BOTANY. 165 



Sedum Ternatum ( Haw.) Michx. 



Generally distributed over the state. 



LXXII. Order CAPPARIDACE^E. Caper Family. 



357. POLANISIA Raf. 



PoivANisiA graveoeens Raf. ( P. dodecandra Mx.) 



Distributed over the state; West Sister Island (Lake Erie) J. A. Sanford. 



EXXIII. Order CRUCIFER^E. Mustard Family. 



358. RORIPPA Scop. ( Nasturtium R. Br.) Water Cress. 



Rorippa Americana (Gray) Britt. [Nasturtium lacustre Gray.) Lake Cress. 



Franklin Co., W. S. Sullivant; Lorain Co., A. A. Wright (Cat.) ; Licking Go., H. 

 L. Jones (Cat.); Cincinnati, Jos. F. James (Cat.); Madison Co., Mrs. K. D t 

 Sharpe. 



Rorippa armoracia (L) Rusby. [Nasturtium armoracia Fries.) Horse raddish 

 Escaped from gardens into roadside and waste places. 



Rorippa hispida (Desv.) Britt. ( Nasturtium palustre hispida F. & M.) 

 Painesville, Wm. C. Werner ; Monroe Co., H. Herzer. 



Rorippa nasturtium (L.) Britt. [Nasturtium officinale R. Br.) True Water 

 Cress. 



Common near springs and in clear running water throughout the state. 



Rorippa paeustre ( L.) Britt. ( Nasturtium palustre L.) Marsh Cress. 

 Frequent. 



Rorippa sessieifeora ( Nutt.) Britt. ( Nasturtium sessilijlorum. Nutt.) 

 Miami Valley, A. P. Morgan (Flora). 



Rorippa syevestris ( L.) Britt. ( Nasturtium sylvestre R. Br.) 

 Painesville, O. Hacker. 



359. BARBAREA R. Br. WINTER CRESS. 



Barbarea vulgaris R. Br. Common Winter Cress. Yellow Rocket. 

 Over the whole state, most abundant in heavy clay soils. 



360. ARABIS L. Rock Cress. 



Arabis canadensis L. Sickle-pod. 



Over the whole state, probably not common anywhere. 



