our new species as “L. purpureis, et leguminibus cleistogami
cuneata f. purpurea C.Y. Li” in 1981 or calycibus 2–3plo longioribus differt; a L.
1986. However, she has not yet published cuneata calycum lobis lateralibus anguste-
the name of this form. Although unpub- ovatis vel ovatis, et leguminibus dense
lished, she selected holotype and isotype pubescentibus et albo-brunneolis differt; a L.
specimens (China, Sichuan, S. Mu-li, alt. junceapedicellisbrevioribusetunguealaeet
3000 m, 7 Aug. 1937, T. T. Yü 7661, PE) carinae longitudine 1/2 laminae partibus
among those specimens she referred as f. breviore differt.
purpurea. However, these type specimens Typus: JAPAN, Shikoku, Tokushima
are referable to L. cuneata f. cuneata. In Pref., Miyoshi-gun, Yamashiro-cho, Urano-
order to avoid probable future confusion we tani Forestry Road–Nokanoike-yama, N.W.
abandon her unpublished name for our new slope of Nokanoike-yama, on roadside, alt.
(cid:1) (cid:1)(cid:1) (cid:1)
species. We therefore name the new species ca. 970–1007 m, 33°51 29.0 N 133°41 19.4
(cid:1)(cid:1)
L. lichiyuniae in honor of Chi-yun Li who E, 24 Sep. 2005, T. Nemoto & T. Itoh,
belongs to the Herbarium, Institute of 30060 (Holotype–TUS; Isotype–TUS, PE).
Applied Ecology, Academia Sinica (IFP). Erectorascendingherbof50–120cmtall.
Lespedeza lichiyuniae appears to be dis- Stems more or less woody at base,
tributed mainly in such inland provinces of ascending- or appressed-pubescent along the
central China as Chongqing, Gansu, ridge. Leaves alternate, stipulate, petiolate,
Guizhou, Henan, Hubei, Hunan, Shaanxi, 3-foliolate. Stipules persistent, linearly trian-
Sichuan and Yunnan, with a few specimens gular, 1–4 mm long, glabrous or sparsely
collected also from such coastal provinces as appressed-pubescent. Petioles (1.5–)2–15
Anhui and Jiangsu. mm long, appressed-pubescent; pulvini
The Japanese specimens of Lespedeza 0.5–1 mm long, ascending- or appressed-
lichiyuniae were collected from roadsides pubescent. Terminal leaflets slightly larger
along recently constructed forestry roads, than lateral ones, narrowly obovate, 6.5–28
and plants of the species grew together with mm long, 2–7.7 mm wide, cuneate at base,
L. caraganae Bunge, L. davidii Franch., L. obtuse or truncate with a point at apex,
224 植物研究雑誌 第82巻 第4号 平成19年8月
Fig.1. Habit(A),flowers(B)andinflorescence(C)of Lespedezalichiyuniae (JAPAN,Shikoku,
Tokushima Pref., Yamashiro-cho, N.W. slope of Nokanoike-yama, alt. ca. 970–1007 m, 24
Sep.2005).
August2007 JournalofJapaneseBotanyVol.82No.4 225
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l' "哩札制，~蜘唖tlto.Kl-'ln批個柚1#'oy.師、晶、、、、山ず曽叫
8，:対・\\1"'叫・''A1..'L.引.!'.S 帥I.-Ci埼)'I"NIa酬.t.・IInI1A1.ね草.7・n・n引川1>~刊t恥副)."t官cr!定"'分.(.，. 割\，Itta.c-銑・>~P0・E.-.・1.;!-α.J1 tJ71，")，t. . J・
に骨'P1凶fn'\N刊>r:i叩，: 川Ih>I\&"0. ).. / 0咽 ，( ..tI.，I 1M ，/f 、?J)
Fig.2. HolotypespecimenofLespedezalichiyuniaeT.Nemoto,H.Ohashi&T.Itoh(T.Nemoto
&T.Itoh30060,TUS).
226 植物研究雑誌 第82巻 第4号 平成19年8月
11/
、
l\-..1 I I
J
B
:母二
J
-
L
Fig.3. FlowerandimmaturecleistogamouspodofLespedezalichiyuniae(Voucher:Holotype,T.
Nemoto&T.Itoh30060,TUS).A,primarybract;B,secondarybract;C,bracteoles;D,flower;
E,calyxdissectedandopened(viewfrominside);F,standard;G,wingandkeel-petalshowing
the relative length of both petals; H, wing; I, keel-petal; J, staminal tube surrounding a pistil;
K, basal fenestrae of staminal tube (view from vexillary side); L, pistil; M, immature
cleistogamouspodwithcalyx.Scalebar(cid:1)0.5mm(A,BandK),1mm(C–J,L,M).
August2007 JournalofJapaneseBotanyVol.82No.4 227
Fig.4. Mature chasmogamous and cleistogamous pods and seeds of Lespedeza
lichiyuniae (Voucher: T. Nemoto 30112, TUS). A, chasmogamous pod with
calyx; B, chasmogamous pod; C, chasmogamous seeds; D, cleistogamous pod
withcalyx;E,cleistogamouspod;F,cleistogamousseeds.Scalebar(cid:1)1mm.
glabrous above and rather densely densely tube, sparsely appressed-pubescent.
sericeous beneath, pulvinus 0.5–0.8 mm Flowers 6.5–8 mm long. Calyx 4-lobed,
long, the rachis 0.5–3.5 mm long, more or 3–4 mm long, appressed- or ascending-
less appressed- or ascending-pubescent; lat- pubescent or sericeous outside; tube ca. 1.2
eral leaflets narrowly obovate, 4.6–24 mm mm long; upper lobe ovate or triangular to
long, 1.6–7 mm wide, sessile, pulvinate of broadly ovate, 2-toothed at apex, teeth 1/2 or
0.5–0.8 mm long. 2/3 of the length of the lobe; lateral and low-
Inflorescences a lateral, (1–)2–4 flowered est calyx lobes narrowly ovate to ovate, 1.8
short pseudoraceme, shortly pedunculate of –2.4 mm long, acute at apex. Corolla twice
0.7–2(–5)mmlong,2floweredatanode,as- or more longer than calyx, pink or pale pur-
cending-pubescent; primary bracts narrowly ple; standard pale purple with dark purple
to broadly triangular, 0.5–1 mm long, nectar guide, slightly longer to shorter than
sparsely appressed-pubescent; secondary or almost equal to wings and keel-petals, 7–
bracts narrowly ovate to broadly triangular, 7.5 mm long, inflexed-auriculate at base,
0.5–1 mm long, sparsely appressed-pubes- lamina 6–6.5 mm long, 5–5.5 mm wide,
cent (Fig. 1C). Pedicels 1–2 mm long in broadly elliptic to circular, obtuse with a
flower, ascending-pubescent; bracteoles 2 at point at apex, abruptly narrowed to claw,
base of calyx, ovate to narrowly ovate, 0.8– claw ca. 1 mm long; wings pale purplish
1.3(–1.7) mm long, shorter than or almost white, slightly shorter than keel-petals, 6.7–
equal to (rarely slightly longer than) calyx 7.3 mm long, lamina 5–5.7 mm long, 2–2.3
228 植物研究雑誌 第82巻 第4号 平成19年8月
Fig.5. Distributionof Lespedezalichiyuniae inChina(●)andJapan(★).
mm wide, narrowly obovate to obovate, gamous ones, ca. 2.4 mm long, 1.7–2.0 mm
obtuse at apex, slightly auriculate at base, wide, two to three times longer than calyx,
claw 1.5–1.8 mm long; keel-petals pale pur- circular to broadly elliptical, densely
plish white with dark purple tips, 7.2–7.6 appressed- or ascending-pubescent (Figs.
mm long, lamina 5.3–5.7 mm long, 2.2–2.7 4A, B, D, E).
mmwide,obliquatelyobovateorelliptic,ob- Seeds pale green, ca. 2 mm long, ca. 1.4
tuseatapex,abruptlynarrowedtoclaw,claw mm wide, ca. 1.1 mm in thickness, ovate;
ca. 2 mm long. Stamens 10, diadelphous, ca. hilum rim arillate, ca. 0.3 mm in diameter,
7.5 mm long, curved upwards in distal part, circular to ovate (Figs. 4C, F).
staminal tube with a pair of fenestrae at base Japanese name: Akabana-medohagi (nom.
on vexillary side, anthers uniform, ovate ca. nov.)
0.3 mm long. Pistil ca. 8 mm long; ovary Distribution: China (Anhui, Chongqing,
narrowlyelliptic,shortlystipitate,appressed- Gansu, Guizhou, Henan, Hubei, Hunan,
orascending-pubescentondorsalandventral Jiangsu, Shaanxi, Sichuan and Yunnan),
margins and at distal part, uniovulate; style most specimens were collected between 500
filamentous,curvedupwardindistalpart,as- m and 1700 m above the sea, but someone
cending- or appressed-pubescent; stigma ter- from c. 250 m or above 2000 m or 3000 m;
minal, slightly ciliate and capitate. naturalized in Japan (Tokushima Pref. in
Cleistogamous flowers borne in axillary Shikoku) (Fig. 5).
inflorescences of shortly pedunculate less Habitat: In mountain valley or sunny
than 1 mm long, 2–4 flowered. mountain slope; in shrub, grass or wasted
Pods whitish brown. Chasmogamous pods place; on sandy riverside or roadside.
elliptical with long remnant of style, densely Phenology: Flowering in August to Sep-
appressed- or ascending-pubescent; cleisto- tember (–October). Fruiting in (September–)
August2007 JournalofJapaneseBotanyVol.82No.4 229
October to November. 830–1040 m, 13 Aug. 1956, Sichuan-Guizhou Exped.
Other specimens examined: CHINA. Anhui. 854 (PE). Locality unknown, 22 Aug. 1936, L.-F.
Quanjiao Xian, Machang, Longshan, 14 Sep. 1951, Deng 90714 (PE). Henan. Northern slope of Mt.
Statio Orientali-Sinensis 3651 (PE). Chongqing. Funiushan, alt. 1240 m, 22 Aug. 1958, J.-Q. Fu 288
Chengkou Xian: Baichishan, alt. 1650 m, 11 Sep. (KUN).LuanchuanXian,Shifangyuan,23Aug.1960,
1958,T.-L.Dai102561(MO,PE);Liaozikou,alt.595 Henan Exped. 2109 (PE). Lushi, alt. 1470 m, 8 Oct.
m, 12 Oct. 1958, T.-L. Dai 103678 (MO, PE, SZ); 1958, J.-Q. Fu 2039 (KUN). Nanzhao Xian, Xialuo
Qiganshan,Liaozikou,alt.500m,31Aug.1958,T.-L. Ping, Sep. 1956, Henan Forestry Department 1497
Dai 102262 (MO, PE, SZ); near Yanmai Xiang, alt. (PE). Song Xian: Longyuwan, alt. 850 m, 24 Aug.
1400m,6Sep.1958,T.-L.Dai104432(MO,PE,SZ). 1960, Henan Exped. (K.-C. Kuan & T.-L. Dai) 2233
Cheongqing Shi to Chengdu, 3 Oct. 1938, T.-N. Liou (PE);MiaoziXiang,HenanExped.1822(PE).Yiyang
9836 (PE). Fenjie Xian: Xinglong, Liangfengya, alt. Xian ((cid:1)Ruyang Xian), coll. unknown 23685 (PE).
1300m,24Sep.1964,H.-F.Zhou&H.-Y.Su111120 Loc. unknown, C.-L. Tang 1690 (KUN). Hubei.
(PE, SZ); Xinhe Ercao, alt. 1100 m, 21 Oct. 1964, Chienshih Xian ((cid:1)Jinshe Xian), 20 Sep. 1934, H.-C.
Sichuan Univ. E. Sichuan Exp. (H.-F. Zhou & H.-Y. Chow1715(PE).FangXian:Guanyindong,alt.880m,
Su) 111554 (SZ); Zhuyuan Xiang, alt. 850 m, 6 Aug. 23 Aug. 1938, K.-M. Liou 9290 (PE); Shiguluoxi
1958, H.-F. Zhou 26900 (PE). Nanchuan Xian ((cid:1) River,alt.1000m.,K.-R.Lius.n.(PE).JianshiXian,
Nanchuan Shi): Banheyaowan, alt. 980 m, 30 Oct. 15Sep.1951,L.-Y.Dai&Z.-H.Qian1206(PE).Jun
1957,G.-F.Li64908(KUN0641135);JinfoShan,alt. Xian ((cid:1)Danjiangkou Shi): Caodian, alt. 1640 m, 14
600 m, 26 Oct. 1957, G.-F. Li 64908 (SZ); Aug. 1959, J.-Q. Xing 12406 (SZ), alt. 1110 m, 17
Sanquanceng,alt.600m,26Oct.1957,G.-F.Li64908 Aug. 1959, J.-Q. Xing 14733 (SZ); Wudangshan, alt.
(in part !) (PE 00307444) and G.-F. Li 64908 (KUN 700m,coll.unknown(PE00379060).Hsingshanhsien
0641131). Wushan Xian: Zhugong, alt. 1280 m, 26 ((cid:1)XingshanXian),invalley,wastedplace,alt.250m,
Aug. 1964, H.-F. Zhou & H.-Y. Su 110303 (PE, SZ); 19 Sep. 1939, T.-P. Wang 11978 (KUN, PE). Ichang:
Zhuxian Xiang, Zhangjiawan, alt. 1400–1500 m, 18 Feb. 1887, A. Henry 1509, 2500 (K); 9/10, E.H.
Oct.1958,G.-H.Yang59870(PE);1958,G.-H.Yang Wilson 1716 (A, K); Yichang, roadside, 9 July 1939,
59879 (KUN). Wuxi Xian: Zhongke Xiang, T.-P. Wang 11283 (PE). Shennongjia Linqu, alt. 1500
Chaoyanping, alt. 1300 m, 5 Sep. 1958, G.-H. Yang m, 26 Aug. 1971, Hubei Bot. Exped. 25548 (PE).
65251 (KUN); Zhonglian Xiang, Chaoyang Ping, alt. ZhuxiXian:Quanxi,alt.1000m,14May1959,P.-Y.
1700 m, 6 Sep. 1958, G.-H. Yang 65251 (PE). Li 9326 (KUN); Shuangzhuping, alt. 1200 m, 13 Sep.
Gansu. Cheng Xian: Dianchuan, 29 Sep. 1951, T.-P. 1959, P.-Y. Li 9808 (KUN); alt. 1680 m, on forest
Wang14986(KUN);DianchuanZhen((cid:1)Hengchuan), marginonmountainslope,29Sep.1991,Z.Zheng91-
Majiashan, 28 Sep. 1951, T.-P. Wang 14986 (PE). 208 (KUN). Zigui Xian, suburb to Xianghan, 1 July
Chengchuan Zhen, alt. 1700 m, 3 Sep. 1958, Y.-C. 1957, G.-X. Fu & Z.-S. Zhang 706 (PE). Wudang
Hou492(PE).HuiXian,alt.740m,19Sep.1958,Z.- Shan,JiudaoHe,alt.1000m,22Aug.1959,J.-Q.Xing
Y. Chang 997 (KUN). Kang Xian, alt. 1200 m, 19 14342 (SZ). Locality unknown: T.-P. Wang 12038
Aug. 1939, W.-Y. Hsia 6166 (PE). Tianshui Shi: (PE); K.-R. Liu 701 (PE); A. Henry 2500 (BM).
Baiyanglin Work Station, on roadside of valley, alt. Hunan. Huayuan Xian, Donmaku, Taodangwu, alt.
1310 m, 8 Aug. 1951, K.-M. Liou 10337 (KUN, MO, 700 m, 19 Oct. 1958, L.-H. Liu 10098 (PE). Sangzhi
PE);DongchaXiang,Yangshan,alt.1600m,15Aug. Xian, Zhuyeping, alt. 500 m, Sep. 14, Sangzhi Xian
1951,K.-M.Liou10465(KUN,MO,PE);Dangchuan, Forest Department 1512 (KUN). Jiangsu. Jurong Shi:
alt. 1550 m, 23 Aug. 1963, Q.-X. Li 1406 (PE). Wen Maoshan,9Oct.1956,F.-B.Deng3433(PE);Paohwa-
Xian: Beikou, Weijiaji, 15 Sep. 1959, Z.-Y. Zhang shan, 9 Sep. 1933, M. Chen 974 (PE). Near Nanjing,
15304 (PE); Beikou, alt. 850 m, 13 Sep. 1959, Z.-Y. Xi-Xiahill,26Oct.1982,K.Yao8460(MO).Shaanxi.
Zhang 15033 (PE); Tielou Gongshe, alt. 1500 m, 7 BaojiShi:Wei-heRiver,alt.605m,31July1939,T.-
Oct. 1973, J.-X. Yang & Z.-X. Hu 3393 (PE); Tielou N. Liou & C. Wang 9 (PE); Mt. Miao-wang-san, Fr.
(?),alt.1400m,7Oct.1958,Y.-C.Hou992(PE);alt. Hugh sn. (BM). Chenggu Xian, Beishan, Shiyanping,
650 m, 3 June 1930, Hopkinson 371 (PE). Locality alt.650m,K.-T.Fu5398(PE).FopingXian:Hozhenzi
unknown, T.-T. Li 607 (PE). Guizhou. West side of Xiang, alt. 1050 m, 14 Sep. 1958, X.-M. Chang 569
Anshun City, alt. 1300 m, 19 Sep. 1959, Anshun (KUN);LiangheXiang,alt.500m,27Aug.1998,W.-
Exped.1966(KUN,PE).ChishuiShi,MaotaiCun,27 Q. Li 550 (MO). Fu Xian ((cid:1)Hu Xian), Laoyuxi-he
Sep 1930, P.-C. Tsoong 85 (PE, PE). Huaxi Qu, River, Dazhuang Ping, 9 Sep. 1951, P.-C. Kuo 927
SchoolofAgriculture,alt.1300m,2Aug.1958,Z.-Y. (PE). Hanzhong Shi, alt. 550 m, J.-W. Wang & Z.-C.
Cao 123 (PE). Zunyi Shi, near Fenghuangshan, alt. Shi 57 (PE). Liuba Xian, Zaomulan, alt. 1040 m, 2
230 植物研究雑誌 第82巻 第4号 平成19年8月
Aug. 1939, T.-N. Liou & C. Wang 32 (PE). Lüeyang Xian, Niuchang Gongshe, alt. 1900 m, 18 Sep. 1979,
Xian, Luotuoxiang–Lianghekou, alt. 670 m, 1 Nov. D.-D. Tao 792057 (KUN). Locality unknown: E.E.
1958, C.-L. Tang 890 (KUN). Mian Xian: Laocheng Maire 288/1914 (BM); G. Forrest 14595 (BM, K).
Xiang,alt.610m,28Aug.1952,K.-J.Fu1952(MO); Province unknown. Chine Septentrionale, 20 Aug.
15 Oct. 1958, X.-M. Chang 781 (KUN). Mian Xian: 1919,R.P.Licent5838(P).
Chengruo Xiang, alt. 610 m, 28 Aug. 1952, K.-T. Fu JAPAN. Miyagi. Sendai City, cultivated (origin:
5552 (PE); Maoerkow, 1 July 1942, K.-T. Fu 3773 JAPAN: Shikoku, Tokushima Pref., Miyoshi-gun,
(KUN, PE), 3775 (KUN); Yuandunzi, alt. 700 m, 18 Yamashiro-cho,Busshi–Awayama,E.slopeofTengu-
Oct. 1958, P.-Y. Li 660 (KUN, SZ). Pingli, alt. 1200 dake,alt.600–650m,33°55(cid:1)12.4(cid:1)(cid:1)N,133°42(cid:1)40.2(cid:1)(cid:1)E):
m, 3 Sep. 1959, P.-Y. Li 9068 (KUN). Shiquan Xian, 25 Sep. 2006, T. Nemoto 30110 (TUS); 7 Nov. 2006,
Puhe Gongshe, alt. 840 m: 25 June 1959, J.-Q. Xing T.Nemoto30111,30112,30113,30114,30115(TUS).
9054(SZ);27June1959,J.-Q.Xing9503(SZ).Taibai Tokushima. Miyoshi-gun, Yamashiro-cho: Busshi–
Qu,Hongganshan,29Aug.1958,S.-H.Luo15(KUN, Awayama, E. slope of Tengu-dake, alt. 600–650 m,
SZ). Taipaishan ((cid:1)Taibaishan), vicinity of 33°55(cid:1)12.4(cid:1)(cid:1)N 133°42(cid:1)40.2(cid:1)(cid:1)E 28Aug. 2005, T. Itoh
Haopingszu,24Aug.1937:T.-N.Liou&P.-C.Tsoong 25201 (TUS), 23 Sep. 2005, T. Nemoto & T. Itoh
238 (KUN); alt. 1300 m, T.-N. Liou & P.-C. Tsoong 30022, 30023, 30024, 30028, 30030, 30034, 30035,
239 (PE, SZ). Yangpingguan, alt. 1200 m: 13 Sep. 30036, 30076 (TUS); Nokanoike-yama, Shimomyou–
1958, Y.-L. Qiao 138 (SZ); 23 Sep. 1958, Y.-L. Qiao Awayama,4Oct.2003,T.Itoh23104(TUS),20Sep.
137 (SZ). Yijun, Houlieqiao, Hejing, alt. 3900 f., 8 2004, T. Itoh 26001, 26002, 26003, 26004 (TUS), 6
Sep. 1958, Z.-L. Xiao 546 (KUN, PE). Zhouzhi: Nov. 2004, T. Itoh 26005 (TUS); Uranotani Forestry
Shaliangzi, alt. 800 m, 8 Sep. 1999, Zhu et al. 1874 Road–Nokanoike-yama, N.W. slope of Nokanoike-
(PE); Taibeishan, Houzhingzhi ((cid:1)Houzhenzi), alt. yama, alt. ca. 970–1007 m, 33°51(cid:1)29.0(cid:1)(cid:1)N 133°41(cid:1)
1200 m, 28 July 1999, Zhu et al. 1773 (PE). Locality 19.4(cid:1)(cid:1)E, 24 Sep. 2005, T. Nemoto & T. Itoh 30066,
unknown, C.-H. Wang 416 (PE). Sichuan. Baoxing 30078, 30080, 30086, 30087, 30088, 30094, 30095
Xian (Pao-hsing-hsien), Dengchigou, alt. 1600 m, 2 (TUS).
Sep.1963,ChuanxiExped.(K.-C.Kuan,W.-T.Wang
et al.) 2806 (PE); alt. 1800 m, 25 Aug. 1936, K.-L. We thank the curators of A, BM, G, GH,
Chü 3671 (K, PE); 1925, K.-L. Chü 3801 (PE). W.
K, KUN, MO, P, PE and SZ for allowing us
Lung-an-hsien, 16 Aug. 1931, W.-C. Cheng 2872 (K,
PE). Maowen Xian ((cid:1)Mao Xian), Tumen Qu, alt. to examine their herbarium collections. The
1400 m, 18 Aug. 1975, coll. unknown 8786 (PE). senior two authors express their gratitude to
MianyangXian((cid:1)MianyangShi):outsideofNanmen, I.Al-Shehbaz,D.E.Boufford,X.-F.Gao,G.
29Sep.1930,T.-N.Liou11689(PE);3Oct.1939,T.- P. Lewis, B. Shrire, M. de L. Rico-Arce, E.
N. Liou 1171 (SZ). Pingwu Xian, on the way to
W. Wood, A. R. Vivkery, S.-K. Wu and X.-
Nanping, alt. 2100 m, 21 Sep. 1986, C.-Y. Wu 9-448
Y. Zhu for their help on his research in their
(KUN). Pingwu Xian–Nanba, alt. 2400 m, 21 Sep.
herbaria, and to J. Murata and Y. Endo for
1986, P.-C. Li 24 (PE). Ascending to Tsing-chuan-fin
Hsien((cid:1)QingchuanXian),alt.1700m,24Aug.1930, their cooperation on his visiting KUN, MO
F.-T. Wang 22319 (A, PE). Tzutunghsien ((cid:1)Tzutung and SZ. This study is partly supported by the
Xian), alt. 500 m, 29 June 1938, T.-P. Wang 9382 Inamori Foundation (1997 to T. Nemoto)
(PE). Wanyuan Xian ((cid:1)Wanyuan Shi): Dazhu Qu,
and a Grant-in-Aid for Scientific Research
MiaoziXiang,9Aug.1959,P.-Y.Li4598(PE);river-
from the Japanese Ministry of Education,
side, alt. 650 m, 19 Sep. 1935, K.-L. Chü 2197 (PE).
Yuehsi-hsien ((cid:1)Yuexi Xian), 15 Sep. 1930, W.-P. Culture, Science, Sports and Technology
Fang 4991 (PE, K). Southern border of Kansuh ((cid:1) (No. 16570084 to T. Nemoto, No. 15405013
Gansu), alt. 1200 m, 4 Sep. 1930, F.-T. Wang 22527 to Y. Endo, No. 17255004 to J. Murata).
(GH, KUN, PE). Locality unknown, Liou & Wang 32
(PE). Yunnan. Duqin Xian: Huan-fu-ping, Atun-tze,
References
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(A, KUN, PE); Tsekou, Sep. 1895, R.P. Soulié s. n. K. (ed.), Flora Reipublicae Popularis Sinicae 41:
(BM), J.A. Soulié s. n. (K). La-Kou, alt. 2450, Oct. 131–159.SciencePress,Beijing(inChinese).
1913, E. E. Maire s. n. (G). Tong Tchouan, 2700 m, Nemoto T. and Ohashi H. 1999. A new species of
Aug.1912,E.E.Maires.n.(G).Zhaotong,Zhenxiong Lespedeza (Leguminosae) from Japan. J. Jpn. Bot.
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74:268–281. Lespedeza (Leguminosae: Papilionoideae). J. Jpn.
OhashiH.1999.Thegenera,tribesandsubfamiliesof Bot.78:42–47.
JapaneseLeguminosae.Sci.Rep.TohokuUniv.4th , .andItohT.2003.Fournaturalizedspecies
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2005.TribeDesmodieae.In:LewisG.,SchrireB., 78:50–54(inJapanesewithEnglishsummary).
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根本智行a, 大橋広好b, 伊藤隆之c：中国および日
本産マメ科ハギ属の1新種
マメ科ハギ属の 1 新種, アカバナメドハギ 紫色であり, メドハギやシベリアメドハギとは明
LespedezalichiyuniaeT.Nemoto,H.Ohashi&T.Itoh らかに異なる ｢アカバナ｣ であることがここで初
を記載した. この種は, 閉鎖花をつけることから めて確認され, 新たな識別形質を付け加えること
ハギ (メドハギ) 亜属に帰属し, 形態的にはメド ができた. アカバナメドハギの生育する徳島県山
ハギL. cuneata (Dum.-Cours.) G. Donやシベリア 城町の林道沿線には, 上述の帰化したハギ属5種
メドハギL. juncea (L. f.) Pers.に類似する. このた も生育している.
め, これまで採集された標本は, 特にメドハギと アカバナメドハギは, 中国中部の内陸部 (陜西,
同定されて標本庫に収蔵されていることが多かっ 甘粛, 河南, 湖北, 湖南, 四川, 貴州, 雲南各省
た. しかし, アカバナメドハギは, 小葉裏の毛が および重慶市) を中心に, 沿岸部の安徽, 江蘇省
より長く密であること, 閉鎖花の果実ががくより にも希に産する. 一方, 日本での分布は, 中国の
2〜3倍長いことでそれら2種から識別すること これらの分布地のいずれかから種子として移入さ
ができ, さらに, がく片が狭卵形〜卵形で幅がよ れ, 法面緑化のために他のハギ属の種の種子とと
り広いこと, および成熟果実が淡褐色で毛が密生 もに播種されたものが野生化したものであろう.
していることでメドハギから, また, 小花柄が 2006年3月に北京の中国科学院植物研究所標
1〜2 mmと短いこと, 翼弁と竜骨弁のつめが短 本館 (PE) でアカバナメドハギの標本調査を行っ
いことでシベリアメドハギから, 形態的に識別す た. その際, アカバナメドハギに相当する標本の
ることができる. 一部は, Li Chi-yun (Li Ji-yunと記述される場合も
著者の大橋と根本は中国産ハギ属の分類学的再 ある) (李 冀云) 氏によって1981年と1986年に
検討を行ってきた. その過程で国外の標本館 (A, Lespedeza cuneata f. purpurea C. Y. Liと同定され
BM, G, GH, K, KUN, MO, P, SZ) に収蔵されてい ていることが判明した. しかし, この新品種の学
る標本のなかに上述のアカバナメドハギの形態的 名は未発表であり, 彼女が著者の1人である ｢中
差異を認識し, 新種としての発表にむけて準備を 国植物誌｣ (第41巻, 1995年) のハギ属の記述
進めきた. 一方, 著者の伊藤は, 四国で近年造成 中にもこの品種名は掲載されていない. また, 未
された林道沿線で多数の未知のハギ属植物を発見 発表でありながら, 彼女はホロタイプとアイソタ
し, 大橋のもとに標本の同定を依頼していた. こ イプを指定している. しかし, これらの標本はメ
れらの標本には, 日本には本来自生しないホソバ ドハギL.cuneata f.cuneataであり, アカバナメド
メドハギ L. caraganae Bunge, オクシモハギ L. ハギではない. したがって, アカバナメドハギの
davidiiFranch.,オオバメドハギL.davurica(Laxm.) 学名には, 将来予想される命名上の混乱を避ける
Schindl., トウクサハギL. floribunda Bunge, カラ ため, ここではLi氏の用いた形容語は採用せず,
メドハギL. inschanica (Maxim.) Schindl.が含まれ Lespededza lichiyuniaeを提案した. この種形容語
ており, いずれも林道の法面緑化のために中国か は, アカバナメドハギを最初に認識したLi Chi-
ら移入された種子から野生化したものであること yun氏 (中国科学院瀋陽応用生態研究所) に献名
を著者らがすでに本誌 (78: 50–54; 79: 378–380) したものである.
に報告した. ところが, その後伊藤から送られた (a石巻専修大学理工学部基礎理学科,
標本の中に, アカバナメドハギに相当する標本が b東北大学植物園津田記念館,
含まれていることが判明した. また, 同時に伊藤 c愛媛県新居浜市 )
から送られた写真から, その問題の植物は花が赤