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Created by Roger Carlson
over 4 years ago
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| Question | Answer |
| Elderberry | Sambucus nigra Family: Adoxaceae |
| Common Lamb's quarters | Chenopodium album Family: Amaranthaceae |
| Nettleleaf goosefoot | Chenopodium murale Family: Amaranthaceae |
| Prostrate pigweed | Amaranthus blitoides Family: Amaranthaceae |
| Russian thistle | Salsola tragus Family: Amaranthaceae |
| Brazilian peppertree | Schinus terebinthifolia Family: Anacardiaceae |
| Peruvian peppertree | Schinus molle Family: Anacardiaceae |
| Laurel sumac | Malosma laurina Family: Anacardiaceae |
| Annual sowthistle | Sonchus oleraceus Family: Asteraceae |
| Big sagebrush | Artemisia tridentata Family: Asteraceae |
| Blessed thistle | Cnicus benedictus Family: Asteraceae |
| Bristly oxtongue | Picris echioides Family: Asteraceae |
| California cudweed | Pseudognaphalium californicum Family: Asteraceae |
| Common groundsel | Senecio vulgaris Family: Asteraceae |
| Foetida hawk's-beard | Crepis foetida Family: Asteraceae |
| Hairy Fleabane | Conyza bonariensis Family: Asteraceae |
| Maltese star thistle | Centaurea melitensis Family: Asteraceae |
| Prickly lettuce | Lactuca serriola Family: Asteraceae |
| Telegraph weed | Heterotheca grandiflora Family: Asteraceae |
| Sacred bamboo | Nandina domestica Family: Berberidaceae |
| Phacelia | Phacelia spp. Family: Boraginaceae |
| Lesser swinecress | Coronopus didymus Family: Brassicaceae |
| London rocket | Sisymbrium irio Family: Brassicaceae |
| Shepherd's purse | Capsella bursa-pastoris Family: Brassicaceae |
| Short pod mustard | Hirschfeldia incana Family: Brassicaceae |
| Asiatic dayflower | Commelina communis Family: Commelinaceae |
| Dodder | Cuscuta californica Family: Convolvulaceae |
| Petty spurge | Euphorbia peplis Family: Euphorbiaceae |
| Rattlesnake spurge | Euphorbia albomarginata Family: Euphorbiaceae |
| Black medic | Medicago lupulina Family: Fabaceae |
| Deerweed | Acmispon glaber Family: Fabaceae |
| Fake chocolate | Ceratonia siliqua Family: Fabaceae |
| Yellow sweet clover | Melilotus officinalis Family: Fabaceae |
| Stork's bill | Erodium cicutarium Family: Geraniaceae |
| California black walnut | Juglans californica Family: Juglandaceae |
| Henbit | Lamium amplexicaule Family: Lamiaceae |
| White horehound | Marrubium vulgare Family: Lamiaceae |
| Pomegranate | Punica granatum Family: Lythraceae |
| Common mallow | Malva neglecta Family: Malvaceae |
| Four O'clock | Mirabilis jalapa Family: Nyctaginaceae |
| Evergreen ash | Fraxinus uhdei Family: Oleaceae |
| Creeping woodsorrel | Oxalis corniculata Family: Oxalidaceae |
| California poppy | Eschscholzia californica Family: Papaveraceae |
| Orange sticky monkeyflower | Mimulus aurantiacus Family: Phrymaceae |
| Annual bluegrass | Poa annua Family: Poaceae |
| Bermuda grass | Cynodon dactylon Family: Poaceae |
| Cheat grass | Bromus tectorum Family: Poaceae |
| Cultivated oat | Avena sativa Family: Poaceae |
| Erect veldtgrass | Ehrharta erecta Family: Poaceae |
| Hare barley | Hordium murinum Family: Poaceae |
| Kikuyu grass | Cenchrus clandestinus Family: Poaceae |
| Rescue grass | Bromus catharticus Family: Poaceae |
| Ripgut brome | Bromus diandrus Family: Poaceae |
| Smooth brome | Bromus inermis Family: Poaceae |
| Tall fescue | Festuca arundinacea Family: Poaceae |
| California buckwheat | Eriognium fasciculatum Family: Polygonaceae |
| Pink knot weed | Persicaria capitata Family: Polygonaceae |
| Prostrate knot weed | Polygonum arenastrum Family: Polygonaceae |
| Scarlet pimpernel | Anagallis avensis Family: Primulaceae |
| Yerba mansa | Anemopsis californica Family: Saururaceae |
| Tree of heaven | Ailanthus altissima Family: Simaroubaceae |
| Black nightshade | Solanum nigra Family: Solanaceae |
| Tree tobacco | Nicotonia glauca Family: Solanaceae |
| Garden nasturtium | Tropaeolum majus Family: Tropaeolaceae |
| Chinese elm | Ulmus parvifolia Family: Ulmaceae |
| Stinging nettle | Urtica dioica Family: Urticaceae |
| Orange lantana | Lantana camara Family: Verbenaceae |
| Purple lantana | Lantana montevidensis Family: Verbenaceae |
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