CATALOG OF PLANTS. 99 



490. Prunus serotina Ehrh. Wild black cherry. — Frequent on rich 



ii'rouud with other trees. 



491. Prunus virginiana L. Choke cherry. — Common on flat sandy 



firound and on sand dunes. Fringing the lake shore in 

 al)undance on the north side of Sand Point. 



492. Prunus pennsylvanica L. f. Wild red cherry. — Frecfuent in 



. open dry woods throughout the sand region and on the 

 islands. 



493. Prunus pumila L. Sand cherry. — Frequent throughout the 



sand region on du«es and flat sandy ground. "Abundant 

 on the dunes west of Port Crescent." Davis. 



494. Prunus cerasus L. Common sour cherry. — Noticed as a frequent 



escape in the ^•illages. 



495. Prunus americana Marsh. Wild plum. — Apparently rare in the 



immediate vicinity of sand dunes. Two specimens noticed 

 on the west side of Stony Island. Rare on the islands. 

 More frequent east of Port Austin to and below Grinrlstone 

 City as far as White Rock. "Hume township along 

 streams." Davis. 



496. Lupinus perennis L. Wild lupine. — Al)undant on south side 



of Sand Point, on flat sandy ground. Apparently rare in 

 other places. 



497. Trifolium pratense L. Red clover. — Occasional throughout the 



sand region. A1)undant in cultivation in adjacent fields. 



498. Trifolium repens L. White clover. — Common in streets and 



waste places of villages, abundant in adjacent pastures and 

 fields. 



499. Trifolium hybridum L. Alsike clover. — Frequent in streets and 



waste places of villages, abundant under culti^'ation in 

 adjacent fields. 



500. Melilotus ofl[icinalis (L.) Lam. Yellow sweet clover. — Occasional 



in villages, around country dwellings and fishery buildings. 



501. Melilotus alba Desr. White sweet clover. — Frequent in streets 



and waste places of villages. Abundant along the road 

 below Grindstone City. 



502. Medicago sativa L. Alfalfa. Lucerne.— Occasional near Rush 



Lake. Port Austin and Sebewaing. 



503. Medicago lupulina L. Black medic. — Common in villages and 



adjacent fields. 



504. Robinia pseudo-acacia L. Common locust. — Cultivated as an 



ornamental tree ami escaping in the villages. 



505. Astragalus canadensis L. Carolina milk vetch. — Along the 



bank of a creek near Harbor Beach. 



