114 BOTANY OF MICHIGAN 



Gentiana linearis latifolia Gray. (Dasy Stephana grayi (Kusnezow) 

 Britton). Gray's gentian. Damp sandy open or partially shaded 

 ground throughout. Often plentiful. This has been noticed mostly in 

 damp sandy ground .near the shores of the three Great Lakes. 



Halenia deflexa (Sm.) Griseb. Spurred gentian. In hardwoods and 

 often abundant. 



Menyanthes trifoliata L. Buckbean. Open bogs and often in shallow 

 water. Plentiful. 



APOCYNACEAE. Dogbane Family 



Apocynum pmdrosaemifolhim L. Spreading dogbane. Dryish ground 

 on borders of woods. Plentiful. 



Apocynum, cannabiniun hyper id folium (Ait.) Gray. (A. sibiricum 

 Jacq.). Clasping-leaved dogbane. Damp or marshy mostly open 

 ground and on banks of streams. Plentiful. 



ASCLEPIADACEAE. Milkweed Family 



Asclepias incarnata L. Swamp milkweed. Swampy and usually open 

 ground throughout. Abundant in marslry ground on and near the low 

 banks of the Tahquamenon River in Luce County. 



Asclepias syriaca L. Common milkweed. Observed by W. T. S. 

 Cornell near Manistique. Apparently rare. 



CONVOLVULACEAE. Convolvulus Family 



Convolvulus spithamaeus L. Low bindweed. Open or partially shaded 

 dry sandy ground. Plentiful throughout. 



Convolvulus septum L. Hedge bindweed. Moist open ground and 

 along streams. Apparently infrequent. 



Convolvulus arvensis L. Small bindweed. Field bindweed. In waste 

 places and along railroads. A weed that will become more and more 

 frequent. 



BORAGINACEAE. Borage Family 



Cynoglossum officinale L. Common hound's-tongue. Frequent in 

 waste places and on roadsides. 



Lappula echinata Gilibert. (Lappula lappula (L.) Karst.). European 

 stickseed. Waste places, roadsides and in cultivated grounds. Fre- 

 quent. 



Lithospermum officinale L. Common gromwell. Frequent in cities, 

 villages and on roadsides. 



Lithospermum gmelini (Michx.) Hitchc. (L. carolinense (Walt.) 

 MacM.). Hairy puccoon. In open sandy ground and on sandy beaches 

 east of Manistique. Plentiful. 



