76 NEW YORK STATE MUSEUM 



Carex festucacea Willd. 

 C. straminea var. b r e v i o r Dewey 



Fescue sedge 

 In a dry thicket on a hilltop near Apalachin. Rare. June. 



ARACEAE 



Arisaema triphyllum (L.) Torr. 

 Indian turnip. J ack-in-t he-pulpit 

 Rich moist woodlands and ravines. Common. The corm, when 

 fresh, is very acrid. June. 



Arisaema dracontium (L.) Schott 

 Green dragon 

 Shaded alluvial soil along the river. Frequent. June. 



Calla palustris L. 

 Water arum. Wild calla 

 Swamps. Common. Generally found growing in water. May- 

 June. Spathyema foetida (L.) Raf. 



Symplocarpus foetidus Nutt. 

 Skunk cal)J)age 

 Alluvial soil along the river and its branches. Common. 



March-April. 



Acorus calamus L. 



Sweet flag 



Wet places, specially near dwellings. Frequent. June. 



LEMNACEAE 



Spirodela polyrhiza (L.) Schleid. 

 Great duckweed 

 Stagnant pools and water holes. Common. Summer. 



Lemna minor L. 

 Small duckioeed 

 With the last but less common. Summer. 



PONTEDERIACEAE 



Heteranthera dubia (Jacq.) MacM. 

 H. g r a m i n e a Vahl 

 Water star grass 

 In shallow water along the river. Common. August. 



