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Encycloweedia: Data Sheets
Weeds Sorted by Country of Origin
| RATING | SCIENTIFIC NAME | NATIVE DISTRIBUTION |
| B | Acacia paradoxa | s Australia |
| A | Acaena novae-zelandiae | se Australia, New Zealand, New Guinea |
| A | Acaena pallida | se Australia, New Zealand |
| A | Achnatherum brachychaetum | S. America |
| B | Acroptilon repens | Asia |
| B | Aegilops cylindrica | Mediterranean Europe, w Asia |
| B | Aegilops ovata | Mediterranean Europe, w Asia |
| B | Aegilops triuncialis | Mediterranean Europe, w Asia |
| B | Aeschynomene rudis | tropical America |
| A | Alhagi maurorum | Turainian Desert to Iranian Plateau w through Anatolia to Rhodes & Cyprus |
| B | Allium paniculatum | s Europe, Mediterranean, w & c Asia |
| B | Allium vineale | Europe, n Africa, w Asia |
| A | Alternanthera philoxeroides | S. America |
| B | Ambrosia trifida | c & e US |
| B | Araujia sericifera | s Brazil |
| A | Arctotheca calendula | s Africa |
| Q | Cabomba caroliniana | se N. Am. |
| B | Cardaria chalepensis | c Asia; possibly Middle East |
| B | Cardaria draba | Eurasia |
| B | Cardaria pubescens | Middle East and c Asia, Eurasia |
| A | Carduus acanthoides | Europe; possibly Asia |
| A | Carduus nutans | Eurasia |
| C | Carduus pycnocephalus | s & se Europe |
| C | Carduus tenuiflorus | w Europe |
| B | Carthamus baeticus | Mediterranean |
| B | Carthamus lanatus | Mediterranean |
| A | Carthamus leucocaulos | Mediterranean |
| C | Cenchrus echinatus | s US, Mexico, C. & S. America |
| C | Cenchrus incertus | s US, Mexico, C. & S. America |
| C | Cenchrus longispinus | c & e US |
| B | Centaurea calcitrapa | s Sweden to n Africa |
| A | Centaurea diffusa | Mediterranean, se Europe |
| A | Centaurea iberica | se Europe, Balkans to sw & c Asia |
| A | Centaurea maculosa | e Europe, w Siberia |
| C | Centaurea solstitialis | s Europe, Mediterranean |
| A | Centaurea squarrosa | Middle East |
| B | Centaurea sulphurea | sw Europe |
| A | Chondrilla juncea | s Europe |
| B | Chorispora tenella | sw Asia |
| B | Cirsium arvense | Eurasia, n Africa |
| Q | Cirsium japonicum | temperate E. Asia |
| A | Cirsium ochrocentrum | c US |
| A | Cirsium undulatum | c US |
| C | Convolvulus arvensis | Europe, Eurasia |
| B | Coronopus squamatus | Europe |
| A | Crupina vulgaris | s Europe |
| A | Cucumis melo var. dudaim | tropical Africa, Asia |
| B | Cucumis myriocarpus | s Africa |
| A | Cuscuta reflexa | s Asia |
| C | Cuscuta spp. except C. reflexa | various; some native to CA |
| B | Cynara cardunculus | sw Mediterranean, Morocco |
| C | Cynodon spp. & hybrids | tropical, warm temperate Eurasia, Africa |
| B | Cyperus esculentus | s Europe to India |
| B | Cyperus rotundus | Eurasia |
| C | Cytisus scoparius | s Europe, n Africa |
| B | Elytrigia repens | Eurasia |
| A | Euphorbia esula | Europe, Eurasia |
| B | Euphorbia oblongata | s Europe |
| A | Euphorbia serrata | w Mediterranean, France |
| Q | Euphorbia terracina | s Mediterranean |
| B | Gaura coccinea | CA (Desert Mtns), w Canada, c US, Mexico |
| B | Gaura drummondii | c TX, c Mexico |
| B | Gaura sinuata | OK, TX |
| C | Genista monspessulana | Mediterranean, the Azores, s Europe (Portugal to Asia Minor) |
| B | Gypsophila paniculata | e & c Europe, adjacent Asia |
| A | Halimodendron halodendron | sw Asia |
| A | Halogeton glomeratus | Eurasia |
| A | Helianthus ciliaris | sc US, n Mexico |
| A | Heteropogon contortus | CA (Sonoran Desert) |
| A | Hydrilla verticillata | Eurasia |
| C | Hyoscyamus niger | Mediterranean, Europe |
| C | Hypericum perforatum | Europe to c China, n Africa, w Himalaya |
| B | Imperata brevifolia | CA (SnJV, Sco, SnGb, SnBr, DMoj) |
| C | Iris douglasiana | CA (NW, CW, n SW), OR |
| C | Iris missouriensis | CA (NCoR, SN, SCoRI, TR, PR, GB); w N.America, n Mexico |
| B | Isatis tinctoria | Eurasia, primarily Turkey & Iran |
| C | Iva axillaris | CA to B.C., MT, c US, TX |
| B | Lepidium latifolium | Eurasia |
| Q | Limnobium laevigatum | S. & C. America |
| Q | Limnophila indica | India |
| A | Linaria genistifolia subsp. dalmatica | Mediterranean |
| B | Lythrum salicaria | Europe |
| C | Malvella leprosa | CA (esp. GV), to WA, ID, TX, Mexico, S. America |
| B | Muhlenbergia schreberi | e US, TX, e Mexico, S. America |
| B | Nothoscordum inodorum | S. America |
| B | Nymphaea mexicana | se US, FL, TX, Mexico |
| Q | Ononis alopecuroides | Europe, n Africa, Middle East |
| A | Onopordum acanthium | w Europe to c Asia |
| A | Onopordum illyricum | se Europe |
| A | Onopordum tauricum | Mediterranean |
| A | Orobanche cooperi | CA (Desert), to UT, AZ, Baja CA |
| A | Orobanche ramosa | s Europe |
| B | Oryza rufipogon | se Asia |
| B | Panicum antidotale | India |
| A | Peganum harmala | se Europe to warm Asia |
| C | Pennisetum clandestinum | tropical Africa, sw Asia, Arabia |
| A | Physalis longifolia | e N. America |
| B | Physalis viscosa | c US, e Mexico |
| Q | Pistia stratiotes | ec Africa |
| C | Polygonum amphibium var. emersum | CA-FP, w DMoj; to e N. America, Eurasia |
| B | Polygonum cuspidatum | Japan |
| B | Polygonum polystachyum | s & c Asia |
| B | Polygonum sachalinense | Japan |
| A | Prosopis strombulifera | Argentina |
| B | Rorippa austriaca | Austria, Europe |
| Q | Rorippa sylvestris | Europe |
| C | Salsola tragus | Eurasia |
| Q | Salsola collina | Siberia |
| C | Salsola paulsenii | se Europe, c Asia |
| A | Salsola vermiculata | Eurasia |
| B | Salvia aethiopis | c & s Europe, w Asia |
| A | Salvia virgata | e Mediterranean to c Asia |
| Q | Salvinia auriculata complex | Mexico to n Argentina & Bolivia, Cuba Hispaniola, Jamaica |
| A | Scolymus hispanicus | s Europe to nw France |
| B | Senecio jacobaea | Eurasia |
| B | Senecio squalidus | Europe |
| B | Setaria faberi | e Asia |
| A | Solanum cardiophyllum | Mexico |
| B | Solanum carolinense | c & e US, n Mexico |
| A | Solanum dimidiatum | S. America (Brazil) |
| B | Solanum elaeagnifolium | c & sw US, S. America, n Mexico |
| B | Solanum lanceolatum | Mexico, C. America |
| B | Solanum marginatum | Africa (Ethiopia) |
| A | Sonchus arvensis | Eurasia |
| C | Sorghum halepense | Mediterranean |
| A | Sphaerophysa salsula | n & c Asia |
| A | Striga asiatica | ow tropics |
| B | Symphytum asperum | Europe, sw Asia, Caucasus, Iran |
| C | Taeniatherum caput-medusae | s Europe |
| A | Tagetes minuta | c & w S. America |
| C | Tribulus terrestris | Mediterranean |
| B | Ulex europaeus | w Europe |
| B | Viscum album | Eurasia |
| A | Zygophyllum fabago | Mediterranean, c Asia |