This would have to be one of the most challenging genera to work with. Although the majority of species have been moved to other genera, the taxonomy is still overwhelming (31 synonyms here, 115 synonyms there, 172 synonyms elsewhere) and hard to keep up with. In contrast the vernacular is sparse for most species and a little confused, sometimes totally incorrect.
Polygonum affine D.Don. -> Bistorta affinis (D.Don) Greene
Polygonum amphibium L. -> Persicaria amphibia (L.) Delarbre
Polygonum amplexicaule D.Don -> Bistorta amplexicaulis (D.Don) Greene
Polygonum arenarium Loisel. -> Polygonum bellardii All.
Polygonum arenarium Raf. -> Polygonum aviculare L.
Polygonum arenarium Waldst. & Kit.
Centinodia arenaria (Waldst. & Kit.) Fourr.
CHINESE : 沙生萹蓄 Shā shēng biān xù.
CROATIAN : Pješčani dvornik.
ENGLISH : European knotweed, Leathery knotweed, Lesser red-knotgrass, Sand knotweed.
ESTONIAN : Liiv-kirburohi.
FINNISH : Lusikkatatar.
MACEDONIAN : Песочен троскот Pesočen troskot.
RUSSIAN : Горец песчаный Gorets peschanyy, Спорыш песчаный Sporysh peschanyy.
SWEDISH : Fransk trampört, Pilgrimstrampört.
UKRAINIAN : Спориш пісковий Sporysh piskovyy.
Polygonum arenarium subsp. arenarium
Polygonum aphyllum (Hayne) Krock., Polygonum aviculare var. aphyllum Hayne, Polygonum divaricatum Less., nom. illeg., Polygonum equisetiforme J.Mayer ex Ten, not validly publ., Polygonum junceum Ledeb., Polygonum pseudoarenarium Klokov, Polygonum venantianum Clementi
No commun name found.
Polygonum arenarium subsp. pulchellum (Loisel.) Thell.
Polygonum aviculare subsp. pulchellum (Loisel.) O.Bolòs & Vigo, Polygonum patulum subsp. pulchellum (Loisel.) Leblebici, Polygonum pulchellum Loisel., Polygonum arenarium subsp. janatae (Klokov) Soó, Polygonum debeauxii Le Grand, Polygonum janatae Klokov, Polygonum thevenaei Lesp.
No commun name found.
Polygonum arenastrum Boreau (32 synonyms)
Centinodia microsperma (Jord. ex Boreau) Fourr., Polygonum acetosellum Klokov ex Kom., Polygonum aequale Lindm., Polygonum aviculare var. arenastrum (Boreau) Nyman, Polygonum aviculare var. litorale auct., non (Link) Koch, auct. Aust., Polygonum berteroi Phil., Polygonum calcatum Lindm., Polygonum depressum (Meisn.) Longo, Polygonum ebracteatum Munshi & Javeid, Polygonum lencoranicum Kom., Polygonum maritimum J.Rémy, nom. illeg., Polygonum microspermum Jord. ex Boreau, Polygonum montereyense Brenckle, Polygonum parvulum (Moss) P.D.Sell, Polygonum planum Skvortsov, Polygonum propinquum Ledeb., Polygonum prostratum Skvortsov, nom. illeg., Polygonum pycnophyllum Gand., Polygonum sparsiflorum Vorosch., Polygonum suifunense Vorosch. & N.S.Pavlova
ENGLISH : Prostrate knotweed, Prostrate wireweed.
Polygonum aubertii L.Henry -> Fallopia aubertii (L.Henry) Holub
Polygonum aviculare L. (115 synonyms)
Avicularia vulgaris Didrichs., Centinodia avicularis (L.) Fourr., Centinodium aviculare (L.) Drejer, Centinodium axillare Friche-Joset & Montandon, Polygonum agreste Sumnev., Polygonum aphyllum Krock., Polygonum araraticum Kom., Polygonum aviculare subsp. aviculare, Polygonum aviculare subsp. latifolium Ehrh., not validly publ., Polygonum aviculare subsp. neglectum (Besser) Arcang., Polygonum aviculare var. aviculare, Polygonum aviculare var. vegetum Ledeb., Polygonum heterophyllum Lindm., Polygonum heterophyllum var. rubescens (Small) R.J.Davis, Polygonum monspeliense Thiéb.-Bern. ex Pers., Polygonum neglectum Besser, Polygonum procumbens Gilib., Polygonum retinerve Vorosch., Polygonum rubescens Small, .Polygonum scythicum Klokov, Polygonum striatum K.Koch, Polygonum uruguense H.Gross
AFRIKAANS : Varkgras, Voëlduisendknoop.
ALBANIAN : Bar pate, Bari i oborreve, Nejcë.
ARABIC : البطباط albutbat , الجَنْجَر aljanjar, الجُنْجُر aljunjur, طرنة Batbât, بَطْبَاط الطيور نوع batbat altuyur nawe, بطباط bitibat, شَبَط الغُول Shabat el ghûl, عصا الراعي ‘Assâ er râ'î ((Asa er-ra'i), طرنة Turnah (Torna).
ARMENIAN : Ճնճղապաշար Chnchghapashar, ճնճղկապաշար chnchghkapashar, մատիտեղ թռչնի matitegh t’rrch’ni, ծտապաշար tstapashar.
AZERBAIJANI : Quş qırxbuğumu , قوشاپبهیی Quşəppbəyi, قوش قیرخ بوغومو .
BELARUSIAN : Драсён незаўважаемы Drasion niezaŭvažajemy, Драсён птушыны Drasion ptušyny, Драсён разналісты Drasion raznalisty, Гусятнік Husiatnik, Птушыная грэчка Ptušynaja hrečka, Спары́ш Sparýš, Спарышнік Sparyšnik, Свіная трава Svinaja trava, Свінуха Svinucha, Травяная зелень Travianaja zielień, Зерніца Ziernica.
BULGARIAN : Гъсеница Gŭsenitsa, Пача трева Pacha treva, Обикновена пача трева Obiknovena pacha treva.
CATALAN : Centinòdia, Corretjola, Herba de cent nusos, Meligó, Passacamins, Passacamins comú.
CHINESE : 百节草 Bǎi jié cǎo, 萹蓄 Biǎn xù, 萹蓄 Biān xù (medicinal name), 扁竹 Bian zhú, 扁竹蓼 Bian zhú liǎo, 多茎萹蓄 Duō jīng biān xù, 粉节草 Fěn jiě cáo, 萹 Piān (Taiwan), 竹叶草 Zhú yè cǎo.
CROATIAN : Oputina, Ptičji dvornik, Tròskot.
CZECH j: Rdesno ptačí, Truskavec ptačí.
DANISH : Vejpileurt, Vej-Pileurt.
DUTCH : Gewoon varkensgras, Varkensgras.
ENGLISH : Birdweed, Common knotgrass, Knotweed, Knotgrass, Pigweed, Prostrate knotweed, Prostrate smartweed, Wire weed.*
ESTONIAN : Erilehine linnurohi, Harilik linnurohi.
FINNISH : Isopihatatar, Kotipihatatar, Pihatatar.
FRENCH : Centinode, Herbe à cochon, Renouée des oiseaux, Traînasse.
GERMAN : Echter Vogelknöterich, Vogelknöterich, Vogel-Knöterich.
GREEK : Αρσενικό πολύγωνο Arseniko polygono, Πολύγονον το άρρεν Polýgono to árren, Πολύκομπο Polykombo.
HEBREW : אַרְכּוּבִית arkuvit, עשב קשר ashev kasher, פוליגונום אביקולר poligunom avikoler.
HUNGARIAN : Disznópázsit, Disznóporcsin, Madárkeserűfű, Porcogófű, Porcfű, Porcsin keserűfű, Porcsinfű, Térdkötőfű.
ICELANDIC : Blóðarfi.
ITALIAN : Bistorte aviculare, Bistorta centinodio, Poligono degli uccelli, Centinodia, Correggiola.
JAPANESE : ミチヤナギ Michi yanagi, Michi yanagi, みちやなぎ Michi yanagi, 路柳 Michi yanagi, 庭柳 Niwa yanagi.
KOREAN : 마디풀 madipul.
LATVIAN : Maura sūrene.
LITHUANIAN : Takažolė.
MACEDONIAN : Птичја подворка Ptičja podvorka.
MALAY : Keludah, Rumput keludah (Indonesia), Rumput sembilan sendi, Tumbuhan keludah (Indonesia).
NORWEGIAN : Tungras.
POLISH : Rdest ptasi.
PORTUGUESE : Centonódia, Corriola-bastarda, Erva-da-ferradeira, Erva-da-muda, Erva-da-saúde, Erva-das-galinhas, Erva-dos-passarinhos, Língua-de-perdiz, Persicária-sempre-noiva, Sanguinária, Sanguinha, Sempre-noiva-dos-modernos.
ROMANIAN : Troscot.
RUSSIAN : Горе́ц пти́чий Goréts ptíchiy, Гречиха птичья Grechikha ptich'ya, Спорыш птичий Sporysh ptichiy.
SERBIAN : Пасја трава Pasja trava, Птичја трава Ptičja trava, Троска Troska, Троскот Troskot.
SERBO-CROATIAN : Tròskot.
SLOVAKIAN : Stavikrv vtáčí.
SLOVENIAN : Ptičja dresen.
SPANISH : Centinodia (Argentina), Corregüela de los caminos, Duraznillo (Argentina), Hierba de las calanturas, Hierba de los cien nudos, Hierba nudosa, Hierba rastrera, Lengua de pajaro, Pasto del pollo (Argentina), Pico de gorrión (Mexico), Polígono macho, Sanguinaria mayor, Cien nudos (Argentina).
SWEDISH : Trampört.
TURKISH : Çoban değneği, Çoban dayağı.
UKRAINIAN : Гірчак пташиний Hirchak ptashynyy, Спориш пташиний Sporysh ptashynyy.
VIETNAMESE : Biển súc, Cây biển súc, Cây xương cá, Rau đắng, Xương cá.
*POWO cite the misleading name “pin chook” for this species. This is supposed to be a phonetic rendering of the Chinese 萹蓄 Biān xù, also romanized as biǎn xù or pien hsu.
Polygonum bellardii All. (26 synonyms)
Centinodia bellardii (All.) Fourr., Polygonum arenarium Loisel., nom. illeg., Polygonum aviculare subsp. bellardii (All.) Bonnier & Layens, Polygonum flagellare Spreng., nom. illeg., Polygonum flagelliforme Loisel., Polygonum flavescens Jord. ex Nyman, not validly publ., Polygonum gmelinii Meisn., not validly publ., Polygonum gracile Guss., nom. illeg., Polygonum kitaibelianum Sadler, Polygonum laxiflorum Pall. ex Meisn., not validly publ., Polygonum monspeliense Guss., sensu auct., Polygonum nudum Dulac, Polygonum patulum var. virgatum (Loisel.) Rouy, Polygonum ramiflorum Janka, Polygonum reticulatum K.Koch, Polygonum rubriflorum Friv. ex Meisn., not validly publ., Polygonum strictum Ledeb., nom. illeg., Polygonum tiflisiense Kom., Polygonum virgatum Loisel.
No commun name found.
Polygonum bistorta L. -> Bistorta officinalis Delarbre
Polygonum boreale (Lange) Small
Polygonum aequale subsp. oedocarpum Lindm., Polygonum arenastrum subsp. boreale (Lange) Á.Löve, Polygonum aviculare var. boreale Lange, Polygonum aviculare subsp. boreale (Lange) Karlsson, Polygonum aviculare var. oedocarpum (Lindm.) Dostál, Polygonum islandicum Meisn. ex Small, nom. illeg., Polygonum oedocarpum (Lindm.) P.D.Sell
ENGLISH : Northern knotgrass.
RUSSIAN : Спорыш северный Sporysh severny.
Polygonum aviculare L. subsp. calcatum (Lindm.) Thell. -> Polygonum arenastrum Boreau
Polygonum aviculare L. var. litorale auct. -> Polygonum boreale (Lange) Small
Polygonum calcatum Lindm. -> Polygonum arenastrum Boreau
Polygonum equisetiforme Gren. & Godr. -> Polygonum scoparium Req. ex Loisel.
Polygonum equisetiforme J.Mayer ex Ten. -> Polygonum arenarium subsp. arenarium
Polygonum equisetiforme Sm. (20 synonyms)
Dioctis equisetifolia Raf., nom. illeg. superfl., Polygonum caesaraugustanum Echeandía ex Pau, Polygonum controversum Guss., Polygonum crenatum Ehrenb. ex Meisn., not validly publ., Polygonum decumbens (Sauvage) P.Fourn. ex Vindt, nom. illeg., Polygonum ehrenbergii Meisn., Polygonum marioticum Ehrenb. ex Meisn., not validly publ., Polygonum suffruticosum Salzm. ex Ball, not validly publ., Polygonum todaroi Lojac., Polygonum tumidum Aucher ex Meisn., not validly publ., Polygonum urgellense Sennen
ARABIC : عشبة القرضاب eushbat alqardab.
CZECH : Rdesno přesličkovité, Truskavec přesličkovitý.
ENGLISH : False horsetail, Horse-tail knotweed.
FRENCH : Fausse prêle, Qordaab (Algeria, Egypt).
GREEK : Πολυγόνατος Polygónatos (Cyprus).
HEBREW : אַרְכֻּבִּית שְׁבַטְבַּטִּית arkoobit shevatbatit, ארכובית שבטבטית arkovit shavtavtit.
KOREAN : 개마디풀 gaemadipul.
SPANISH : Corregüela de risco, Hierba de saladar, Siempreviva de mar.
Polygonum hydropiper L. -> Persicaria hydropiper (L.) Delarbre
Polygonum lapathifolium L. -> Persicaria lapathifolia (L.) Delarbre
Polygonum littorale Gren. & Godr. -> Polygonum roberti Loisel.
Polygonum littorale Link -> Polygonum aviculare L.
Polygonum littorale Pers. -> Polygonum maritimum L.
Polygonum littorale (Greene) Fedde -> Bistorta vivipara (L.) Delarbre
Polygonum molle D.Don -> Koenigia mollis(D.Don) T.M.Schust. & Reveal
Polygonum molle Wight -> Koenigia polystachya (Wall. ex Meisn.) T.M.Schust. & Reveal
Polygonum odoratum Lour. -> Persicaria odorata (Lour.) Soják
Polygonum paleaceum Wall. ex Hook.f. -> Bistorta officinalis subsp. officinalis
Polygonum scoparium Req. ex Loisel.
Polygonum bocconei DC. ex Meisn., Polygonum corsicanum Link, Polygonum
equisetiforme Gren. & Godr., Polygonum equisetiforme subsp. scoparium (Req. ex Loisel.) Arcang., Persicaria equisetiformis Sm., Persicaria scoparium Req. ex Loisel.
ENGLISH : Broom knotweed, False horsetail.
FRENCH : Fausse prêle, Persicaria vivace, Renouée à balais.