SHORE OF LAKE HURON 47 



SAXIFRAGACEAE. Saxifrage Family 



Tiarella cordifolia L. False miterwort. In rich shaded ground from 

 Bay County to St. Ignace, Mackinac County. Frequent. 



Mitella diphylla L. Two-leaved bishop's cap. In rich damp woods 

 throughout. Frequent. 



Mitella nuda L. Naked bishop's cap. In damp shaded ground. Plen- 

 tiful throughout. 



Chrysospleniwn americanum Schwein. Golden saxifrage. Wet, usually 

 shaded places. Frequent throughout. 



Parnassia parviflora DC. Small-flowered grass-of-parnassus. In 

 marshy open ground on Mackinac Island. F. W. Hunnewell 2nd. 

 Apparently infrequent. 



Parnassia caroliniana Michx. Carolina grass-of-parnassus. Com- 

 mon throughout in low marshy open ground. 



Ribes cynosbati L. Prickly gooseberry. In damp open or shaded 

 ground. Frequent from Bay County to St. Ignace, Mackinac County. 



Ribes gracile Michx. Missouri gooseberry. In rich shaded ground 

 fi'om Bay County to Mackinaw City, Cheboygan County. Frequent. 



Ribes oxyacanthoides L. Smooth gooseberry. Damp open or partially 

 shaded ground. Frequent throughout. 



Ribes oxyacanthoides calcicola Fernald. Low wild gooseberry. In 

 shaded ground on Mackinac Island. F. W. Hunnewell 2nd. Common. 



Ribes floridum L'Her. Wild black currant. Rich shaded ground. 

 Common throughout. 



Ribes lacustre (Pers.) Poir. Swamp black currant. Common in damp 

 shaded ground from Alpena to St. Ignace and on Mackinac Island. 



Ribes prostratum L'Her. Skunk currant. In damp open or shaded 

 ground from Alpena to St. Ignace and on Mackinac Island. Plentiful. 



Ribes triste Pall. Swamp red currant. Rich damp woods throughout. 

 Plentiful. 



Ribes triste albinervium (Michx.) Fernald. Glabrous swamp red cur- 

 rant. Rich woods on Bois Blanc Island, Mackinac County. Plentiful. 



Ribes aurewu Pursh. Missouri currant. Cultivated but apparently 

 not escaping. 



HAMAMELIDACEAE. Witch-hazel Family 



Hamamelis virginiana L. Witch-hazel. Dry open ground or often 

 in slight shade of other trees. Frequent throughout. Common near 

 Lewiston, Montmorency County. 



ROSACEAE. Rose Family 



Physocarpus opidifolius (L.) Maxim. Nine-bark. Low open ground 

 or along banks of streams. Frequent throughout. 



