THE COLUMBIAN EXPOSITION, 457 



Rubus inllosus, Ait. Blackberry. 



Rumex crispus, L. Curled Dock. Narrow-leaved Dock. 



Sambucus canadensis, L. Elder. 



Sanguinaria canadensis, L. Blood-root. 



Sassafras officinale, Nees. Sassafras. 



Scutellaria lateriflora, L. Skullcap. 



Solanum dulcamara, L. Bittersweet. 



Tanacetuvi vulgare, L. Tansy. 



Taraxacum officinale, Weber. Dandelion. 



Ulmusfulva,M\chx. Slippery Elm. Red Elm. 



Veronica virginica, L. Culver's Physic. 



Xanthoxylum americanum, Mill. Prickly Ash. • 



THE GRASSES OF MICHIGAN, NATIVE AND NATURALIZED. 



Numbering 136 species and varieties: 



Agropyrum repens, Beauv. Couch. Quitch. Quick or Quack-grass. 

 " dasystachyum, Vasey. 



" violaceum, Lange. 



" caninum, R. and S. Awned Wheat-grass. 



Agrostis alba, L. White Bent Grass. 



" " var. vulgaris, Thurb. Red Top. 



" perennans, Tuckerman. Thin-grass. 

 " scabra, Willd. Hair-grass. 

 " canina, L. Brown Bent-grass. 

 Alopecurus pratensis, L. Meadow Foxtail. 

 •' geniculatiis, L. Floating Foxtail. 



'• " var., aristulatus, Torr. 



Ammophila arundinacea, Host. Sea Sand-reed. 

 Andropogon furcatus, Muhl. Beard-grass. 



" scoparius, Michx. 



Anthoxanthum odoratum, L. Sweet Vernal Grass. 

 Apera spica-venti. Beauv. 



Aristida purpurascens, Poir. Triple-awned Grass. 

 Arrhenatherum avenaceum, Beauv. Oat-grass. 

 Asprella hystrix, Willd. Bottle-brush Grass. 

 Avena striata, Michx. Oat-grass. 

 Bouteloua racemosa, Lag. Grama-grass. 

 Braehyelytrum aristatum, Beauv. 

 Bromus kalmii. Gray. Wild Chess. 

 '" secalinus, L. Cheat or Chess. 

 " eiliatus, L. 

 " asper, L. 



" breviaristatus, Thurb. 

 Calamagrostis canadensis, Beauv. Blue- Joint. 

 " stricta, Trin. 



" lapponica, Trin. 



" longifolia, Hook. 



Cenchrus tribuloides, L. Hedgehog or Bur-grass. 

 Chrysopogon nutans, Benth. Indian Grass. 

 Cinna arundinacea, L. Wood Reed-grass. 



" pendula, Trm. 

 Dactylis glomerata, L. 

 Danihonia spicata, Beauv. Wild Oat-grass. 



" intermedia, Vasey. 



Deschampsia flexuosa, Trin. Common Hair-grass. 



" caespitosa, Beauv. 



Diarrhena americana, Beauv. 

 Eatoniaobtusata, Gray. 



" pennsylvanica, Gray. 

 " dudleyi, Vasey. 

 Eleusine indica, Gaertn. Dog's-tail or Wire-grass. 



58 



