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ILLINOIS STATE ACADEMY OF SCIENCE 



coronaria, RapJianus sativus, Brassica alba, Brassica 

 Nans, Brassica campestris, Hesperis 7natronalis, Trifol- 

 ium incarnatum, Physalis Alkekengi, Petunia violacea, 

 Coreopsis tinctoria, Lycium halimifolium, and possibly 

 Euphorbia marginata and Cynanchum nigrum. The fol- 

 lowing, besides two or three already mentioned, are im- 

 migrants from the West : Atriplex argentea, Erysimum 

 asperum, Crotallaria sagittalis, Oenothera pallida, 

 Oenothera speciosa, Oenothera serrulata, Verbena bipin- 

 natifida, Solanum elaeagnifolium, Physalis pumila, Phy- 

 salis longifolia, Plantago aristata (probably), 7va xanthi- 

 folia, Lepachys columnaris, Artemisia Uansana, Polan- 

 isia trachysperma, and probably KaUstroemia maxima 

 and Gilia linearis. The following is a list by families of 

 the entire introduced flora enumerated in the preceding 

 pages. Shrnb and tree introductions, such as Popidus 

 alba, Salix alba, etc., are excluded, as they are hardly 

 to be counted as weeds. It is realized that the list is 

 probably not complete. The nomenclature is that of 

 Gray's Manual, 7th edition. 



GRAMINEAE 



Eleusine indica, an., Old World 



trop. 

 Eragrostis magastachya, an., 



Eur. 

 Eragrostis minor, an., Eur. 

 Digitaria sanguinalis, an., Eur. 

 Digitaria humifusa, an., Eur. 

 Setaria glauca, an., Eur. 

 Setaria viridis, an., Eur. 

 Setaria verticillata, an., Eur. 

 Setaria italica, an., Eur. 

 Echinochloa crusgalli, an., Eur. 

 Bromus secalinus, an., Eur. 

 Bromus hordeaceus, an., Eur. 

 Bromus tectorum, an., Eur. 

 Bromus racemosus, an., Eur. 

 Bromus Inermis, per., Eur. 

 Dactylis glomerata, per., Eur. 

 Poa annua, an., Eur. 

 Poa compressa, per., Eur. 

 Phalaris canariensis, an., Eur. 

 Agropyron repens, per., Eur. 

 Agropyron biflorum, per., Amer. 

 Agropyron caninum, per., Amer. 

 Hordeum jubatum, an., Cosmop. 

 Festuca elatior, per., Eur. 

 Lolium perenne, per., Eur. 

 Cynodon Dactylon, per., Eur. 

 Panicum miliaceum, an., Eur. 

 Avena fatua, an., Eur. 



GRAMINEAE— Concluded 



Sorghum halepense, per., Eur. 

 Phleum pratense, per., Eur. 

 Agrostis alba, per., Cosmop. 

 Alopecurus pratensis, per., Eur. 



LILIACEAE 



Hemerocallis fulva, per., Eur. 

 Muscari botryoides, per., Eur. 

 Allium vineale, per., Eur. 



URTICACEAE 



Urtica dioica, per., Eur. 

 Cannabis sativa, an., Asia. 

 Humulus Lupulus, per., Cosmop. 



POLYGONACEAE 



Polygonum Convolvulus, an., 

 Eur. 



Polygonum Persicaria, an., Eur. 



Polygonum orientale, an., India. 



Polygonum aviculare, an., Cos- 

 mop. 



Rumex Acetosella, per., Eur. 



Rumex crispus, per., Eur. 



Rumex elongatus, per., Eur. 



Rumex obtusifolius, per., Eur. 



Pagopyrum esculentum, an., 

 Eur. 



