OF DENISON UNIVERSITY. 



A List of the Worst Weeds. 



In pastures — Cnicus lanceolatus Hoffin., Thistle. Vernonia altissi- 



ma Nutt., Iron-weed. Verbena urticaefolia L., 

 White | Vervain. Verbena hastata L., Blue Ver- 

 vain. Verbascum Thapsus L., Common Mul- 

 lein. Daucus Carota L., Carrot. (In places. ) 



In lawns — Flantago major L. , Common Plantain. Plantago lanceo- 



lata L., English Plantain. Nepeta Glechoma Benth., 

 Ground Ivy. 



In meadows — Erigeron animus Pers., Fleabane. Erigeron strigosus 



Muhl. Daisy Fleabane. Erigeron Philadelphicus 

 L., Common Fleabane. Rudbeckia hirta L., 

 "Brown Eyed Susans." Chrysanthemum Leucan- 

 themum L., Ox Eye Daisy, (in places). 



In gardens — Portulaca oleracea L. , Purslane. Abutilon Avicennae 



Gaertn.' fcVelvet Leaf. Datura Stramonium L. 

 Jamestown weed. Datura Fatula L., Purple 

 Jamestown-weed. Rumex crispus L. , Curled Dock. 



In cultivated grounds — Convolvulus sepium L. var. Americanus 



Sims. Lychnis Githago Lam., Corn Cockle. 

 Verbascum Blattaria L., Moth Mullein. 

 Dipsacus sylvestris^Iill. Wild Teasel. Pastinaca Sativa. L., Pars- 

 nip. Heracleum lanatum Michx., Cow Parsnip. Melilotus alba 



Lam., Sweet Clover. Sisymbrium officinale Scop., Hedge Mustard. 



Brassica nigraJKoch., Black Mustard Arctium Lappa L., Burdock. 



Urtica gracilis Art., Nettle, are the mosMroublesome in fence corners 



and moist situations. 



Times of Flowering 



A record^has been keptj for the last three years of the plants 

 which bloom late in the fall and early in the spring. The large per 

 cent, of introduced species which blossom in the fall is noticeable, 

 while the early spring plants are generally native. 



The following'Tigures are fairly accurate for the ji umber which 



bloom, in the vicinity of Granville: 



In November, 44 species, 17 native, 27 introduced. 



" December, 11 " 2 " 9 



" January, 14 " 8 " 6 



" February. 9 " 7 " 2 



" March, ' 17 " 14 " 3 



