194 BOTANY OF MICHIGAN 



Radiculd armor acia (L.) Robinson. Horseradish. Noticed as an 

 escape in ditches and wet places, throughout. 



Dentaria diphylla Michx. Crinkle-root. In rich woods near Murphy's 

 Lake. Probably frequent throughout. 



Dentaria laciniata Muhl. Cat-leaved toothwort. In rich woods near 

 Murphy's Lake and Mud Lake. Probably frequent throughout. 



Cardamine bulbosa (Schreb.) BSP. Spring cress. In damp grassy 

 places, especially near the small lakes. Frequent. 



Cardamine douglassii (Torr.) Britton. Purple cress. Noticed in 

 rich woods near Murphy's Lake. Probably frequent throughout. 



Cardamine pennsylvanica Muhl. Pennsylvania bitter cress. No- 

 ticed in a wet open place near Quanicassee. Probably frequent through- 

 out. 



Cardamine pratensis L. Cuckoo flower. Wet low places and low 

 banks of streams. Frequent. 



Arabis lyrata L. Lyre-leaved rock cress. On sandy ridges near the 

 shore of Saginaw Bay, and high hills about Murphy's Lake. 



Arabis glabra (L.) Bernh. Tower mustard. Dry open or partially 

 shaded ground. Frequent. 



Arabis laevigata (Muhl.) Poir. Smooth rock cress. "Sandy ridges 

 and poor soil, Akron and Wisner townships." C. A. Davis. 



SARRACENIACEAE. Pitcher-plant Family 



Sarracenia purpurea L. Pitcher-plant. Abundant in the swamps 

 about Cat Lake and Mud Lake. 



DROSERACEAE. Sundew Family 



Drosera rotundifolia L. Bound-leaved sundew. Swamps and peat- 

 bogs. Frequent. 



CRASSULACEAE. Orpine Family 



Penthorum sedoides L. Ditch stonecrop. Common in wet places, 

 especially along ditches. 



Sedum acre L. Mossy stonecrop. Occasional on sandy ground along 

 roads and about cemeteries. 



Sedum purpureum Tausch. Live-for-ever. Frequent along roads, in 

 cemeteries and about dwellings. 



SAXIFRAGACEAE. Saxifrage Family 



Tiarella cordifolia L. False miterwort. Common in rich woods, 

 especially near Murphy's Lake. 



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

 Murphy's Lake and Cat Lake. Probably common throughout. 



