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![Black medic](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321827457-JPRE3EL6ZZRSTI6LS0NN/Black+medic+-+Cowles.jpg)
![Bull thistle basal rosette](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321857173-QKM541W72W0HXB8A4FM6/Bull+thistle+basal+rosette+-+Shephard.jpg)
![Camelthorn basal rosette](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321872990-IB505LDQOL420HZJB6KA/Camelthorn+6+natrem.jpg)
![Immature cheatgrass](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321915686-HJVOIHJHC5VFC5P97ZDW/Cheatgrass+immature+Old+5228079.jpg)
![Dalmatian toadflax seedlings](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321934197-FOZG16TCOEHP4P0N76NO/Dalmation+toadflax+4+Wilson.jpg)
![Diffuse knapseed basal rosette](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321952515-7UG0HRGS1MHTZTO848PW/Diffuse+knapweed+3+Old.jpg)
![Field bindweed 8 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488321969742-KBU1DIBV0Z9M4FZ6FXEH/Field+bindweed+8+DiTomaso.jpg)
![Filaree 7 Phillips.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322001764-O17Z4X4NHYVVS8AYASWY/Filaree+7+Phillips.jpg)
![Filaree 8 Phillips.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322043816-1YP4XMTC0TADY59XAWMY/Filaree+8+Phillips.jpg)
![Goathead 6 Westra.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322058390-RE040GDAS5ENR5UCHCX9/Goathead+6+Westra.jpg)
![Horehound 8 Eisenstein.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322078376-D4MLD74G9EG7N1F51QMR/Horehound+8+Eisenstein.jpg)
![Horseweed 4 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322112048-DKPT90TQAN6SIZZ6WCGZ/Horseweed+4+DiTomaso.jpg)
![Kochia 6 Westra.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322144873-TATW68F7R9GQRFR2GKDI/Kochia+6+Westra.jpg)
![Kochia 2 Westra.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322169149-V7T1AOYZ3CAN8AUYUBIL/Kochia+2+Westra.jpg)
![Kochia 3 Westra.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322185466-U6SEPFUZCGHJ5HU0L55Z/Kochia+3+Westra.jpg)
![Leafy spurge 9 Ackley.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322216248-EFIHJ66F1214VT6R2409/Leafy+spurge+9+Ackley.jpg)
![Mullein 3 Alexander.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322248209-ID5OM6D81KNNNSRD73BR/Mullein+3+Alexander.jpg)
![Musk thistle 5 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322277346-WM28QK9PSRETABK4NB4Z/Musk+thistle+5+DiTomaso.jpg)
![Palmer amaranth 5 Ackley.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322320692-7TSUKGC37TSCMKKTGP9W/Palmer+amaranth+5+Ackley.jpg)
![Prickly lettuce 5 Dewey.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322379539-E4T0FY2X47Y4M8ECVWVV/Prickly+lettuce+5+Dewey.jpg)
![Purslane 4 Westra.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322380202-QTTER4T5TSAUZB3OSSH4/Purslane+4+Westra.jpg)
![Ragweed 4 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322383199-6N4D765HKS97G5A50W48/Ragweed+4+DiTomaso.jpg)
![Ragweed 6 Dewey.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322407062-ABALMJ1IVO5F04QXBO8T/Ragweed+6+Dewey.jpg)
![Russian knapweed 4 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322428143-PRA0VMGC8CGCGQUCEGMD/Russian+knapweed+4+DiTomaso.jpg)
![Russian thistle 3 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322462416-ZXYY4EGG56H99WAOV2IA/Russian+thistle+3+DiTomaso.jpg)
![Salsify 6 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322487852-UIJNTV8UTQUOZ9FQLT99/Salsify+6+DiTomaso.jpg)
![Scotch thistle 3 DiTomaso.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322529009-6PJOF2484B5IB3XPD50M/Scotch+thistle+3+DiTomaso.jpg)
![Siberian elm 6 DeGomez.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322551114-6A9GCWITTX74X7FFWMZT/Siberian+elm+6+DeGomez.jpg)
![Spotted knapweed 6 Mehrhoff.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322566107-6E72ESTMJJ3MJROALCY8/Spotted+knapweed+6+Mehrhoff.jpg)
![Spotted knapweed 7 Routledge.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322588699-Q4ON4WET38T7SW87XJJN/Spotted+knapweed+7+Routledge.jpg)
![Sweetclover 6 Rawlins.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322649115-VOH1QGWZ0YN2LX52DMG3/Sweetclover+6+Rawlins.jpg)
![Teasel 6 Cardina.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322667228-HMK2GSBICOP7LZOLO2K9/Teasel+6+Cardina.jpg)
![Teasel 4 Frates.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322697564-4RQNNFVNB8IOU8766NR7/Teasel+4+Frates.jpg)
![Tumble mustard 7 Licher.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322710221-4K84OQUBGBUWU6DA3MAR/Tumble+mustard+7+Licher.jpg)
![Whitetop 4 Beck Sebastian.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322727425-ML3ON2WEQDHZ5ZDMM75I/Whitetop+4+Beck+Sebastian.jpg)
![Yellow starthistle 4 Dewey.jpg](https://images.squarespace-cdn.com/content/v1/57dc117803596e07ba9b9bfb/1488322779012-QK6Y091L18FAWG1QN3WO/Yellow+starthistle+4+Dewey.jpg)