anchor.diff:  "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"
  -"Sorbus matsumurana (Makino) Koehne",11294,"BU","Hokkaido"
  -"Gaultheria miqueliana Takeda",4495,"GN","Hokkaido"
   "Taraxacum shikotanense Kitam.",4018,"GD","Hokkaido"
  -"Patrinia scabiosifolia Fisch. ex Trevir.",5256,"GN","Hokkaido"
  -"Phyllodoce aleutica (Spreng.) A. Heller",4415,"GN","Hokkaido"
  -"Fauria crista-galli (Menz.) Makino subsp. japonica Fr.",395,"BU","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"
  -"Arcterica nana (Maxim.) Makino",4494,"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"
  
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: "Ilex leucoclada (Maxim.) Makino",5418,"BU","Hokkaido"
  "Parasenecio delphiniifolia (Sieb. et Zucc.) H. Koyama",4138,"GN","Hokkaido"
  "Dendranthema arcticum (L.) Tzvelev subsp. maekawanum Kitam.",177,"BU","Hokkaido"
  "Vitis flexuosa Thunb.",3192,"GN","Hokkaido"
  "Leontopodium hayachinense (Takeda) Hara et Kitam. var. miyabeanum",194,"BK","Hokkaido"
  "Houttuynia cordata Thunb.",10614,"GN","Hokkaido"
  "Stephanandra incisa (Thunb.) Siebold et Zucc. ex Zabel var. incisa",11254,"GN","Hokkaido"
  "Vitis ficifolia Bunge var. lobata Regel",675,"GN","Hokkaido"
  "Imperata cylindrica (L.) Raeusch.",29511,"GN","Hokkaido"
  "Pourthiaea villosa (Thunb.) Decne. var. villosa",11300,"GN","Hokkaido"
  "Ardisia japonica (Thunb.) Bl.",4535,"GN","Hokkaido"
  "Hedera rhombea (Miq.) Bean",5740,"GN","Hokkaido"
  "Eleutherococcus innovans (Sieb. et Zucc.) H. Ohba",5745,"GN","Hokkaido"
  "Lysimachia mauritiana Lam.",4550,"GN","Hokkaido"
  "Gnaphalium japonicum Thunb.",4271,"GN","Hokkaido"
  "Padus grayana (Maxim.) C.K.Schneid.",11327,"GN","Hokkaido"
  "Ilex macropoda Miq.",5429,"GN","Hokkaido"
  "Hovenia dulcis Thunb.",5472,"GN","Hokkaido"
  