184 SIXTEENTH REPORT. 



low marshy ground. L. quadrifolia, L., Crosswort, Whorled Loosestrife, not 

 yet noticed in Lambton Co., Ijut found near Port Huron, Mich. 



Lysimachia numularia L. Moneywort. — A frequent escape from cultiva- 

 tion. ()ften a bad lawn weed. North of Thedford it has become very 

 abundant on the banks of ditches and creeks and following the streams 

 down it covers the adjacent marshes in thick mats. 



Lysimachia thyrsiflora L. Tufted Loosestrife. — Frequent in ditches, pools, 

 small slow streams and very wet places. 



Steironema ciliatum (L.) Raf. Fringed Loosestrife. — Common in low 

 ground, damp open woods and thickets. 



Steironema quadriflorum (Sims.) Hitchc. Prairie Moneywort. — Frequent 

 in low marshy ground. 



Trientalis americana (Pers.) Pursh. Star Flower. — Common in rich 

 woods and thickets. 



Oleaceae. Olive Family. 



Fraxinus americana L. White Ash. — Frequent in rich and moist ground 

 with other trees. 



Fraxinus pennsylvanica Marsh. Red Ash. — Occasional in low damp 

 ground with other trees. 



Fraxinus pennsylvanica lanceolata (Barkh.) Sarg. Green Ash. — Occa- 

 sional on low ground and along streams with other trees. 



Fraxinus nigra Marsh. Black Ash. — Formerly very abundant in swamps 

 and wet woods, but becoming scarce on account of drainage and fires. 



Syringa vulgaris L. Common Lilac. — Occasionally escaping from cultiva- 

 tion to roadsides and persisting. 



Ligustrum vulgare L. Privet. — Inclined to escape and per.sist on road- 

 sides. Noticed especially north of Sarnia. 



Gentianaceae. Gentian Family. 



Gentiana procera Holm. Smaller Fringed Gentian. — Frequent in moist 

 ground. Have not been al^le to fine G. crinita in Lambton Co., Ont., nor 

 G. procera in St. Clair Co., Mich. 



Gentiana quinquefolia L. Stiff Gentian. — Usually on moist hillsides, occa- 

 sionally on river bottoms. Noticed at Rock Glen. Newton Tripp. 



Gentiana puberula Michx. Downy Gentian. Dry ground on Squirrel 

 Island. Al)undant. Not noticed elsewhere. 



Gentiana saponaria L. Soapwort Gentian. — Noticed in moist ground on 

 Squirrel Island, one of the delta islands of St. Clair River. Apparently 

 rare. 



Gentiana andrewsii Griseb. Closed Gentian. — Frequent in moist ground. 

 Flowers often jnu-e white. 



Halenia deflexa (Sm.) Griseb. Spurred Gentian. — Occasional in damp 

 open woods and thickets. Newton Tripp. 



Bartonia virginica (L.) BSP. Yellow Bartonia. — Occasional in poor and 

 sandy ground. 



Menyanthes trifoliata L. Buckbean. — Occasional in bogs and shallow 

 water. Becoming scarce on account of drainage. Abundant at Port Franks. 



