166 SIXTEENTH REPORT. 



Argemone mexicana L. Mexican Poppy. — Occasional in the vStreets of 

 Sarnia and along railways. 



Fumariaceae. Fumitory Family. 



Adlumia fungosa (Ait.) Greene. Climbing Fumitory. — Occasional in 

 woods and thickets. A beautiful vine. Abundant in places in northeastern 

 parts of the county. 



Dicentra cucullaria (L.) Bernh. Dutchman's Breeches. — Occasional in 

 damp rich woods and thickets. Newton Tripp. 



Dicentra canadensis (Goldie) Walp. Squirrel Corn. — Frequent in rich 

 woods. 



Corydalis sempervirens (L.) Pers. Pale Corj'^dalis. — Occasional in dry and 

 sandy ground. 



Corydalis aurea Willd. Golden Corydalis. — Occasional on shaded sides of 

 sand dunes at Port Franks. Not noticed elsewhere. Newton Tripp. 



Cruciferae. Mustard Family. 



Draba caroliniana Walt. Carolina Whitlow Grass. — Common on sand 

 ridges and in sandy places along the Lake Huron shore. 



Berteroa incana (L.) DC. Hoary Alyssum. — About a grain elevator at 

 Point Edward. Rare. 



Lobularia maritima (L.) Desv. — Sweet Alyssum. — Inclined to escape and 

 persist in cemeteries and yards. 



Alyssum alyssoides L. Yellow Alyssum. — Common in sandj' ground in 

 fields, about towns and villages. 



Thlaspi arvense L. Field Penn}^ Cress. — Occasional in dry and sandy 

 ground along railways, in towns and villages. 



Lepidium virginicum, L. Wild Peppergrass. — A common weed on road- 

 sides, in gardens and fields. Much resembling the next. 



Lepidium apetalum Willd. Apetalous Peppergrass. — Common in dry and 

 sandj^ ground on roadsides and along railways. Much resembling the pre- 

 ceding. 



Lepidium sativum L. Garden Cress. — Occasional as an escape in the 

 streets and waste places of cities, villages and towns. 



Lepidium campestre (L.) R. Br. Field Cress. Cow Cress. — Occasional 

 in cultivated grounds and waste places. Newton Tripp. 



Capsella bursa-pastoris (L.) Medic. Shepherd's Purse. — A common weed 

 in gardens and cultivated fields. 



Camelina sativa (L.) Crantz. False Flax. — Occasional in towns, villages, 

 and along railways. 



Neslia paniculata (L.) Desf. Ball Mustard. — Recentlj' introduced as a 

 weed near Forest. N. Tripp. 



Cakile edentula (Bigel.) Hook. American Sea Rocket.— Common in sand 

 along the siiores of Lake Huron and St. Clair River. Not noticed elsewhere. 



Raphanus sativus L. Radish. — Inclined to persist in old gardens for many 

 years. 



Eruca sativa Mill. Roquette. Rocket Salad. — Becoming a weed in 

 towns and fields. Recent. 



Brassica alba (L.) Boiss. White Mustard. — Occasionally noticed in towns, 

 villages and along railways. 



Brassica arvensis (L.) Ktze. Charlock. Wild Mustard. — Too common in 

 cultivated grounds. A pernicious weed in grain fields. 



