National Institute for Environmental Studies, Japan NIES Invasive Species of Japan Japanese | English
  1. Invasive Species of Japan Home >
  2. Plants
Plants Go to Alert List

Mammals | Birds | Reptiles | Amphibians | Fishes | Insects | Invertebrates (except insects) | Plants
[Photo]: With picture
Higher Taxa Scientific Name
[Common name]
Legal control Distribution in Japan
Azollaceae, Hydropteridales, Filicopsida, Pteridophyta Azolla cristata   [Photo]
  [Water fern]
Yes Miyagi, Ibaraki, Gumma, Saitama, Tokyo, Aichi, Gifu, Ahiga, Kyoto, Osaka, Wakayama, H ...
Salviniaceae, Hydropteridales, Filicopsida, Pteridophyta Salvinia molesta   [Photo]
  [Giant salvinia]
This species infested in Hyogo and Okinawa Prefs. in past.
Iridaceae, Asparagales, Liliopsida, Magnoliophyta Iris pseudacorus   [Photo]
  [Water flag]
Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Andropogon virginicus
  [Broomsadge bluestem]
Kanto District and western Japan.
Poaceae, Poales, Liliopsida, Magnoliophyta Anthoxanthum odoratum   [Photo]
  [Sweet vernalgrass]
Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Avena fatua   [Photo]
  [Wild oats]
Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Briza maxima   [Photo]
  [Big quaking grass]
Kanto District to western Japan. There are records on occurrence in Akita Pref.
Poaceae, Poales, Liliopsida, Magnoliophyta Bromus catharticus   [Photo]
  [Rescuegrass]
Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Dactylis glomerata   [Photo]
  [Orchardgrass]
Hokkaido, Honshu, Shikoku, and Kyushu.
Poaceae, Poales, Liliopsida, Magnoliophyta Elytrigia repens   [Photo]
  [Quackgrass]
Yes Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Eragrostis curvula   [Photo]
  [Weeping Lovegrass]
Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Festuca arundinacea
  [Tall fescue]
Hookaido, Honshu, Shikoku, Kyushu
Poaceae, Poales, Liliopsida, Magnoliophyta Holcus lanatus
  [Common velvetgrass]
Almost entire Japan. In western Japan, relatively abundant in upland.
Poaceae, Poales, Liliopsida, Magnoliophyta Hordeum murinum   [Photo]
  [Wall barley grass]
Yes Almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Lolium multiflorum   [Photo]
  [Italian Ryegrass]
Poaceae, Poales, Liliopsida, Magnoliophyta Paspalum distichum   [Photo]
  [Knotgrass]
Yes Kanto and Hokuriku District to western Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Phleum pratense   [Photo]
  [Timothy]
Almost entire Japan. Relatively abundant in northern and upland area.
Poaceae, Poales, Liliopsida, Magnoliophyta Phyllostachys edulis Yes Almost entire Japan. Northern most distribution is Hakodate, southern Hokkaido.
Poaceae, Poales, Liliopsida, Magnoliophyta Poa pratensis   [Photo]
  [Kentucky bluegrass]
Lowland in almost entire Japan
Poaceae, Poales, Liliopsida, Magnoliophyta Sorghum halepense   [Photo]
  [Johnsongrass]
Honshu, Shikoku, and Kyushu Islands.
Poaceae, Poales, Liliopsida, Magnoliophyta Spartina alterniflora
  [Saltmarsh cordgrass]
Aichi (Toyohashi and Handa Cities) and Kumamoto (Kumaoto and Uki Cities) Prefs.
Araceae, Alismatales, Liliopsida, Magnoliophyta Wolffia globosa
  [Rootless duckweed]
Kanto and Hokuriku District to western Japan
Cyperaceae, Poales, Liliopsida, Magnoliophyta Cyperus congestus   [Photo]
  [Dense flat sedge]
Tokyo, Chiba, and Saitama Prefs.
Cyperaceae, Poales, Liliopsida, Magnoliophyta Cyperus eragrostis
  [Tall flatsedge]
Kanto District and western region in main land of Japan, Okinawa, and Ogasawara (Boni ...
Cyperaceae, Poales, Liliopsida, Magnoliophyta Cyperus esculentus   [Photo]
  [Yellow nutsedge]
Honshu (except northern part), Shikoku, and Kyushu Islands.
Araceae, Alismatales, Liliopsida, Magnoliophyta Pistia stratiotes   [Photo]
  [Water lettuce]
Yes Kanto and Hokuriku District to western Japan. Ogasawara (Bonin) Islands.
Commelinaceae, Commelinales, Liliopsida, Magnoliophyta Tradescantia flumiensis
  [Wandering jew]
Tokyo, Saitama, Kanagawa, Shizuoka, Aichi, Mie, Toyama, kyoto, Osaka, Wakayama, Hyogo ...
Hydrocharitaceae, Alismatales, Liliopsida, Magnoliophyta Egeria densa   [Photo]
  [Brazilian elodea]
Honshu, Shikoku, and Kyushu of the Japanese main islands. Hachijojima Island (Izu Isl ...
Hydrocharitaceae, Alismatales, Liliopsida, Magnoliophyta Elodea nuttallii   [Photo]
  [Florida elodea]
Kanto District to western Japan.
Pontederiaceae, Commelinales, Liliopsida, Magnoliophyta Eichhornia crassipes   [Photo]
  [Water hyacinth]
Central to Southern Japan. Hachijojima Is. (Izu Islands). Especially abundant in Kyus ...
Arecaceae, Arecales, Liliopsida, Magnoliophyta Trachycarpus fortunei   [Photo] Kanto District to western Japan. Native to southern Kyushu.
Liliaceae, Liliales, Liliopsida, Magnoliophyta Lilium formosanum   [Photo]
  [Formosa lily]
Miyagi, Fukushima, Kanto District to western Japan, Ryukyus.
Alliaceae, Asparagales, Liliopsida, Magnoliophyta Nothoscordum gracile   [Photo]
  [Wild onion]
Ibaraki, Tokyo, Kanagawa, Shizuoka, Mie, Wakayama, Kyoto, Osaka, Hyogo, Kagawa, and T ...
Verbenaceae, Lamiales, Magnoliopsida, Magnoliophyta Verbena brasiliensis   [Photo]
  [Brazil vervain]
Southern Tohoku and Kanto District to western Japan
Rubiaceae, Rubiales, Magnoliopsida, Magnoliophyta Diodia teres   [Photo]
  [Poorjoe]
Central Honshu to western Japan
Plantaginaceae, Plantaginales, Magnoliopsida, Magnoliophyta Plantago lanceolata   [Photo]
  [Buckhorn plantain]
Almost entire Japan
Valerianaceae, Dipsacales, Magnoliopsida, Magnoliophyta Valerianella locusta   [Photo]
  [Lewiston cornsalad]
Entire Japanese main islands
Campanulaceae, Campanulales, Magnoliopsida, Magnoliophyta Triodanis perfoliata   [Photo]
  [Common nenus’ Looking-glass]
Middle to western Japan (Fukushima Pref. and southern part)
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Ageratina altissima
  [White Snakeroot]
The first record of establishment (1916) was in Hakone, Kanagawa Pref. Current distri ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Ambrosia artemisiifolia   [Photo]
  [Bitterweed]
Yes Almost entire Japan including Okinawa.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Ambrosia trifida   [Photo]
  [Giant Ragweed]
Yes Almost entire Japan including Okinawa.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Anthemis cotula
  [Mayweed]
Almost Entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Artemisia sieversiana
  [Sievers wormwood]
Saitama, Kanagawa, Nagano, and Osaka, Kyoto Prefs.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Aster subulatus   [Photo]
  [Annual salt-marshaster]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Bidens frondosa   [Photo]
  [Beggar’s Tick]
Almost entire Japan including Amami and Okinawa Islands.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Bidens pilosa var. minor   [Photo] Central to western Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Bidens pilosa var. pilosa   [Photo]
  [Hairy beggar-ticks]
Middle Honshu and western regions.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Bidens pilosa var. radiata
  [Romerillo]
Southern Kyushu Is., Okinawa, Sakishima, and Ogasawara (Bonin) Islands.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Chrysanthemum seticuspe   [Photo] Introduced to Honshu, Shikoku, and Tsushima Is. from China and South Korea.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Cirsium arvense
  [Cananda thirstle]
Hokkaido, Tohoku, Kanto, Koshinetsu, Tokai, and Hokuriu Districts.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Cirsium vulgare   [Photo]
  [Bull thisytle]
Yes Hokkaido, Honshu, and Shikoku Is. Especially spread in Hokkaido, including several sm ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Conyza canadensis   [Photo]
  [Canadian fleabane]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Conyza sumatrensis   [Photo]
  [Sumatran Fleabane]
Honshu, Shikoku, and Kyushu Is.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Coreopsis lanceolata   [Photo]
  [Lance-leaved tickseed]
Yes Almost entire Japan including Okinawa.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Cosmos bipinnatus   [Photo]
  [Common cosmos]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Crassocephalum crepidioides   [Photo]
  [redflower ragleaf]
Wide area of Honshu, Shikoku, and Kyushu, and Okinawajima and Ogasawara (Bonin) Islan ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Erigeron annuus   [Photo]
  [Annual fleabane]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Erigeron karvinskianus   [Photo]
  [Mexican fleabane]
Kanto District to western Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Erigeron philadelphicus   [Photo]
  [Philadelphia fleabane]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Gaillardia pulchella
  [Rose-ring gaillardia]
Unknown Hokkaido, Tokyo, and Kinki District to southwestern Japan.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Galinsoga quadriradiata   [Photo]
  [Hairy galinsoga,Shaggy soldier]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Gamochaeta coarctata   [Photo]
  [Spiked cudweed]
Kanto District to wester Japan.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Gamochaeta pensylvanica   [Photo]
  [Wandering cudweed]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Gymnocoronis spilanthoides   [Photo]
  [Senegal tea plant]
Yes Tohigi, Gumma, Chiba, Saitama, Tokyo, Aichi, Shiga, Wakayama, Osaka, Hyogo, Kochi, Fu ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Helianthus tuberosus   [Photo]
  [Jerusalem artichoke]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Hypochaeris radicata   [Photo]
  [Catsear]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Rudbeckia laciniata   [Photo]
  [Golde Glow]
Yes Almost entire Japan. All the Prefectures of Honshu Island except Nara and Osaka; Hokk ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Senecio madagascariensis   [Photo]
  [Fireweed]
Yes Fukushima, Chiba, Shizuoka, Shiga, Mie, Nara, Osaka, Wakayama, Hyogo, Okayama, Kagawa ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Senecio vulgaris   [Photo]
  [Common groundsel]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Solidago altissima   [Photo]
  [Tall Golden rod]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Solidago gigantea subsp. serotina   [Photo]
  [Late goldenrod]
Almost entire Japan. More dominant than S. altissima in Hokkaido.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Sonchus asper   [Photo]
  [Spiny sowthistle]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Sphagneticola trilobata   [Photo]
  [Creeping daisy]
Okinawa Islands
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Taraxacum officinale   [Photo]
  [Common dandelion,Lion's tooth]
Almost entire Japan
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Tripleurospermum maritimum subsp. inodorum   [Photo]
  [Scentless chamomile]
Hokkaido, Aomori, Akita, Kanagawa, Shizuoka, Mie, Hyogo, Okayama, Tokushima, Saga, an ...
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Verbesina alternifolia   [Photo]
  [Wingstem]
Hokkaido, Nagano Pref., etc.
Asteraceae, Asterales, Magnoliopsida, Magnoliophyta Xanthium occidentale   [Photo]
  [Oriental cocklebur]
Almost entire Japan
Verbenaceae, Lamiales, Magnoliopsida, Magnoliophyta Lantana camara   [Photo]
  [Common lantana]
Ogasawara (Bonin) Islands (Chichijima, Hahajima, Anijima, and Ototojima Is.), Okinawa
Verbenaceae, Lamiales, Magnoliopsida, Magnoliophyta Verbena bonariensis   [Photo]
  [Tall vervain]
Almost entire Japan
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Cymbalaria muralis
  [Ivy-leaved toadflax]
Hokkaido, Honshu and Shikoku Is.
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Lindernia dubia   [Photo]
  [Falsepinpernel]
Almost entire Japan
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Nuttallanthus canadensis   [Photo]
  [Oldfield toadflax]
Kanto, Hokuriku, to central and western Japan.
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Verbascum blattaria   [Photo]
  [moth mullein]
Yes Hokkaido to Tohoku District, Shizuoka, Mie, and Hyogo Prefs.
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Verbascum thapsus   [Photo]
  [Common mullein]
Yes Almost entire Japan. Especially abundant in Tohoku and Hokkaido District.
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Veronica anagallis-aquatica   [Photo]
  [Water speedwell]
Yes Almost entire Japan. All the Prefectures of Honshu Is. except Akita, Yamagata, Yamana ...
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Veronica arvensis   [Photo]
  [Corn speedwell]
Almost entire Japan
Scrophulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Veronica persica   [Photo]
  [Commonfield speedwell]
Almost entire Japan
Lamiaceae, Lamiales, Magnoliopsida, Magnoliophyta Lamium purpureum   [Photo]
  [Red deadnettle]
Almost entire Japan
Lentibulariaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Utricularia inflata   [Photo]
  [Swollen bladderwort]
Shizuoka, Aichi, Hyogo, and Osaka Prefs.
Solanaceae, Solanales, Magnoliopsida, Magnoliophyta Datura stramonium   [Photo]
  [Jimsonweed]
Almost entire Japan
Solanaceae, Solanales, Magnoliopsida, Magnoliophyta Physalis angulata   [Photo]
  [Wild capegooseberry]
Yes Almost entire Japan.
Solanaceae, Solanales, Magnoliopsida, Magnoliophyta Salpichroa origanifolia   [Photo] Yes Central to Western Honshu Island. The photo was taken in Ise, Mie Pref.
Solanaceae, Solanales, Magnoliopsida, Magnoliophyta Solanum carolinense   [Photo]
  [Carolina horse nettle]
Yes Almost entire Japan including Okinawa
Orobanchaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Orobanche minor   [Photo]
  [Common broomrape ; Clover broomrape]
Honshu and Shikoku Is.
Convolvulaceae, Solanales, Magnoliopsida, Magnoliophyta Convolvulus arvensis   [Photo]
  [Field bindweed,Small bindweed]
Almost entire Japan
Cuscutaceae, Solanales, Magnoliopsida, Magnoliophyta Cuscuta campestris   [Photo]
  [Field dodder]
Almost entire Japan
Convolvulaceae, Solanales, Magnoliopsida, Magnoliophyta Ipomoea coccinea   [Photo]
  [Red morningglory]
Yes Middle to southern Japan
Convolvulaceae, Solanales, Magnoliopsida, Magnoliophyta Ipomoea hederacea   [Photo]
  [Ivyleaf morning glory]
Yes Hokkaido, many parts of Honshu, Shikoku, Kyushu, and Okinawa.
Boraginaceae, Lamiales, Magnoliopsida, Magnoliophyta Myosotis scorpioides   [Photo]
  [True forget-me-not]
Hokkaido, Tohoku, Kanto, Koshinetsu, Hokuriku, and Shikoku Districts, Shizuoka, and G ...
Oleaceae, Scrophulariales, Magnoliopsida, Magnoliophyta Ligustrum lucidum   [Photo]
  [Glossy Privet]
Yes Miyagi, Fukushima Prefs., and Kanto District to western Japan.
Malvaceae, Malvales, Magnoliopsida, Magnoliophyta Abutilon theophrasti   [Photo]
  [Chinese jute]
Almost entire Japan.
Malvaceae, Malvales, Magnoliopsida, Magnoliophyta Hibiscus cannabinus   [Photo]
  [Kenaf]
Not established in Japan. However, widely cultivated.
Chenopodiaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Chenopodium pumilio   [Photo]
  [Tasmanian goosefoot]
Yes Almost entire Japan
Onagraceae, Myrtales, Magnoliopsida, Magnoliophyta Oenothera biennis   [Photo]
  [Common eveningprimrose]
Almost entire Japan
Onagraceae, Myrtales, Magnoliopsida, Magnoliophyta Oenothera laciniata   [Photo]
  [Cutleaf eveveningprimerose]
Honshu, Shikoku, and Kyushu
Onagraceae, Myrtales, Magnoliopsida, Magnoliophyta Oenothera rosea   [Photo]
  [Pink eveningprimerose]
Central to western Japan
Brassicaceae, Capparales, Magnoliopsida, Magnoliophyta Barbarea vulgaris   [Photo]
  [Common yellow rocket]
Most of entire Japan
Brassicaceae, Capparales, Magnoliopsida, Magnoliophyta Coronopus didymus   [Photo]
  [Swinecress]
Wide area with warm climate.
Brassicaceae, Capparales, Magnoliopsida, Magnoliophyta Nasturtium officinale   [Photo]
  [Watercress]
Most of entire Japan
Brassicaceae, Capparales, Magnoliopsida, Magnoliophyta Orychophragmus violaceus   [Photo]
  [Violet orychophragmus]
Almost entire Japan
Haloragaceae, Haloragales, Magnoliopsida, Magnoliophyta Myriophyllum aquaticum   [Photo]
  [Parrot’s Feather]
Yes Almost entire Japan (no record in Aomori, Iwate, Akita, Fukushima, Niigata, and Ishik ...
Cucurbitaceae, Violales, Magnoliopsida, Magnoliophyta Sicyos angulatus   [Photo]
  [Burcucumber]
Yes Almost entire Japan
Nyctaginaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Mirabilis jalapa   [Photo]
  [Common four-o'clock]
Most of entire Japan
Oxalidaceae, Geraniales, Magnoliopsida, Magnoliophyta Oxalis corymbosa   [Photo]
  [Violet woodsorrel]
Kanto District and western part of Japan
Oxalidaceae, Geraniales, Magnoliopsida, Magnoliophyta Oxalis pes-caprae   [Photo]
  [Buttercup oxalis]
Central to southern Honshu, Kyushu, and Shikoku Is.
Moraceae, Urticales, Magnoliopsida, Magnoliophyta Morus australis   [Photo]
  [Aino mulberry]
Yes Ogasawara (Bonin) Islands. (Chichijima and Hahajima Is.)
Papaveraceae, Papaverales, Magnoliopsida, Magnoliophyta Papaver dubium   [Photo]
  [Field poppy]
Most of entire Japan
Tiliaceae, Malvales, Magnoliopsida, Magnoliophyta Corchorus olitorius
  [Nalta jute]
Almost entire Japan
Cabombaceae, Nymphaeales, Magnoliopsida, Magnoliophyta Cabomba caroliniana   [Photo]
  [Fanwort]
Honshu, Shikoku, Kyushu Islands.
Apiaceae, Apiales, Magnoliopsida, Magnoliophyta Conium maculatum   [Photo]
  [Poison hemlock]
Hokkaido and some parts of Honshu.
Apiaceae, Apiales, Magnoliopsida, Magnoliophyta Hydrocotyle ranunculoides   [Photo]
  [Floating marshpennywort]
Yes Okayama, Oita, Fukuoka, and Kumamoto Prefs.
Polygonaceae, Polygonales, Magnoliopsida, Magnoliophyta Rumex obtusifolius   [Photo]
  [Broadleaf dock]
Most of entire Japan
Phyllanthaceae, Malpighiales, Magnoliopsida, Magnoliophyta Bischofia javanica   [Photo]
  [Java Ceder]
Yes Ogasawara (Bonin) Islands.
Euphorbiaceae, Malpighiales, Magnoliopsida, Magnoliophyta Chamaesyce maculata   [Photo]
  [Milk purslane]
Almost entire Japan
Caryophyllaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Cerastium glomeratum   [Photo]
  [Sticky chickweed,Mouse-ear chickweed]
Hokkaido, Honshu, and Shikoku Islands.
Caryophyllaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Petrorhagia nanteulii   [Photo]
  [Childing pink]
Akita, Miyagi, Yamagata, Chiba, Kanagawa, Shizuoka, Aichi, Mie, Shiga, Osaka, Hyogo, ...
Simaroubaceae, Sapindales, Magnoliopsida, Magnoliophyta Ailanthus altissima   [Photo]
  [Tree of heaven]
Hokkaido, Gumma, Siatama, Kanagawa, Shizuoka, Aichi, Okayama, and Hiroshima Prefs.
Amaranthaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Alternanthera denticulata   [Photo]
  [Joyweed]
Pacific coastal side of central to southern Japan.
Amaranthaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Alternanthera philoxeroides
  [Alligatorweed]
Yes Chiba, Kanagawa, Shizuoka, Shiga, Kyoto, Osaka, Hyogo, Fukuoka, Saga, Kumamoto, Kagos ...
Amaranthaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Amaranthus retroflexus   [Photo]
  [Redroot pigweed]
Almost entire Japan
Amaranthaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Amaranthus spinosus
  [Spiny amaranth]
C to W Honshu, Shikoku, Kyushu, Ryukyus, and Ogasawara (Bonin) Islands.
Amaranthaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Celosia argentea   [Photo]
  [Silver cock's comb]
Warm area (W Honshu, Kyushu, Shikoku, Okinawa)
Amaranthaceae, Caryophyllales, Magnoliophyta Froelichia gracilis
  [Slender snakecotton]
Osaka and Hyogo Pref.
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Amorpha fruticosa   [Photo]
  [Indigobush]
Most of entire Japan
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Astragalus sinicus   [Photo]
  [Chinese vetch,Milk vetch]
Almost entire Japan
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Leucaena leucocephala   [Photo]
  [White Popinac]
Ogasawara (Bonin) and southern Ryukyus.
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Lotus corniculatus var. corniculatus   [Photo]
  [Birdsfoot trefoil]
Almost entire Japan
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Medicago lupulina   [Photo]
  [Black medic]
Almost entire Japan
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Robinia pseudoacacia   [Photo]
  [False Acacia]
Yes Entire Japan
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Trifolium repens   [Photo]
  [White clover]
Almost entire Japan
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Ulex europaeus
  [Common gorse]
Kanagawa, Wakayama, and Shimane Prefs., and Shikoku.
Lythraceae, Myrtales, Magnoliopsida, Magnoliophyta Ammannia coccinea
  [Purple ammannia]
Middle to southwestern part of Japan mainland.
Casuarinaceae, Casuarinales, Magnoliopsida, Magnoliophyta Casuarina equisetifolia
  [Beefwood]
Yes Ryukyus and Ogasawara (Bonin) Islands.
Phytolaccaceae, Caryophyllales, Magnoliopsida, Magnoliophyta Phytolacca americana   [Photo]
  [Common pokeweed]
Most of entire Japan
Pinaceae, Pinales, Pinopsida, Pinophyta Pinus luchuensis   [Photo]
  [Luchu pine]
Ogasawara (Bonin) Islands.
Fabaceae, Fabales, Magnoliopsida, Magnoliophyta Desmodium paniculatum
  [Tick Trefoil]
Yes Relatively abundant in Kanto to western Japan.
Higher Taxa Common name [Scientific Name] Legal control Distribution in Japan

Mammals | Birds | Reptiles | Amphibians | Fishes | Insects | Invertebrates (except insects) | Plants