PAPERS ON BIOLOGY AND AGRICULTURE 



173 



cock Comity, who was, according to Lapham, the best 

 recorder of Illinois plants up to 1859. Another active 

 botanist of this period was Chas. A. Geyer, who pub- 

 lished at least one list of Illinois plants during this inter- 

 val. Dr. Engelmann, of St. Louis, furnished informa- 

 tion concerning the flora in the southern part of the state. 

 In regard to his catalogue, Lapham says, ''It will be 

 readily understood that the following is a pretty full list 

 of the plants growing naturally within the state of Illi- 

 nois." The great increase in additional species repre- 

 sents not only the fact that probably certain parts of the 

 state were settling up rapidly, but possibly even more 

 the stimulation of botanical interest in various parts of 

 the state. The introduced species occurring in this list 

 are placed below. Possibly some of those included were 

 here in 1826, not being seen by Beck; but undoubtedly 

 the majority came in during this period. 



PLANT IMMIGRANTS FROM 1826-1859 



Sisymbrium officinale 



Sisymbrium Irio 



Erysimum cheiranthoides 



Capsella Bursa-pastoris 



Brassica arvensis 



Brassica nigra 



Camelina sativa 



Radicula Nasturtium-aquaticum 



Saponaria officinalis 



Saponaria Vaccaria 



Agrostemma Githago 



Stellaria media 



Cerastium viscosum 



Portulaca oleracea 



Malva rotundifolia 



Malva sylvestris 



Malva verticillata 



Sida spinosa 



Abutilon Theophrasti 



Hibiscus Trionum 



Trifolium procumbens 



Trifolium arvense 



Melilotus alba 



Medicago sativa 



Medicago lupulina 



Pastinaca sativa 



Bupleurum rotundifolium 



Centaurea Cyanus 



Tussilago Farfara 



Grindelia squarrosa 



Dipsacus sylvestris 



Plantago lanceolata 



Verbascum Blattaria 



Mentha spicata 



Satureja hortensis 

 Melissa officinalis 

 Nepeta Cataria 

 Nepeta hederacea 

 Marrubium vulgare 

 Lithospermum arvense 

 Nicandra Physalodes 

 Cannabis sativa 

 Delphinium Consolida 

 Linum usitatissimum 

 Solanum Dulcamara 

 Rosa rubiginosa 

 Chenopodium murale 

 Chenopodium album 

 Chenopodium Botrys 

 Chenopodium ambrosioides 

 Chenopodium anthelminticum 

 Amaranthus hybridus 

 Amaranthus spiiiosus 

 Amaranthus retroflexus 

 Aethusa Cynapium 

 Conium maculatum 

 Inula Helenium 

 Anthemis Cotula 

 Chrysanthemum Leucanthemum 

 Cirslum arvense 

 Cirsium lanceolatum 

 Arctium minus 

 Taraxacum officinale 

 Sonchus oleraceus 

 Polygonum Persicaria 

 Polygonum orientale 

 Rumex crispus ' 



Fagopyrum esculentum 



