MARYLAND WEATHER SERVICE 413 



Arisaema triphyllum (L.) Torr. Jack-in-the-pulpit. 



Throughout the state; in moist forests; common. 



Arisaema dracontium (L.) Schott. Green Dragon. 



Midland and Mountain Zones; in moist forests and flood plains; rare. 

 Harford County, near Glenville (1571). 



Peltandra virginica (L.) Kunth. 



Coastal Zone; in fresh marshes and about the edges of ponds; common. 



Spathyema foetida (L.) Raf. Skunk Cabbage. 



Throughout the state; in moist forests and open wet situations; common. 



Orontium aquaticum L. Golden Club. 



Common in the Coastal Zone, rare in the Midland and Mountain Zones; 



most abundant in fresh marshes along the upper waters, of tidal 



streams; infrequent in swamps. 

 Anne Arundel County, Hills Bridge (1544) ; Garrett County, near Finzel, 



altitude 2700 ft. (George M. Perdew). 



Acorus calamus L. Sweet Flag. 



Common in the Coastal Zone, infrequent in the Midland Zone; in fresh 



marshes and about the edges of ponds. 

 Anne Arundel County, Hills Bridge (1546). 



LEMNACEAE. 



Spirodela polyrhiza (L.) Schleid. Duckweed. 



Throughout the state; in ponds and quiet waters; common. 



Lemna minor L. Duckweed. 



Throughout the state; in ponds and slow streams; common. 



XYRIDACEAE. 



Xyris flexuosa Muhl. 



Coastal and Midland Zones; in moist forests and open situations; 



infrequent. 

 Baltimore County, Towson (Robert K. Miller). 



Xyris communis Kunth. 



Throughout the state, being common in the Coastal Zone, infrequent in 

 the Midland and Mountain Zones; in moist sandy forests and open 

 situations. 

 Worcester County, Snow Hill (1047). 



