22 C. K. DODGS 



Polygonum aviculare L,., Knot Grass, Door-weed. — ^Common as a weed 

 in cities and villages, especially in yards, lawns and waste places. 



Polygonum erectum L,. Erect Knotweed. — On roadsides and in streets 

 of cities, villages and in waste places. Plentiful throughout. 



Polygonum tenue Michx. Slender Knotweed. — Dry open ground near 

 Marquette, and on summit of Huron Mountain near Huron Mountain Club. 

 Probably frequent throughout. 



Polygonum lapathifolmm L,. {Persicaria lapathifolia L,., S. F. Gray). 

 Pale Persicaria. — Wet open places at Marquette and Big Bay. Frequent 

 throughout. 



Polygonum amphihium L,. {Persicaria amphibia L,., S. F. Gray). Water 

 Persicaria. — Low banks of streams and small lakes and often in shallow 

 water where it floats like a pondweed." 



Polygonum Hydropiper L- (Persicaria hydropiper L,., Opiz.). Common 

 Smartweed. — Moist open or partially shaded ground near Marquette and 

 at Big Bay. Probably frequent throughout. 



Polygonum acre HBK. (Persicaria punctata Ell., Small). Water Smart- 

 weed. — Wet open places or often in shallow water near Marquette and at 

 Big Bay. Frequent throughout. 



Polygonum Persicaria L,- (Persicaria persicaria L., Small.). Lady's 

 Thumb. — Open damp ground, usually a weed in cities, villages and waste 

 places. Common throughout. 



Polygonum hydropiperoides Michx. (Persicaria hydropiperoides Michx., 

 Small). Mild Water Pepper. — Margin of Independence Lake and in shal- 

 low water at Big Bay. Apparently infrequent. 



Polygonum sagittatu,m L. (Tracaulon sagittatum L., Small.). Arrow- 

 leaved Tear- thumb. — Low open or partially shaded ground about Marquette. 

 Frequent throughout. 



Polygonum Convolvulus Iv. (Tiniaria convolvulus Webb & Moq.). Black 

 Bindweed. — A weed in gardens, other cuhivated grounds and waste places. 

 Common throughout. 



Polygonum cilinode Michx. (Tiniaria cilinodis Michx., Small). Fringed 

 Black Bindweed. — ^Dry sandy ground or rocky hills near Marquette. Fre- 

 quent throughout- 



Fagopyrum esculentum Moench. (P. fagopyrum L., Karst.). Buck- 

 wheat. — Occasional in waste places of cities and villages throughout. Per- 

 haps not a permanent escape. 



Polygonella articulata (L.) Meisn, Coast Jointweed. — Dry open sandy 

 ground near Marquette. Probably frequent throughout. 



chb;nopodiac]iae 



Cycloloma atriplicifolium (Spreng.) Coult. Winged Pigweed. Sandy 



ground in waste places about Marquette. 



Chenopodimn Botrys L. Jerusalem Oak.— In waste places as a weed 

 about cities and villages. 



Chenopodium capitatum (L.) Asch. (Blitum capitatum L.). Strawberry 

 Blite.— Dry open ground near Marquette. Occasional throughout. 



