anchor.diff:  "Magnolia kobus DC.",10251,"GN","Aichi"
   "Lindera praecox (Siebold et Zucc.) Blume",10282,"BU","Aichi"
   "Tsuga sieboldii Carri{e`}re",3972,"GN","Aichi"
  +"Euptelea polyandra Sicbold et Zucc",10312,"BU","Aichi"
   "Schisandra repanda (Siebold et Zucc.) Radlk.",10257,"GN","Aichi"
  -"Euptelea polyandra Sicbold et Zucc",10312,"BU","Aichi"
   "Hovenia dulcis Thunb.",5472,"GN","Aichi"
  +"Conocephalum supradecompositum",30378,"?","Aichi"
   "Fagus crenata Blume",9718,"BU","Aichi"
  -"Conocephalum supradecompositum",30378,"?","Aichi"
   "Osmanthus heterophyllus (G. Don) P. S. Green",4634,"BU","Nagano"
   "Diplazium subsinuatum (N. Wall. ex Hook. et Grev.) Tagawa",3863,"GN","Nagano"
   "Inula ciliaris (Miq.) Maxim.",4262,"BU","Gifu"
  
positive.code: "Zanthoxylum ailanthoides Sieb. et Zucc.",3177,"GN","Aomori"
  "Thuja standishii (Gordon) Carri{e`}re",3991,"BU","Aomori"
  "Shortia uniflora (Maxim.) Maxim.",4407,"GD","Aomori"
  "Rhododendron aureum Georgi",4474,"GN","Aomori"
  "Hylotelephium verticillatum (L.) H. Ohba var. verticillatum",10987,"GN","Aomori"
  "Cassiope lycopodioides (Pall.) D. Don",4493,"GN","Aomori"
  "Gaultheria adenothrix (Miq.) Maxim.",4496,"GN","Aomori"
  "Polytrichum alpinum",30363,"syn","Aomori"
  "Diapensia lapponica L. var. obovata",273,"GN","Aomori"
  "Akebia quinata (Houtt.) Decne.",10579,"GN","Aomori"
  "Lindera praecox (Siebold et Zucc.) Blume",10282,"BU","Aomori"
  "Alnus japonica (Thunb.) Steud.",9676,"GN","Akita"
  "Rhus trichocarpa Miq.",5373,"GN","Akita"
  "Ilex leucoclada (Maxim.) Makino",5418,"BU","Akita"
  "Acer micranthum Sieb. et Zucc.",5384,"BU","Akita"
  "Acer micranthum Sieb. et Zucc.",5384,"BU","Aomori"
  "Lysimachia clethroides Duby",29844,"GN","Akita"
  "Gentiana nipponica Maxim.",4672,"BU","Akita"
  "Gentiana nipponica Maxim.",4672,"BU","Aomori"
  "Castanea crenata Siebold et Zucc.",9752,"GN","Akita"
  "Phellodendron amurense Rupr.",3178,"GN","Akita"
  "Acer tschonoskii Maxim.",3180,"BU","Akita"
  "Magnolia hypoleuca Siebold et Zucc.",10247,"GN!","Akita"
  "Vicia unijuga A.Braun",11620,"GN","Akita"
  "Epigaea asiatica Maxim.",4418,"BU","Akita"
  "Celastrus orbiculatus Thunb.",3188,"GN","Akita"
  "Acer rufinerve Sieb. et Zucc.",5379,"BU","Akita"
  "Acer rufinerve Sieb. et Zucc.",5379,"BU","Aomori"
  "Macleaya cordata (Willd.) R. Br.",10805,"GN","Akita"
  "Stachyurus praecox Sieb. et Zucc.",3210,"GN","Akita"
  "Conocephalum supradecompositum",30378,"?","Akita"
  "Schizophragma hydrangeoides Siebold et Zucc.",11199,"GN","Akita"
  "Gnaphalium japonicum Thunb.",4271,"GN","Akita"
  "Conocephalum conicum",30376,"GN","Akita"
  "Clethra barbinervis Sieb. & Zucc.",29824,"GN","Akita"
  "Aesculus turbinata Blume",5402,"GN","Akita"
  "Actinidia arguta (Siebold et Zucc.) Planch. ex Miq. var. arguta",10709,"GN","Akita"
  "Aster glehni F. Schmidt var. hondoensis",151,"BU/","Akita"
  "Rhytidiadelphus triquetrus",30352,"GN","Akita"
  "Wisteria floribunda (Willd.) DC.",11647,"BU","Akita"
  "Juglans mandshurica Maxim. var. sachalinensis (Miyabe et Kud{o^}) Kitam.",9579,"GN","Akita"
  "Acer ukurunduense Trautv. et C. A. Mey.",5387,"GN","Akita"
  "Zelkova serrata (Thunb.) Makino",9762,"GN","Akita"
  "Loiseleuria procumbens (L.) Desv.",4413,"GN","Akita"
  "Loiseleuria procumbens (L.) Desv.",4413,"GN","Aomori"
  "Aruncus dioicus (Walter) Fernaid var. kamtschaticus (Maxim.) H. Hara",11247,"GN","Akita"
  "Rosa multiflora Thunb. var. multiflora",11464,"GN","Akita"
  "Rubus phoenicolasius Maxim.",11434,"GN","Akita"
  "Betula ermanii Cham. var. ermanii",9692,"GN","Akita"
  "Viburnum furcatum Bl. ex Maxim.",5214,"GN","Akita"
  "Aralia elata (Miq.) Seem.",5738,"GN","Akita"
  "Macrodiplophyllum plicatum",30368,"syn","Akita"
  "Macrodiplophyllum plicatum",30368,"syn","Aomori"
  "Mimulus sessilifolius Maxim.",5051,"GN","Akita"
  "Mimulus sessilifolius Maxim.",5051,"GN","Aomori"
  "Pogonatum grandifolium",30358,"syn","Akita"
  "Pterocarya rhoifolia Siebold et Zucc.",9576,"GN","Akita"
  "Lotus corniculatus L. subsp. japonicus (Regel) H. Ohashi",11679,"GN","Akita"
  "Picrasma quassioides (D. Don) Benn.",5354,"GN","Akita"
  "Empetrum nigrum L. var. japonicum",340,"GN","Akita"
  "Viburnum dilatatum Thunb. ex Murray",5219,"GN","Akita"
  "Zanthoxylum piperitum (L.) DC.",5338,"GN","Akita"
  "Oplopanax japonicus (Nakai) Nakai",5752,"BU","Akita"
  "Morus australis Poir. in Lam.",9799,"GN","Akita"
  "Rhododendron obtusum (Lindl.) Planch. var. kaempferi Planch.",290,"BU","Akita"
  "Disporum smilacinum A. Gray",29829,"GN","Akita"
  "Pinus pumila (Pall.) Regel",3983,"GN","Akita"
  "Fallopia sachalinensis (F. Schmidt) Ronse Decr.",9953,"GN","Akita"
  "Geum pentapetalum (L.) Makino",11570,"GN","Akita"
  
negative.code: "Dryopteris erythrosora (D. C. Eaton) Kuntze",3684,"GN","Miyazaki"
  "Agrimonia pilosa Ledeb.",11492,"GN","Miyazaki"
  "Rosa multiflora Thunb. var. multiflora",11464,"GN","Miyazaki"
  "Smilax sieboldii Miq.",30389,"GN","Miyazaki"
  "Litsea acuminata (Blume) Sa. Kurata",10293,"GN","Miyazaki"
  "Pourthiaea villosa (Thunb.) Decne. var. viliosa",11300,"GN","Miyazaki"
  "Lysimachia clethroides Duby",29844,"GN","Miyazaki"
  "Magnolia hypoleuca Siebold et Zucc.",10247,"GN!","Miyazaki"
  