106 BOTANY OF MICHIGAN 



procumbent sorrel. As a weed about cities and villages, but apparently 

 rare. 



GERANIACEAE. Geranium Family 



Geranium maculatum L. Wild crane's-bill. In hardwoods and along 

 old roads. Seldom plentiful. 



Geranium robertianum L. (Robertiella robertiana (L.) Hanks.). Herb 

 robert. In damp woods and on sandy beaches of Lake Michigan. Not 

 noticed as anywhere abundant. 



Geranium bicknellii Britton. BicknelPs crane-bill. Clearings, open 

 places, and burned over areas. Plentiful. W. T. S. Cornell. 



POLYGALACEAE. Milkwort Family 



Polygala paucifolia Willd. Fringed polygala. Dry shaded ground. 

 Often plentiful. Cornell. 



EUPHORBIACEAE. Spurge Family 



Euphorbia glyptosperma Engelm. (Chamaesyce glyptosperma 

 (Englm.) Small). Ridge-seeded spurge. Noticed as plentiful along 

 railroads. 



Euphorbia macidata L. (Chamaesyce maculata (L.) Small). Milk 

 purslane. In cities, villages and on roadsides. Frequent. 



CALLITRICHACEAE. Water Starwort Family 



Callitriche palustris L. Vernal water-starwort. In mud or water of 

 ponds, small lakes and sluggish streams. Often plentiful. 



Callitriche autumnalis L. Autumnal water-starwort. Frequent in 

 shallow still water of ponds, small lakes and streams. Noticed in par- 

 ticular in the Tahquamenon River in Luce County. 



EMPETRACEAE. Crowberry Family 



Empetrum nigrum L. Black crowberry. Noticed by G. H. Hicks 

 near the Pictured Rocks and by Prof. C. A. Davis near Grand Marais 

 in Alger County. 



ANACARDIACEAE. Cashew Family 



Rhus typhina L. (R. hirta (L.) Sudw.). Staghorn sumach. Usually 

 not far from Lake Michigan shore in dry open or particularly shaded 

 ground. Abundant in spots. 



Rhus glabra L. Smooth sumach. Dryish open or partially shaded 

 ground. Frequent throughout. 



Rhus toxicodendron L. (Toxicodendron radicans (L.) Kuntze). 



