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Home , Atraphaxis, Bistorta, Fallopia, Koenigia, Muehlenbeckia, Persicaria

植物研究雑誌 J. J. Jpn. Bo t. 72: 72: 154-161 (1 997)

New Combinations of East Asian of s. l.

Koji Koji YONEKURA and Hiroyoshi OHASHI

Biological Biological Institute ，Graduate School of Science ， Tohoku University ， Aoba ，Sendai ，Miyagi ， 980-77 JAPAN (Received (Received on January 1， 1997)

Classification Classification systems of P olygonum s. 1. applied to East Asian species are compared ， andcircumscriptions andcircumscriptions of andFallopia are discussed. New combinations forthe species species of Aconogonon (one variety of A. molle) ， (five species) ， (one species species and five varieties) and Persicari α(four species and two varieties) previously included included in Polygonum s. 1. in East Asia are proposed.

Polygonum L. (1753) is characterized by are some disaccordance between two systems herbaceous herbaceous or undershrubby habit ，4-5 parted proposed by Haraldson (1 978) and Ronse persistent persistent perianths ，6-8 ，2 or 3 styles Decraene and Akeroyd (1 988) in the generic usually usually with capitate stigmata ，and lenticular circumscription of some genera ，especially or or trigonous achenes (Bentham and Hooker those of P ersicaria Mill. and F allopia Adans. 1880 ，Dammer 1894). Boundaries between The Asian species of Polygonum in the Polygonum and its allied genera (i.e. ， broad sense have been classified into many ， ， ， small genera ， but circumscriptions of some Polygonella ，etc.) are ，however ，notclear. Many genera are different from each other as shown botanists botanists have tried to constract a natural sys- in Table 1. On the other hand; the traditional tem by dividing Polygonum into more natural system ofkeepingPolygonum s. 1. as adistinct smaller smaller genera and consequently various sys- has also been firmly adopted in floras in tems have been proposed (e.g. ， Gross 1913a ， East Asia (Steward 1930 ，Ohwi 1953 ，1965 ， 1913b ，Nakai 1926 ， Roberty and Vautier 1956 ， Kitamura and Murata 1961 ， Li 1983 ，1993 ， Sojak Sojak 1974 ， Haraldson 1978 ， Tzvelev 1987 ， Kuo et a1. 1996). We agree with them to divide Ronse Decraene and Akeroyd 1988). Polygonum s. l. into several small genera. In Recent studies on morphology and anatomy this paper ，various systems hitherto applied to of of Polygonum S. 1. by Haraldson (1 978) and by East Asian species of Polygonum s. l. are Ronse Decraene and Akeroyd (1 988) revealed compared in the viewpoint of dividing this that that this genus is not monophyletic ，and the genus ，and discussed about the problem of diagnostic diagnostic characters for Polygonum s. 1. are circumscriptions of genera Persicaria and considered considered to be plesiomorphic rather than Fallopia. New combinations of East Asian apomorphic. apomorphic. Haraldson (1 978) and Ronse species based on this concept are proposed. Decraene and Akeroyd (1 988) therefore over- 1. Circumscription of Persicaria Mill. tumed previous concepts of Polygonum s. 1. Haraldson (1 978) included Aconogonon ， and divided it into eight genera in three tribes Bistorta ，Koenigia ，and Persicaria (had been orfive orfive generain twotribes ，respectively. There thought to be unrelated genera) into the tribe

一-154 一一 June 1997 Jouma1 of Japanese Botany Vo 1. 72 No. 3 155

Table Table 1. Comparison of systems of Polygonum s. l. with representative Asian species

Hedberg (1946) autier

P. P. chillense P. P. perfoliatum P. P. sellticosum P. P. sagittatum P. P. orientale P. P. amphibium P. P. persicaria Polygonum P. 戸liforme

P.pO ちか加ぽyst ωα ， ch 仰J P. P. divaricatum P. P. weyrichii P. P. sibiricum P. P. bistorta P. P. cOllvolvulus P. P. mult 抑orum P. P. cuspidatum P. P. aviculare P. P.

Hara (1966) I S吋ak (1974) I Haraldson (1978) I Tzvelev (1987)

Koenigia Koenigia

Hatched Hatched areas indicate Persicaria as a genus. X; did not treated by the author(s) in the paper. illegitimate *; illegitimate names.

Persicarieae Persicarieae on the basis of some distinct ana- Koenigia andPersic αria as distinct genera and tomical tomical characters of and stem. Her treated Aconogonon and Bistorta as sections opinion opinion was supported by Ronse Decraene of the genus P ersicaria. They also included and Akeroyd (1988) ， but they recognized genera and H αrpagoc α rpus into 156 156 植物研究雑誌第72 巻第3号 平成9年6月

Persicarieae ，which were regarded by ent with base of filaments of inner wheel Haraldson Haraldson (1978) as a member of the tribe (Ronse Decraene and Akeroyd 1988; Ronse Polygoneae Polygoneae and Coccolobeae respectively. Decraene and Smets 1991) ， and the tricolporate Aconogonon ，Bistorta ，Koenigia ，and pollen grains with minutely punctate and ersicaria P ersicaria had often been treated as distinct microspinulose exine scruptures and with genera genera from Polygonum L. before Haraldson densely packed collumerae (Nowicke and (1978) (1978) (e.g. ， Gross 1913a ，1913b ， Nakai 1926 ， Skvarla 1987). Moreover ，no hybrids have Hara 1966 ， Sojak 1974). In addition ， such been reported between Bistorta and related small small groups are regarded to be distinct as genera. In this reason we recognize Bistorta as Antenoron Raf. by Steward (1930 ， as Tovara a distinct genus from P ersicari α. Adans. ，now nom. r吋ic.) ， Roberty and Vautier Polygonum filiforme ， P. neofiliforme of (1954) (1954) and Hara (1 966) ， and Truellum Hout t. eastem Asia ， and P. virginianum of eastem by Sojak (1974) ， but these were not treated as N orth America have been frequently treated as distinct distinct by Haraldson (1 978) because their constituting an independent genus Antenoron diagnostic diagnostic characters were regarded as insuf- Raf. because of its unique hook -like persistent ficient ficient for generic division. On the other hand ， styles ， reduced number of and stamens ， Tzvelev Tzvelev (1987) splitted P ersicaria in the sense and distinct 12-colpate pollen aperture type of of Haraldson into five genera ，i.e. ， Antenoron (Nakai 1926 ， Steward 1930 ， Roberty and Raf. ，Cephalophilon Spach ， Chylocalyx Hass k. Vautier 1956 ，Hara 1966). Gross morphologi- exMiq. ，Persicaria s. st r.， and TruellumHout t. cal characters of these species are ，however ， Tzvelev Tzvelev (1987) also proposed a new genus very similar to the genus P ersicaria and some Knorringia Knorringia (Czu k.) Tzve l. basedonPolygonum microcharacters used to distinguish these spe- sibiricum sibiricum Laxm. and P. pamilicum Korsh. ， cies from P ersicaria have proved unclear which were regarded as a member of (Haraldson 1978). Moreover ， according to a Polygonum sec t. Aconogonon (Steward 1930) cladistic analysis made by Hong (1 993) ， or or Aconogonon (Hara 1966). Hong (1989) P ersicaria includingAntenoron and some other supported supported this generic status and treated this small groups recognized by Tzvelev (1 987) as genus genus as belonging to a tribe Coccolobeae ， not distinct genera constituted a monophyletic to to Persicarieae. group. Hong (1 989 ，1992 ， 1993) revealed the bor- As discussed above ，we follow Haraldson der der between Aconogonon and Persicaria (1 978) and Hong (1993) and recognized clearer clearer than that of Ronse Decraene and Aconogonon (exceptKnorringi α) andBistorta Akeroyd (1988) and recognizedAconogonon as distinct genera from Persicaria ， but such as as a distinct genus. We agree with his opinion groups as Antenoron ，Cephalophilon ，and for for the treatment of Aconogonon. Ronse Truellum are treated as sections of Persicaria Decraene Decraene and Akeroyd (1 988) treatedBistorta and not regarded as distinct genera. as as a section of Persicaria ，butBistorta has not 2. Circumscription of F allopia Adanson only only distinct gross morphology ，i.e. ， the Fallopia Adans. in the broad sense is char- lignified lignified or prostrate stem and the acterized by existence of extrafloral nectaries ， spike-like spike-like pseudoraceme ，which have been keeled outer tepals ，dendricular vena- traditionally traditionally used as the diagnostic characters tion ，filaments dilated at base and usually of of this genus ， but also some other characteris- covered with papillae ， and fimbriate (in tics tics such as the anatomical character of leaf some species) (Ronse Decraene and Akeroyd petiole petiole (Haraldson 1978) ， the nectaries coher- 1988). Other various generic names ，i.e. ， June June 1997 Joumal of Japanese Botany Vo l. 72 No. 3 157

Reynoutri α (1 777) ，Bilderdyki α (1 827) ， E. Hima 1. 68 (1 966) ， ut Aconogonum. Tiniaria Tiniaria (1 837) ， or Pleuropterus (1 848) had Polygonum molle D. Don ，Prod r. F1. Nepa 1. been used to this group before Holub (1970) 72 (1 825). mentioned the priority of Fallopia (1 763). Persicaria mollis (D. Don) H. Gross in Three different concepts have been proposed Bull. Geogr. Bo t. 23: 31 (1 913). on the classification of F αllopia after Nakai va r. paniculatum (Blume) Y onekura & H. (1 926) (Table 1): Nakai (1 926) recognized Ohashi ，comb. nov. three three generaBilderdykia ， P leuropterus Turcz. ， Polygonum paniculatum Blume ，B りdr. 533 and Hout t. in this group on the (1 825). basis basis of gross morphology (twining vs. erect Aconogonon paniculatum (Blume) habit) ， shape of stigma and pollen scrupture ， Haraldson in Symb. Bo t. Upsa 1. 22(2): 69 and his treatment was followed by Hara (1966) (1 978). and Kitagawa (1979 ， 1982). On the other hand ， Polygonum frondosum Meisn. in DC. Hedberg (1946) and Ronse Decraene and Prod r. 14: 137 (1 856). Akeroyd (1 988) united these genera and rec- Polygonum paniculatum va r.斤 ondosum ognized ognized one genus in this group. Haraldson (Meisn.) Stewardin Contr. Gray Herb. Harvard (1978) (1978) recQgnized two genera F αllopia and Univ.88: 196 (1930). Reynoutria Reynoutria on the basis of gross mo 中hology ， Aconogonon molle va r. frondosum anatomical anatomical character and stigma shape ，and (Meisn.) H. Hara ， F 1. E. Hima 1. 68 (1 966); in Tzvelev (1 987) followed her treatmen t. Hara et a1.， Enum. F1. P1. Nepa13: 187 (1 982); Ronse Decraene and Akeroyd (1988) united Hong in Symb. Bo t. Upsa 1. 30(2): 87 (1 992). Fallopia Fallopia (in the sense of Haraldson (1 978)) Dist r. Himalayas to China. and Reynoutria under Fallopia s. 1.， because Aconogonon molle (D. Don) H. Hara ，oc- the the distinctions of both genera are mostly of cu 汀 ing in the Himalayas ，SW China ，lndia ， Sri vegetative vegetative characters and a hybrid between Lanka and Indonesia ， is very variable in the these these two genera is found. We support their hairiness of stems and leaves ，and according to opln lO n. Hong (1 992) ，is separated into four varieties. F allopia s. 1. is classified into the tribe Var. 斤ondosum is the variety including the Polgoneae by Ronse Decraene and Akeroyd typeofPolygonumpaniculatumBlume ， hence (1 988) ， while Haraldson treated it to be be- this name should be changed because of the longing longing to the tribe Coccolobeae. We follow priority of autonym. Haraldson (1978) because not only evidence Bistorta coriacea (Sam.) Yonekura & H. given given by her but also existence of extrafloral Ohashi ，comb. nov. nectaries. nectaries. The nectary shows relation to Polygonum coriaceum Sam. in Hand.- Muehlenbeckia Muehlenbeckia in the tribe Coccolobeae in the Mazz. ，Symb. Sin. 2: 174 (1 929). sense sense of Haraldson ， as mentioned by Lersten Distr. SW. China. and Kurtis (1 992). Ronse Decraene and Bistorta honanensis (H. W. Kung) Akeroyd (1 988) did not compare Fallopia to Y onekura & H. Ohashi ，comb. nov. the the genera of Coccolobeae ，and the reason Polygonum honanense H. W. Kung in Chin. they they included this genus in the tribe Polygoneae J. Bo t. 1(1): 14 ，p 1. 4 (1 936). seems to be not clear. Dist r. Central China. 3. 3. New combinations for Asian species of Bistorta paleacea (Wall. ex Hoo k. f.) Polygonum s. 1. y onekura & H. Ohashi ，comb. nov. Aconogonon molle (D. Don) H. Hara ， F 1. Polygonump αleaceumWal 1. [Ca t. no.1684 158 158 植物研究雑誌第72 巻第3号 平成9年6 月

(1 828) ，nom. nud.; Meisn. in Wall. P1. As. Rar. Distr. Japan (lzu Is1s.) 3: 3: 54 (1 832) ，nom. nud.] ex Hoo k. f. ，F 1. Bri t. va r. uzenensis (Honda) Y onekura & H. 1nd. 1nd. 5: 32 (1 836). Ohashi ，comb. nov. Dist r. Assam to SW. China. Reynoutri α japonica va r. uzenensis Honda Bistorta Bistorta purpureonervosa (A. J. Li) in Bo t. Mag. Tokyo 46: 675 (1 932); Kitagawa Yonekura & H. Ohashi ，comb. nov. in Satake et al.， Wild F1. Jap. 2: 24 (1 982) ， ut Polygonum purpureonervosum A. J. Li in uzensls. Bul 1. Bo t. Res. (Harbin) 15: 416 (1 995). R. uzenensis (Honda) Honda in Bo t. Mag. Dist r. SW. China (Sichuan). Tokyo 49: 791 (1935). Bistorta Bistorta taipaishanensis (H. W. Kung) Dist r. N. Honshu and Japan Sea side region Y onekura & H. Ohashi ，comb. nov. of C. Honshu. Polygonum taipaishanense H. W. Kung in Fallopia multi f1 0ra (Thunb. ex Murray) Chin. Chin. J. Bo t. 1(1): 13 ，p1. 3 (1 936). Haraldson in Symb. Bo t. Upsa l. 22(2): 77 Distr. Distr. Central China. (1978) ，cum auc t. epith. Thunb. Fallopia Fallopia forbesii (Hance) Y onekura & H. Polygonum multiflorum Thunb. ex Murray ， Ohashi ，comb. nov. Sys t. Veg. ed. 14 ，379 (1784); Thunb. ， F l. Jap. Polygonum forbesii Hance in Joum. Bo t. 169 (1 784); Ohwi ， F l. Jap. 474 (1 953) ，cum 21: 21: 100 (1 883). auc t. epith. Thunb.; Kitamura & Murata ，Co 1. Reynoutriaforbesii Reynoutriaforbesii (Hance) T. Yamaz. inJ. 11 1. Herb. Pl. Jap. (Choripe t.) 314 (1 961) ，cum Jpn. Jpn. Bo t. 69: 180 (1 994) ，utfargesii. auc t. epith. Thunb. Distr. Distr. Korea and China. Pleuropterus multiflorus (Thunb. ex Fallopiajaponica Fallopiajaponica (Hout t.) Ronse Decraene Murray) Turcz. ex Nakai in Fedde. Rep. 13: in in Ronse Decraene & Akeroyd in Bo t. J. Linn. 267 (1914) ，cum auc t. epith. Thunb. Soc. Soc. 98: 369 (1988). va r. ciliinervis (Nakai) Yonekura & H. Reynoutria Hout t.， Na t. His t. 8: Ohashi ，comb. nov. 639 ，p 1. 51 (1 777); Kitagawa in Satake et al.， P leuropterus ciliinervis N akai inPedde Rep. Wild Fl. Jap. 2: 24 (1 982). 13: 267 (1 914). Polygonum cuspidatum Siebold & Zucc. in Polygonum mult 伊orum va r. ciliinerve Abh. Baye r. Acad. Wiss. Math. Phys. C 1. 4 (3): (Nakai) Stewardin Cont r. Gray Herb. Harvard 208 (1 846); Ohwi in Fl. Jap. 474 (1 953); Univ. 88: 97 (1 930). Kitamura & Murata ，Co l. 111. Herb. Pl. Jap. Distr. Korea and N. China. (Choripe t.) 316 (1961). va r. hypoleuca (Ohwi) Yonekura & H. va r. hachidyoensis (Honda) Y onekura & Ohashi ，comb. nov. H. H. Ohashi ，comb. nov. P leuropterus hypoleucus N akai in Rigakkai Polygonum hachidyoense Makino inJ. Jap. 24: 294 (1926) ，nom. nud. Bo t. 5: 21 (1 928). Polygonum hypoleucum [Kudo & Sasaki in Reynoutria hachidyoensis (Makino) Ann. Rep. Taihoku Bo t. Gard. 1: 26 (1931) ， Honda in Bo t. Mag. Tokyo 49: 1 (1 935). nom. nud.] OhwiinActaPhytotax. Geobo t. 7: Reynoutria Reynoutria hachidyoensis var. terminalis 130 (1 938). Honda in Bo t. Mag. Tokyo 49: 695 (1 935) ， ut Aconogonon hypoleucum (Ohwi) Sojak in va r. terminalis (Honda) Honda. Preslia 46: 151 (1 974) ，com auc t. epith. Kudo Reynoutri αjα ponic αva r. terminalis & Sasaki. Honda ，1. c. 49: 695 (1 935) ， pro syn.; Kitagawa Polygonum multiflorum va r. hypoleucum in in Satake et al.， Wild Fl. Jap. 2: 24 (1 982). (Ohwi) Tang S. Liu ， S. S. Ying & M. J. Lai ， F l. June June 1997 Jouma1 of Japanese Botany Vo l. 72 No. 3 159

Taiwan2: 274 (1 976); Kuoeta 1. inF 1. Taiwan Persicaria palmata (Dunn) Y onekura & 2nd ed. 2: 309 (1996). H. Ohashi ，comb. nov. Dist r. Taiwan. Polygonum palm αtum Dunn in Kew Bu11. Fallopia Fallopia sachalinensis (F. Schmidt) Ronse 1942: 341 (1 912). Decraene in Ronse Decraene & Akeroyd Bo t. Polygonum pseudopalmatum Hoo in Acta J. J. Linn. Soc. 98: 369 (1 988). Phytotax. Sin. 1: 193 (1 951). Polygonum sachalinense F. Schmidt in Dist r. Assam to S. China. Maxim. ，Mem. Acad. Sci. S t. -Petersb. 9: 233 (Buch.-Ham. ex D. (1 859); Ohwi ，F1. Jap. 474 (1 953); Kitamura& Don) H. Gross in Eng 1. Bo t. Jahrb. 19: 313 Murata ，Co 1. 111. Herb. P1. Jap. (Choripe t.) 316 (1 913). (1 961). Polygonum posumbu Buch.-Ham. ex D. Reynoutria (F. Schmidt) Don ，Prod r. F1. Nepa l. 71 (1 825); Kitamura & Nakai [Rep. Veg. Dageletls 1. 18 (1 919) ，comb. 乱1urata ，Co 1. 11 1. Herb. P1. Jap. (Choripe t.) nud.; nud.; Mori ，Enum. P1. Co r. 135 (1 922) ，comb. 53rd ed. 311 (1 984). nud.] nud.] in Rigakkai 24: 293 (1 926); Miyabe & Polygonum caespitosum Blume ，Bijdr. 532 Kudo in J. Fac. Agr. Hokkaido Imp. Univ. (1 825); Steward in Cont r. Gray Herb. Harvard 26(4): 26(4): 505 (1 934); Kitagawa in Satake et a1. Univ. 88: 66 (1 930). (ed.) (ed.) Wild F1. Jap. 2: 24 (1 982) ，cum auc t. Polygonum caespitosum y. (var.) 1αxi- epith. epith. N akai. florum Meisn. in Miquel ，Ann. Mus. Bo t. var. var. intermedia (Tatewaki) Y onekura & H. Lugd.-Ba t. 2: 57 (1 865); Ohwi ， F 1. Jap. 471 Ohashi ，comb. nov. (1 953). Polygonum sach αlinense va r. intermedium Persicari αposumbu var.laxiflora (Meisn.) Tatewaki in Res. Rep. Exp. Fo r. Hokkaido H. Hara ， F 1. E. Hima l. 634 ， in adno t. (1966). Imp. Univ. 7: 190 (1 932). Polygonum yokusaianum Makino in Bo t. Reynoutria Reynoutria sachalinensis va r. intermedia Mag. Tokyo 28: 116 (1 914). (Tatewaki) (Tatewaki) Tatewaki ex Miyabe & Kudo in J. Polygonum caespitosum subsp. yoku- Fac. Fac. Ag r. Hokkaido Imp. Univ. 26(4): 505 saianum (Makino) Danser in Bu11. Jard. Bo t. (1 934). Buitenzorg 3(8): 151 (1 927); Kitamura & Dist r. N. Hokkaido. Murata ，Co 1. 11 1. Herb. Pl. Jap. (Choripe t.) 311 Persicaria Persicaria cliopolitana (Hance) Y onekura (1 961). & H. Ohashi ，comb. nov. P ersicaria yokusaiana (Makino) N akai in Polygonum cliopolitanum Hance in Ann. Rigakkai 24: 301 (1 926); Kitagawa in Satake Sci. Sci. Na t. V. 5: 238 (1 866). et a1. (ed.) Wild F1. Jap. 2: 23 (1 982). Dist r. Central to S. China. va r. stenophylla (Makino) Y onekura & H. Persicariajucunda (Meisn.) Yonekura & Ohashi ，comb. nov. H. Ohashi ，comb. nov. Polygonum yokusaianum va r. stenophyllum Polygonumjucundun Meisn. ，Monogr. Gen. Makino in Bo t. Mag. Tokyo 28: 117 (1 914). Polyg. Polyg. Prodr. 71 (1 826). Persicaria posumbu var. lax 仲間 form. Distr. Distr. Central to S. China. stenophylla (Makino) H. Hara ， F 1. E. Hima 1. Persicaria Persicaria Ii micola (Sam.) Y onekura & H. 634 ， in adno t. (1 966). Ohashi ，comb. nov. Polygonum posumbu va r. stenophyllum Polygonum limicola Sam. in Hand.-Mazz. (Makino) Murata in Acta Phytotax. Geobo t. Symb. Sin. 2: 178 (1 929). 32: 50 (1 981); Kitamura & Murata ， Co11. 11 1. Dist r. SW. China. Herb. Pl. Jap. (Choripe t.) 53rd ed. 311 (1984). 160 160 植物研究雑誌第72 巻第3号 平成9 年6 月

Distr. Distr. Japan (Pacific Ocean Side) and S. orientale. Bull. Geogr. Bo t. 23: 7-32. 一一一一 1919. . in Loesener T. ，Prodromus Fl o- Korea. Korea. rae Tsingtauensis. Beih. Bo t. Centralb. 37(2): 111-115.

Persicaria Persicaria senticosa (加 leisn.) H. Gross in Hara H. 1966. Taxonomic comparison between co 汀 esponding Loes. Loes. inBeih. Bo t. Centralb. 37(2): 113 (1 919); taxa of Spermatophyta in Eastem Himalaya and Japan. In: Hara H. (compiled) ， Flora of Eastem Himalaya. pp. 627- Kitagawa in Satake et al.， Wild Fl. Jap. 2: 20 657. University ofTokyo ， Tokyo. (1982). (1982). Haraldson K. 1978. Anatomy and in Polygonaceae Chylocalyx Chylocalyx senticosus Meisn. in Miquel ， subfam. Meisn. emend. Jaretzky. Symb. Bo t. Upsa l. 22(2): 1-93. Ann. Mus. Bo t. Lugd.-Ba t. 2: 65 (1865). Hedberg O. 1946. Pollen morphology in the genus Polygonum Polygonum senticosum (恥1eisn.) Franch. & s. la t. and its taxonomic significance. Svensk. Bo t. Tidskr. Sav. ，Enum. Pl. Jap. 1: 401 (1 875); Ohwi ， F l. 40: 371 -4 04. Holub J. 1970. F α， llopia Adans. 1763 instead of Bilderdykia Jap. Jap. 466 (1953); Kitamura & Murata ，Co11. 111. Dum. 1827. Geobo t. Phytotax. Praha 6: 171-177. Herb. Herb. Pl. Jap. (Choripe t.) 304 (1961). Hong S.-P. 1989. Knorringia (=Aconogonon sect. Knorringi α) ， va r. sagittifolia (H. Levei11e & Vaniot) a new genus in the Polygonaceae. Nord. J. Bo t. 9: 343-357. 一一一一一 1992. Taxonomy of the genus Aconogonon y onekura & H. Ohashi ，comb. nov. (Polygonaceae) in Himalaya and adjacent regions. Acta Polygonum sagittifolium H. Leveille & Univ. Upsa l.， Symb. Bo t. Upsa l. 30(2). 118 pp. Vaniot Vaniot in Bull. Geog r. Bo t. 11: 342 (1902). 一一一一一一 1993. Reconsideration of the generic status of Rubrivena Rubrivena (Polygonaceae ，Persicarieae). Pl. Sys t. Evo l. Persicaria Persicaria sagittifolia (H. Lev. & Vaniot) 186: 95-122. H. Gross in Eng l. Bo t. Jahrb. 49: 248 (1 913) ， Jaretzky R. 1925. Beitrage zur Systematik der Polygonaceae comb. nud. unter Berucksichtigung des Oxymethylanthrachinon- vorkommens. Feddes Rep. 22: 49-83. Polygonum sen tI cosum var. sagittifolium Kitagawa M. 1979. Neo ・lineamenta florae Manshuricae. 715 (H. (H. Lev. & Vaniot) C.- W. Park in Brittonia 38: pp. Fl ora et Vegetatio Mundi 4. 一一一一- 1982. Po1ygonaceae. In: Satake Y. et al. (ed.) Wild 218 (1 986). Fl owers of Japan. 2: 14 ー26. Heibonsha ，Tokyo (in Japa- Distr. Distr. S. China. nese). Polygonum sagittifolium in S. China is Kitamura S. and Murata G. 196 1. Polygonaceae. Coloured illustrations illustrations of herbaceous plants of Japan (Choripetalae). closely closely related to P. senticosum ， but differs in pp. 293-316. Hoikusha ，Osaka (in Japanese). the the shape of ochrea. We follow Park (1 988) Kuo C. F. ， Liu H. Y. and Yang Y. P. 1996. Polygonum. In: who regarded former as the variety of the Huang ， T. C. (ed.) Fl ora of Taiwan ，2nd ed. 2: 295-313. Taipei. Taipei. latter. latter. LerstenN. R. andKurtisJ.D.1992.FoliaranatomyofPolygonum (Polygonaceae): (Polygonaceae): survey of epidermal and selected intemal We thank Mr. Hideki Nakai ， Biological structures. Pl. Sys t. Evo l. 182: 71-106. Li A. J. 1983.Polygonaceae. In: Wu c. Y. (ed.) FloraXizangica. 1nstitute ， Graduate School of Science ，Tohoku 1: 593-627. Science Press ，Beijing (in Chinese). University ，for helpful comments to some prob- 一一一一一 1993. Polygonaceae. In: Wang W. T. (ed.) Vascular lems in nomenclature. plants of the Hengduan Mountains. 1: 349-369. Science Press ，Be 討ing (in Chinese). Nakai Nakai T. 1926. A new classification of Linnean Polygonum. References References Rigakkai 24: 289-301 (in Japanese). Bentham G. and Hooker J. D. 1880. Ordo CXXXIV. Nowicke J. W. and Skvarla J. J. 1977. Pollen mo 中hologyand Polygonaceae. Polygonaceae. in Genera Plantarum 3( 1): 88-105. London. the relationship of the Plumbaginaceae ，Polygonaceae ，and Dammer U. 1894. Polygonaceae. in Engler ， A. and Plantl ， K. Primulaceae to the order Centrospeηnae. Smiths. Contr. (ed.) (ed.) Die Naturlichen Pflanzenfamilien 3(1): 1-36. Verlag Bo t. 37: 1-64. von Wilhelm Engelmann ，Leipzig. Ohwi J. 1953. Polygonaceae. Flora of Japan. pp. 458 -4 74. Greuter Greuter W. (ed.) 1994. lntemational code ofbotanical nomen- Shibundo ，Tokyo (in Japanese). clature clature (Tokyo code) ， adopted by the fifteenth intemational 一一一一一 1965. Polygonaceae. Fl oraof Japan. rev. ed. pp. 533- botanical botanical congress ，Y okohama ， August-September 1993. 552. Shibundo ，Tokyo (in Japanese). Regnum Vegetabile 13 1. Koeltz Scientific Books ， Park C.- W. 1988. Taxonomy of Polygonum sec t. Echinocaulon K りnigstein. (Polygonaceae). Mem. New York Bo t. Gard. 47: 1-82. Gross Gross H. Beitrage 1913a. zur Kenntnis der Polygonaceen. Bo t. Roberty G. and Vautier S. 1956. Les genres de Polygonacees. Jahrb. Jahrb. Sys t. 49: 234-339. Boissiera 10: 7-128. 一一一一一 1913b. Remarques sur les Polygonacees de l'Asie June June 1997 Jouma1 of Japanese Botany Vo l. 72 No. 3 161

Ronse Decraene L. P. and Akeroyd J. R. 1988. Generic 1imits in S吋ak J. 1974. Bemerkungen zur Gattung Truellum Hout t. Polygonum Polygonum and related genera (Polygonaceae) on the basis (Polygonaceae). Preslia 46: 139-156. of of flora1 characters. Bo t. Joum. Linn. Soc. 98: 321-37 1. Steward A. N. 1930. The Polygoneae in Eastem Asia. Cont r. 一一一一一 and Smets E. 199 1. The floral nectaries of Polygonum Gray Herb. Harvard Univ. 88: 1-129. s. s. l. and related genera (Persicarieae and Polygoneae): Tzvelev N. N. 1987. Notulae de Polygonaceis in flora orientis position ，mo 叩hological nature and semophylesis. Fl ora extrem i. Novi t. Syst. Pl. Vasc. 24: 72-79 (in Russian). 185: 185: 165-185 (1 991).

米倉浩司，大橋広好:東アジア産タデ属(広義) 植物に関する新組合せ タデ属 Polygonum L.を一つの属として扱う見解 その結論に基づきこの属を分割する立場に立った と外部形態上の多様性に基づいていくつかのより 上で，東アジア産のいくつかの種について学名の 小さい属に細分する見解とがある.近年の研究 組み替えを行った. (Haraldson 1978 ，Ronse Decraene and Akerod 1988) 日本産の種については，ハチジョウイタドリ によって，広義のタデ属は異なる 2 または 3 の連に Fallopia japonica va r. hachidyoensis (Honda) 属する植物の寄せ集めであることが明らかとなり， Y onekura & H. Ohashi ，ケイタドリ F. japonic αvar. l つの属にまとめられるべきではないことが主張 uzenensis (Honda) Y onekura & H. Ohashi ，エゾイタ

されている.本論文では今まで東アジア産植物に ドリ Fallopia sachalinens おV 低 intermedi α， (Tatewaki) 適用されてきた様々な体系について比較するとと Y onekura & H. Ohashi ホソバハナタデPersicaria もに，東アジア産タデ類の学名を扱う上において posumbu var. stenophylla (Makino) Yonekura & H. 特に問題となる Persicaria 属と Fallopia 属の範囲に Ohashi の2 変種について新組合せを発表した. ついて検討し，近年の研究結果に基づき論議した. (東北大学大学院理学研究科生物学教室)