218 Proceedings of Indiana Academy of Science 



No. times reported 

 No. times as first in 



Name reported importance 



1. Canada thistle (Cirsiiun arvense) 38 26 



2. White top {Erigeron annuus and ramosiis) . . . .32 4 



3. Wild garlic {Allium vineale) 21 16 



4. Buckhorn {Plantago lanceolata) 29 3 



5. Wild morning glory {Convolvulus sepmm) . . . AS 5 



6. Red sorrel (Rumex acetosella) 17 3 



7. Horse or Bull nettle {Solanum carolinense) ... .15 1 



8. Wild carrot {Dcmcus carota) 15 1 



9. Cocklebur (Xanthium canadense and covinmtic) .11 1 



10. Ragweed (Ambrosia art emisiif alia) 11 1 



11. Quack gi-ass (Agropyron repcns) 11 



12. Dodder (Cuscuta epithymuyn and arvensis) ... .11 



13. Wild mustard (Brassica spp. and Barbarea 



vulgaris) 9 1 



14. Foxtail (Setaria glaiica and viridis) 9 



15. Wild Lettuce (Lactiica scariola) 6 2 



16. Ox-eye daisy (Chrysanthemum leucanthemum) 5 2 



17. Cockle (Agrostemma githago) 5 



18. Smartweed (Polygomim spp.) 5 



19. Crab grass (Digitaria sangidnalis) 5 



20. Bindweed (Convolvulus arvensis) 5 



21. Sandbur (Cenchrus panciflorus) 5 



22. Narrow leaf dock (Rumex acetosella) 5 



23. Wild Sweet Potato (Ipomoea pandurata) 4 1 



24. Flower-of-an-hour (Hibiscus trionum) 4 



25. Bracted plantain (Plantago aristata) 4 



26. Cheat (Brcmiis secalinus) 3 



27. Trumpet creeper (Tecoma radicans) 3 



28. Wild onion (AIHh))i canadense) 3 



29. Wild parsnip (Pastinaca saliva) 3 



30. Common plantain (Plantago rugelii) 3 



31. Peavine (Vicia spp.) 3 



32. .Johnson grass (Holcus halepen.sis) 3 



33. Butter-print weed (Abutilon theophrasti) 3 



34. Pigweed (Amaranthus retroflexus) 3 



35. Ironweed (Vernonia fascictdata and novebora- 



censis) 2 1 



The following species were each reported twice, although in no case 

 as first in importance: 36, white snakeroot (Eupatorium urticaefolium) ; 

 37, wild cucumber (Echinocystis lobata) ; 38, Russian thistle (Salsola 

 kali, var. tenuifolia) ; 39, burdock (Arctium minus) ; 40, broom sedge 

 (Andropogon virginicus) ; 41, chickweed (Stellaria media). 



The following were each reported once and in no case as first in 

 importance: 42, chicory (Cichorinm, intybus) ; 43, horseweed (Erigeron 

 canadensis) ; 44, water hemlock (Cicuta maculata) ; 45, jimson weed 

 (Datura stramonium) ; 46, fall aster (Aster ericoides) ; 47, cedar weed 



