Tennessee Flora. 89 



A. hirsuta (L.) Scop. Cumberland Mts. May-September. 



A. laevigata (Miihl.) Poir. On limestone cliffs along Cum- 

 berland River. April, May. 



A, Canadensis L. Sickle pod. Rocky woodlands. O. S. 

 April, Mav. 



ERYSIMUM L. 



Erysimum cheiranthoides L. Treakle mustard. Knoxville. 

 A. Ruth. June-August. 



KONIGA Adans. (Alyssum L.) 



Koniga maritima (L.) R. Br. Alyssum maritimum Lam.. 

 Sweet alyssum. Escaped from gardens along fences. Nash- 

 ville. Summer. 



BERTEROA DC. (Alyssum L.) 

 Berteroa incana (L.) DC. Alyssum incanum L. Intro- 

 duced and first observed in my garden in Nashville in June,. 

 1897. June. 



HESPERIS L. 



Hesperis matronalis L. Dame's gilliflower. Introduced 

 along a garden fence on Belmont Park, Nashville. May-June. 



CAPPARIDACE^ Lindl. 



CLEOME L. 



Cleome spinosa DC. C. pungens Willd. Spider flower. In 

 waste places, river banks. O. S. Adventive from tropical 

 America. Summer. 



POLANISIA Raf. 



Polanisia graveolens Raf. Along the track of the Nashville, 

 Chattanooga and St. Louis Railway, in Dickson and Benton 

 Counties. Foot of Fort Negley, South Nashville. Summer. 



Capparis spinosa L. The caper ought to be introduced in 

 cultivation, as it grows well under slight protection. Cult. 



SARACENIACE^ La Pyl. 



Saracenia purpurea L. Pitcher plant. Low grounds along 

 Mississippi, Tennessee, and Duck Rivers. April. 



PODOSTEMACE^ Lindl. 



Podostemon abrotanoides Nutt. In all mountain streams 

 of the Alleghany Mts. Submerged and on rocks. July-Sep- 

 tember. 



P. ceratophyllum Michx. River weed. Streams in the 

 Cumberland Mts. July-September. 



