148 BOTANY OF MICHIGAN 



PORTULACACEAE. Purslane Family 



Claytonia caroliniana Michx. Carolina spring beauty. Beech-maple- 

 birch woods throughout. Common. 



Portulaca oleracea L. Common purslane. A weed in gardens but 

 apparent^ not abundant. 



NYMPHAEACEAE. Water Lily Family 



Ny?nphaea advena Ait. Yellow pond lily. In ponds, small lakes, and 

 slow streams throughout. Common. 



Nymphaea advena variegata (Engelm) Fernald. Variegated yellow 

 pond lily. Noticed near the lower falls of the Tahquamenon River above 

 Emerson. 



Castalia tuber osa (Paine) Green. Tuberous white water lily. In open 

 ponds and small lakes throughout. Frequent. 



Brasenia schreberi Gmel. Water shield. In ponds, small lakes, and 

 slow streams. Plentiful. 



RANUNCULACEAE Crowfoot Family 



Ranunculus purshii Richards. Pursh's buttercup. Abundant along 

 a slow stream in tamarack-black spruce swamp near Vermilion. Not 

 noticed elsewhere. 



Ranunculus abortivus L. Small-flowered crowfoot. In beech-maple- 

 birch woods and other damp shaded places throughout. Frequent. 



Ranunculus recurvatus Poir. Hooked crowfoot. Beech-maple-birch 

 woods throughout. Frequent. 



Ranunculus septentrionalis Poir. Swamp buttercup. Moist open or 

 shaded places throughout. Frequent. 



Ranunculus pennsylvanicus L.f. Bristly crowfoot. Wet open places. 

 Apparently rare. 



Ranunculus acris L. Tall crowfoot. Established throughout, appear- 

 ing like a native plant, but nowhere abundant. 



Thalictrum dasycarpum Fisch. and Lall. Purplish meadow rue. Rich 

 ground on borders of woods, along streams and in thickets. Frequent 

 throughout. 



Hepatica acutiloba DC. Sharp-lobed liver leaf. Hardwoods. Fre- 

 quent. 



Anemone canadensis L. Canada anemone. Damp open ground 

 throughout. Frequent. 



Clematis virginiana L. Virginia virgin's bower. Along small streams. 

 Frequent throughout. 



Caltha palustris L. Marsh marigold. Wet open shaded ground 

 throughout. Frequent. 



