II© CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



The corm or tuber is intensely acrid, but this property is 

 lost upon being heated, leaving lo to i8% of starch. The 

 corm is medicinal. 



Arisaema Dracontium (L.) Schott (classical name for some 



species of Arum). 

 Green J)ragon. Dragon Root. 



Low grounds near streams and rivers. Rare in the eastern 

 part of the state, becoming occasional westward. May -^June ; 

 fruit Aug. — Sept. 



PELTANDRA Raf. Arrow Arum. 



Peltandra virginica (L.) Kunth. 

 Peltandra undulata Raf. 

 Arrow Arum. 



Occasional or frequent. Shallow water of ponds and 

 streams and sometimes in bogs. June — July; fruit Sept. — 

 Oct. 



CALLA L. Water Arum. 



Calla palustris L. (of marshes). 

 Wild or Marsh Calla. 



Occasional or local. Cold bogs and shaded swamps, some- 

 times forming extensive colonies. May — June ; fruit July — 

 Sept. 



The rootstocks are edible after an acrid principle they con- 

 tain has been dissipated by cooking, and they are said to be 

 sometimes used for food in parts of Europe. The Calla Lily 

 of cultivation is not a true Calla, but is a species of the genus 

 Richardia. 



SYMPLOCARPUS Salisb. Skunk Cabbage. 



Symplocarpus foetidus (L.) Nutt. (ill-smelling). 

 Spathyema foetida Raf. 

 Skunk Cabbage. 



Common. Wet ground. March — April ; fruit July — 

 Sept., persisting into the winter. 



The rootstocks are reputed to have medicinal value. 



