FLORA OF MICHIGAN. 59 





 Nepeta Cataria, L. Catnip. 



" Glechoma, Benth. Ground Ivy. Gill-over-the-Ground. ' 

 Nicandra physaloides, Gaertn. Apple of Peru. 

 Nicotiana rustica, L. Wild Tobacco. 

 Panicum Crus-galli, L. Barnyard-Grass. 



glabrum, Gaudin. 



" sanguinale, L. Crab- or Finger-Grass. 

 Pastinaca sativa, L. Parsnip. 

 Phalaris Canariensis, L. Canary-Grass. 

 Phleum pratense, L. Timothy. Herd's-Grass. 

 Plantago lanceolata, L. Ribgrass. English Plantain. 

 Poa annua, L. Low Spear-Grass. 



" compressa, L. Wire-Grass. English Blue-Grass. 

 Polygonum Convolvulus, L. Black Bindweed. 



" Persicaria, L. Lady's Thumb. 



Populus alba, L. White Poplar. Abele. 

 Portulaea oleracea, L. Purslane. 

 Ranunculus acris, L. Tall Buttercups. 



bulbosus, L. Bulbous Buttercups, 

 Rumex Acetosella, L. Field or Sheep Sorrel. 



" crispus, L. Curled Dock. Narrow-leaved D. 

 " obtusifolius, L. Bitter Dock. 

 Salix alba, L. White Willow. 

 " Babylonica, Tourn. Weeping Willow. 

 " fragilis, L. Crack Willow. 

 Saponaria officinalis, L. Bouncing Bet. 



" Vaccaria, L. 

 Scleranthus annuus, L. Knawel. 

 Sedum acre, L. Mossy Stone-crop. 



" Telephium, L. Live-for-ever. 

 Setaria glauca, Beauv. Foxtail. Pigeon-Grass. 



" viridis, Beauv. Green Foxtail. Bottle-Grass. 

 Silene Armeria, L, Sweet- William Catchfly. 

 " Cucubalus, Wibel. Bladder Campion. 

 " noctiflora, L. Night- flowering Catchfly. 

 Sisymbrium officinale, Scop. Hedge Mustard. 

 Solanum Dulcamara, L. Bittersweet. 

 Sonchus asper, Vill. Spiny-leaved Sow-Thistle. 



" oleraceus, L. Common Sow-Thistle. 

 Stellaria media, Smith. Chick weed. 

 Symphytum officinale, L. Comfrey. 

 Tanacetum vulgare, L. Tansy. 

 Taraxacum officinale, Weber. Common Dandelion. 

 Thlaspi arvense, L. Field Pennycress. 

 Tragopogon pratensis, L. Goat'e-beard. 

 Trifolium agrarium, L. Yellow or Hop-Clover. 

 arvense, L. Rabbit-foot Clover. 

 hybridum, L. Alsike Clover. 

 medium, L. Zigzag Clover. Mammoth Clover. 

 pratense, L. Red Clover. 

 procumbens, L. Low Hop-Clover. 

 Tussilago Farfara, L. Coltsfoot. 

 Urtica dioica, L. Great Stinging Nettle. 

 Verbascum Blattaria, L. Moth Mullein. 

 Verbascum Thapsus, L. Mullein. 

 Veronica arvensis, L. Corn Speedwell. 

 Viola tricolor, L., var. arvensis, DC. Pansy. Heart's-Ease. 



PARASITIC FUNGI. 



When a large area is cleared of vegetation of a miscellaneous character, 

 and the ground is then covered with plants of one kind, this large area, 

 after a time is much more liable to be damaged by injurious insects than 

 it was before the change was made. The increased supply of suitable food 

 encourages certain one or more kinds of insect enemies. A similar state 

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