182 SIXTEENTH REPORT. 



Slum cicutaefolium Schrank. Water Parsnip. — Common in ditches, wet 

 muflcly places, and swamps. 



Cryptotaenia canadensis (L.) DC. Honewort. — Very common in damj) 

 open woods and thickets. 



Zizia aurea (L) Koch. Golden Alexanders. — Frequent in meadows on 

 borders of woods and banks of streams. Abundant in prairie-like land on 

 the delta islands of St. Clair River. 



Taenidia integerrima (L.) Drude. Yellow Pimpernel. — Common in 

 shaded dry and sandy ground. 



Thaspium barbinode (INIichx.) Hairy-jointed Meadow-Parsnip. — Near 

 Port Franks. Apjuirently rare. N. Tripp. 



Pastinaca satvia L. Parsnip. — Frequent and well established on road- 

 sides, banks of streams, along railways and in waste places. 



Heracleum lanatum Michx. Cow Parsnip. — Frequent on l^anks of streams 

 and in open rich woods. Sometimes cultivated as an ornamental plant. 



Conioselinum chinense (L.) BSP. Hemlock Parsley. — Abundant north of 

 Thedford in shade on a wet springy bank of a receding lake. Not noticed 

 elsewhere. 



Angelica atropurpurea L. Great Angelica. — Occasional along damp banks 

 of streams near Blackwell Station. T. C. Wheatley. 



Daucus carota L. Carrot. — Becoming too frequent on roadsides, along 

 railways, in depot grounds, and fast creeping into meadows, hay and grain 

 fields, as a bad weed. 



Cornaceae. Dogwood Family. 



Cornus canadensis L. Dwarf Cornel. — Frequent in damp woods and 

 thickets. 



Cornus florida L. Flowering Cornel. — A few trees near Sarnia in dry 

 ground. More frequent along and on the sides of the high banks of the 

 Aux Sables River. 



Cornus circinata L'Her. Round-leaved Cornel. — Frequent in dry and 

 sandy ground, especially on and near the Lake Huron shore. Abundant 

 at Port Franks. 



Cornus amomum ]\Iill. Silky Cornel. — Frequent in damp ground and wet 

 places. 



Cornus stolonifera Michx. Red Osier Dogwood. — Very common in wet 

 places. Abundant and usually in damp sand at Port Franks. 



Cornus paniculata L'Her. Panicled Cornel. — Very common on borders of 

 Avoods, along l)anks of streams, and in damp thickets. 



Cornus alternifolia L. f. Alternate-leaved Cornel. — Frequent in rich open 

 woods and thickets. 



Nyssa sylvatica ALarsh. Black Gum. Pepperidge.^ — Occasional and usually 

 in rich open ground with other trees. Noticed near the high l)anks of the 

 Au Sable River Ijclow Rock Glen. 



Ericaceae, Heath Family. 



Chimaphila umbellata (L.) Nutt. Pipsissewa. Prince's Pine. — Frequent 

 in dry open woods, especially on the shaded sand dunes along the Lake Huron 

 Shore and under pines at Port Franks. Moneses uniflora (L.) Gray, one- 

 flowered pyrola, not yet noticed in Lam])ton Co. but found under pines near 

 Port Huron, Mich. 



