anchor.diff:  "Wedelia biflora (L.) DC.",4098,"GN","Ogasawara"
   "Amorphophallus kiusianus (Makino) Makino",24254,"GN","Ryukyu"
   "Rhodomyrtus tomentosa (Aiton) Hassk.",5670,"GN","Ryukyu"
  +"Morinda citrifolia L.",4798,"GN","Ryukyu"
   "Rhizophora mucronata Lam.",5681,"GN","Ryukyu"
   "Dendranthema arcticum (L.) Tzvelev subsp. maekawanum Kitam.",177,"BU","Ryukyu"
  -"Morinda citrifolia L.",4798,"GN","Ryukyu"
   "Morinda umbellata L.",4799,"GN","Ogasawara"
  +"Diplazium donianum (Mett.) Tardieu",3865,"GN","Ogasawara"
   "Asplenium cardiophyllum (Hance) Baker",3524,"GD","Ogasawara"
  -"Diplazium donianum (Mett.) Tardieu",3865,"GN","Ogasawara"
   "Wikstroemia retusa A. GrayA. Gray",5537,"GN","Ryukyu"
   "Zanthoxylum nitidum (Roxb.) DC.",5341,"GN","Ryukyu"
   "Lumnitzera racemosa Willd.",5686,"GN","Ryukyu"
   "Rhamnus kanagusukii Makino",5469,"BK","Ryukyu"
   "Lysichiton camtschatcensis (L.) Schott",24629,"GN","Ryukyu"
  -"Buxus liukiuensis (Makino) Makino",5459,"GD","Ryukyu"
  +"Aster liukiuensis (Makino) Makino",5459,"GD","Ryukyu"
   "Chamaesyce sparrmannii (Boiss.) Hurus. ex D. C. Hassall",5306,"GN","Ryukyu"
  +"Vigna marina (Burm.) Merr.",11776,"GN","Ogasawara"
   "Cyrtomium falcatum (L. f.) C. Presl",3553,"GN","Ogasawara"
  -"Vigna marina (Burm.) Merr.",11776,"GN","Ogasawara"
   "Allophylus timorensis (DC.) Blume",5399,"GN","Ryukyu"
  +"Cirsium brevicaule A. Gray var. iriomotense Kitam.",30392,"?","Ryukyu"
  +"Avicennia marina (Forssk.) Vierh.",4890,"GN","Ryukyu"
  +"Rosa bracteata J.C.Wendl.",11480,"GN","Ryukyu"
   "Guettarda speciosa L.",4797,"GN","Ryukyu"
  -"Rosa bracteata J.C.Wendl.",11480,"GN","Ryukyu"
  -"Avicennia marina (Forssk.) Vierh.",4890,"GN","Ryukyu"
  -"Adiantum diaphanum Blume",3442,"GN","Ogasawara"
  +"Ficus virgata Reinw. ex Blume",9786,"GN","Ogasawara"
   "Woodwardia japonica (L. f.) Sm.",3535,"GN","Ogasawara"
   "Crossostephium chinense (L.) Makino",4234,"BK","Ogasawara"
  -"Ficus virgata Reinw. ex Blume",9786,"GN","Ogasawara"
  +"Adiantum diaphanum Blume",3442,"GN","Ogasawara"
   "Emilia sonchifolia (L.) DC.",4130,"GN","Ogasawara"
   "Dipteris conjugata Reinw.",3899,"GN","Ryukyu"
   "Callicarpa oshimensis Hayata var. iriomotensis Masamune",457,"BK","Ryukyu"
  +"Lygodium microphyllum (Cav.) R. Br.",3347,"GN","Ryukyu"
  +"Freycinetia formosana Hemsl.",30102,"GN","Ryukyu"
   "Begonia fenicis Merr.",5627,"GN","Ryukyu"
   "Acrostichum aureum L.",3456,"GN","Ryukyu"
  -"Freycinetia formosana Hemsl.",30102,"GN","Ryukyu"
  -"Lygodium microphyllum (Cav.) R. Br.",3347,"GN","Ryukyu"
  +"Bredia yaeyamensis (Matsum.) H. L. Li",5677,"BK","Ryukyu"
  +"Arundina graminifolia (D. Don) Hochr.",28883,"GN","Ryukyu"
   "Mallotus paniculatus (Lam.) M{uu}ll. Arg.",5297,"GN","Ryukyu"
  -"Arundina graminifolia (D. Don) Hochr.",28883,"GN","Ryukyu"
  -"Bredia yaeyamensis (Matsum.) H. L. Li",5677,"BK","Ryukyu"
   "Equisetum sylvaticum L.",3296,"GN","Hokkaido"
  +"Sonneratia alba Sm.",5671,"GN","Ryukyu"
  +"Barringtonia asiatica (L.) Kurz",5672,"GN","Ryukyu"
   "Hydrangea chinensis Maxim. var. koidzuraiana H.Ohba et S.Akiyama",11229,"GD","Ryukyu"
   "Osmanthus heterophyllus (G. Don) P. S. Green",4634,"BU","Ryukyu"
  -"Barringtonia asiatica (L.) Kurz",5672,"GN","Ryukyu"
  -"Sonneratia alba Sm.",5671,"GN","Ryukyu"
   "Quercus gilva Blume",9737,"GN","Ryukyu"
   "Sorbus matsumurana (Makino) Koehne",11294,"BU","Ryukyu"
   "Mimulus nepalensis Benth.",5050,"GN","Ryukyu"
   "Satakentia liukiuensis (Hatus.) H.E.Moore",24213,"BK","Ryukyu"
  +"Freycinetia tawadana Kimura",30311,"BK","Ryukyu"
   "Nypa fruticans Wurmb",24211,"GN","Ryukyu"
  -"Freycinetia tawadana Kimura",30311,"BK","Ryukyu"
  +"Prunella vulgaris L. subsp. asiatica (Nakai) Hara",473,"GN","Kuriles"
  +"Myrica gale L. var. tomentosa C.DC.",9573,"GN","Kuriles"
  +"Taraxacum shikotanense Kitam.",4018,"GD","Kuriles"
  +"Plantago asiatica L.",5144,"GN","Kuriles"
  +"Senecio cannabifolius Less.",4119,"GN","Kuriles"
  +"Lysichiton camtschatcensis (L.) Schott",24629,"GN","Kuriles"
  +"Lathyrus japonicus Willd.",11632,"GN","Kuriles"
  +"Menyanthes trifoliata L.",4683,"GN","Kuriles"
  +"Oenanthe javanica (Blume) DC.",3235,"GN","Kuriles"
  +"Hydrangea paniculata Siebold",11209,"GN","Kuriles"
  +"Agrimonia pilosa Ledeb.",11492,"GN","Kuriles"
  +"Parasenecio hastata (L.) H. Koyama subsp. orientalis Kitam.",126,"GN","Kuriles"
  +"Mertensia maritima (L.) S. F. Gray subsp. asiatica",452,"GN","Kuriles"
  +"Leymus mollis (Trin.) Pilger",29526,"GN","Kuriles"
  +"Rumex japonicus Houtt.",9910,"GN","Kuriles"
  +"Persicaria thunbergii (Siebold et Zucc.) H.Gross var. thunbergii",9976,"GN","Kuriles"
  +"Rosa rugosa Thunb.",11476,"GN","Kuriles"
  +"Artemisia stelleriana Besser",4218,"GN","Kuriles"
   "Vaccinium vitis-idaea L.",4505,"GN","Kuriles"
  -"Persicaria thunbergii (Siebold et Zucc.) H.Gross var. thunbergii",9976,"GN","Kuriles"
  -"Menyanthes trifoliata L.",4683,"GN","Kuriles"
  -"Lathyrus japonicus Willd.",11632,"GN","Kuriles"
  -"Senecio cannabifolius Less.",4119,"GN","Kuriles"
  -"Mertensia maritima (L.) S. F. Gray subsp. asiatica",452,"GN","Kuriles"
  -"Oenanthe javanica (Blume) DC.",3235,"GN","Kuriles"
  -"Rosa rugosa Thunb.",11476,"GN","Kuriles"
  -"Taraxacum shikotanense Kitam.",4018,"GD","Kuriles"
  -"Prunella vulgaris L. subsp. asiatica (Nakai) Hara",473,"GN","Kuriles"
  -"Leymus mollis (Trin.) Pilger",29526,"GN","Kuriles"
  -"Myrica gale L. var. tomentosa C.DC.",9573,"GN","Kuriles"
  -"Agrimonia pilosa Ledeb.",11492,"GN","Kuriles"
  -"Lysichiton camtschatcensis (L.) Schott",24629,"GN","Kuriles"
  -"Hydrangea paniculata Siebold",11209,"GN","Kuriles"
  -"Artemisia stelleriana Besser",4218,"GN","Kuriles"
  -"Plantago asiatica L.",5144,"GN","Kuriles"
   "Anaphalis margaritacea (L.) Benth. et Hook. f.",4280,"GN","Kuriles"
  -"Parasenecio hastata (L.) H. Koyama subsp. orientalis Kitam.",126,"GN","Kuriles"
  -"Rumex japonicus Houtt.",9910,"GN","Kuriles"
   "Rubus vernus Focke",11424,"GD","Hokkaido"
  +"Castanea crenata Siebold et Zucc.",9752,"GN","Hokkaido"
   "Lobelia chinensis Lour.",5208,"GN","Hokkaido"
  -"Castanea crenata Siebold et Zucc.",9752,"GN","Hokkaido"
   "Rhamnus ishidae Miyabe et Kud{o^}",5464,"BK","Hokkaido"
   "Viburnum urceolatum Sieb. et Zucc.",5213,"GN","Hokkaido"
   "Bredia yaeyamensis (Matsum.) H. L. Li",5677,"BK","Hokkaido"
   "Rhododendron lapponicum (L.) Wahlenb. var. parvifolium Adams",285,"GN","Hokkaido"
   "Aesculus turbinata Blume",5402,"GN","Hokkaido"
   "Rodgersia podophylla A. Gray",11066,"GN","Hokkaido"
  +"Rubus microphyllus L.f.",11420,"GN","Hokkaido"
   "Quercus serrata Murray",9727,"GN","Hokkaido"
  -"Rubus microphyllus L.f.",11420,"GN","Hokkaido"
   "Akebia trifoliata (Thunb.) Koidz.",10580,"GN","Hokkaido"
   "Elliottia paniculata (Sieb. et Zucc.) Benth. et Hook. f.",4411,"GN","Hokkaido"
   "Paraixeris denticulata (Houtt.) Nakai",4052,"GN","Hokkaido"
  
positive.code: "Loropetalum chinense (R. Br.) Oliv.",10979,"GN","Mie"
  "Viburnum japonicum (Thunb. ex Murray) Spreng.",5216,"GD","Mie"
  "Euscaphis japonica (Thunb.) Kanitz",5455,"GN","Izu"
  "Pourthiaea villosa (Thunb.) Decne. var. viliosa",11300,"GN","Izu"
  "Rubus sieboldii Blume",11407,"BU","Izu"
  "Quercus salicina Blume",9742,"GN","Izu"
  "Saussurea insularis Kitam.",4387,"BK","Nagasaki"
  "Meliosma arnottiana (Wight) Walp. var. hachijoensis Nakai",654,"GD","Nagasaki"
  "Livistona chinensis (Jacq.) R. Br. ex Mart.",24187,"GN","Fukuoka"
  
negative.code: "Hylodesmum podocarpum (DC.) H.Ohashi et R.R.Mill var. oxyphyllum (DC.) H.Ohashi et R.R.Mill",11743,"GN","Hokkaido"
  "Staphylea bumalda DC.",5456,"GN","Hokkaido"
  "Salicornia europaea L.",10195,"GN","Hokkaido"
  "Gaultheria miqueliana Takeda",4495,"GN","Hokkaido"
  "Patrinia scabiosifolia Fisch. ex Trevir.",5256,"GN","Hokkaido"
  "Sorbus matsumurana (Makino) Koehne",11294,"BU","Hokkaido"
  "Fraxinus sieboldiana Bl.",4625,"GN","Hokkaido"
  "Taraxacum shikotanense Kitam.",4018,"GD","Hokkaido"
  "Geum calthifolium Sm. var. nipponicum (F.Bolle) Ohwi",11572,"GN","Hokkaido"
  "Penstemon frutescens Lamb.",5033,"GN","Hokkaido"
  "Fauria crista-galli (Menz.) Makino subsp. japonica Fr.",395,"BU","Hokkaido"
  "Phyllodoce aleutica (Spreng.) A. Heller",4415,"GN","Hokkaido"
  "Lotus corniculatus L. subsp. japonicus (Regel) H. Ohashi",11679,"GN","Hokkaido"
  "Ostrya japonica Sarg.",9710,"GN","Hokkaido"
  "Euonymus fortunei (Turcz.) Hand.-Mazz. var. radicans Sieb. ex Miq.",662,"GN","Hokkaido"
  "Bryanthus gmelinii D. Don",4412,"GN","Hokkaido"
  "Potentilla miyabei Makino",11543,"GD","Hokkaido"
  "Harrimanella stelleriana (Pall.) Coville",4492,"GN","Hokkaido"
  "Arcterica nana (Maxim.) Makino",4494,"GN","Hokkaido"
  "Zanthoxylum piperitum (L.) DC.",5338,"GN","Hokkaido"
  "Rosa multiflora Thunb. var. multiflora",11464,"GN","Hokkaido"
  "Panax pseudoginseng Wall. var. japonicus",752,"GN","Hokkaido"
  