88 ■ BULLETIN OF THE LABORATORIES 



767. L. campest'ris D C. 



Dry, wooded banks, generally in rocky soil, common. April 22, 

 1889; May 2, 1891. 



XCIV. TYPHACEAE. 



371. Typha Tourn. 



768. T. latifolia L. Common Cat-tail. 



Swamps, common. July 8, '1888; July 18, 1889; July 2, 1891. 



372. Sparganium Tourn. 



769. S. eurycarpum Engelm. 



Swamps, common. June 22, 1889; July 19, 1891. 



770. ,,S. simplex Huds. Var. androcladum. Engelm. 

 Swamps, less common than last. June 29, 1890. 



XCV. ARACEAE. 



373. Arisaema Martius. 



771. A. triphyllum Torr. Indian Turnip. 



Woods, common. May 16, 1887.; May 7, 1889; May 17, 1890; 

 April 30, 1891. 



772. A. Dracontium Schott Green Dragoa. Dragon-root. 

 Moist soil, rare. June 11, 1888; June 19, 1890. 



374. Peltandra Raf. 



. 773. P. undulata Raf. 

 Growing in shallow water in the Old Reservoir on the edgeis of 

 the Cranberry Marsh. June 20, 1890. 



375, Symplocarpus Salisb. 



774. S. foetidus Salisb. 



Swamps, common. May 16, 1887; April 7, 1888; April 8, 

 1889; February 26, 1890; March 20, 1891. 



376. Acorus L. 



775. A. Calamus L. Sweet Flag. 



This formerly occurred iJi swamps in the central part of county. 



