288 



REPORT OF THE 



Variegated Milk- 

 weed. 



Four-leaved Milk- 

 weed. 



Swamp Milkweed 



Butterfly-weed 3 

 Pleurisy -root. 



Whorled Milk- 

 weed. 



Ascl 



epias vanegata, 



Ann Arbor. 



Asclepias quadrifolia, Jacq. 



Ann Arbor. 



Asclepias incarnata, L. 



Ann Arbor ; Ft. Gratiot ; Grand Traverse Co.; S. W. (Wright). 



Asclepias tuberosa, L. 



Ann Arbor ; Ft. Gratiot. 



Asclepias veiticiilata^ L. 



S. Mich. (Wright). 



Green Milkweed. Acerates viridiflora. Ell. (Asclepias lanceolata—W.) 



Ft. Gratiot ; S. W. Mich. (Wright). 



White Ash. 



Red Ash. 



Green Ash. 



Black Ash, 

 Water Ash. 



Blue Ash. 



Comparatively rare. 



Wild Ginger. 



OLEACEiE. 



Fraxinus Americana, L. (F. acuminata —W.) 



Ann Arbor ; Prummond's I. ; Fmmet Co. Common in the Southern Pe- 

 ninsula, but apparently less frequent northward. 



Fraxinus pubescens, L. 



Drummond'sl.; S. Mich. (Wright). 



Fraxinus viridis, Michx. f. 



Ann Arbor. 



Fraxinus samuucifolia, Lam. 



Ann Arbor; Sugar I., common; Pine Lake; S. W. (Wright). 



Fraxinus qnarlranjrnlata, Michx. 



S. Mich, i Univ. Herb). The wood of the Ash is highly esteemed for lt» 

 strength and suppleness, especially the first and lustspeei . s above. 

 The White Ash is most crmmon and most extensively used, its an- 

 nual growths being least liable to separate into layeis. It is much 

 preferable for oars, being light as well as tough when seasoned. II 

 is also extensively used by fisheinun for hoops and staves, but fof 

 this the Black Ash is always preferred frcm the greater ease with 

 which its layeis are separated. 



'the Black Ash is a smaller tree, and is generally found in the 

 vicinity of swamps or along streams. The value of its timber is 

 increased by the rapidity of its growth. It is torgher and more 

 elastic than the White Ash, but less durable upon exposure to the 

 vicissitudes of moisture and dryness. North ol the Straits of Matfc- 

 inac this is the prevailing specks. The Blue Ash is found only in 

 the southern part of the State. Its timber is prized equally with 

 that of the Wbite Ash, for which it is substituted in many of its 

 uses. Ihe Red Ash is a smaller tree andfuinishcs less valuable 

 timber. 



ABISTOLOeHIACEJE. ' 



Asarum Canadense, L. 



Ann Arbor. 



Poke, Scoke, Gar- 

 get, Pigeon- 

 berry. 



Maple-leaved 

 Gocsolbot. 



Phytolacca 



Si Mich. (Wri 



PHYTOLACCACEJS. 



decandra; L. 



o'ht). 

 CHENOPODIACEiE. 



Chenopodium hybridnm, L. 



Ann Arbor; Drummond's I.: Mackinac. 



