CATALOGUE OF PLANTS. 47 



Order 89. TYPHACEJE. Cat-tail Family. 



Typha, Tourn. 



T. latifolia, L. (Common Cat-tail.) 

 Sparganium, Tourn. Bur-reed. 



S. simplex, Huds. Borders of ])onds and streams, 

 var. androcladum, Engelm. The largest form ; common. 

 var. fluitans, Engelm. Not uncommon in ponds and streams. 

 var. angustifolium, Engelm. In ponds. 

 S. minimum, Fries. Pond holes, Norwich, Vt., Jesup ; probably not rare. 



Order 90. ARACE.^. Arum Family. 

 Arisaema, Martius. 



A. triphyllum, Torr. (Indian Turnip.) Common in rich woods. 

 A. Dracontium, Schott. (Dragon Arum.) Charlestown, Dr. Graves ; 

 rare. 

 Peltandra, Raf. Arrow Arum. 



P. undulata, Raf. (P. Virginica, Kunth.) Mud Pond, Canaan, Jesup ; 

 Enfield. Ahvell. Perhaps not very common. 

 Calla, L. Water Arum. 



C. palustris, L. Bogs. Claremont and Newport, Dr. Barrows; New 

 London, N. H., Carter ; Hartford, Springfield, and Sherburne, Vt. ; not 

 very common. 



Symplocarpus, Salisb. Skunk Cabbage. 



S. foetidus, Salisb. Wet places. Norwich and Thetford, Vt. ; etc. Not 

 as common as it is farther south. 

 Acorus, L. Sweet Flag. Calamus. 



A. Calamus, L. Swamps ; everywhere. 



Order 91. LEMNACE.^. Duckweed Family. 



Ijemna, L. Duckweed. 



L. minor, L. Floating in still water ; not infrequent in ponds and ditches. 

 Hanover and Enfield, N. H. ; Norw^ich, Vt. ; etc. 



Spirodela, Schleid. Duckweed. 



S. polyrrhiza, Schleid. (Lemna polyrrhiza, L.) In the same localities as the 

 preceding, and like it rarely ever found in flower or fruit; propagating by 

 winter buds. This species is less common than the preceding. 



Order 92. ALISMACE^. Water-Plantain Family. 



Alisma, L. Water-Plantain. 



A. Plantago, L. Shallow water ; abundant and variable. 



Sagittaria, L. Arrow-head. 



S. variabilis, Engelm. In wet places ; several varieties. * 



S. graminea, Michx. Lebanon, Hanover, etc. ; not rare near ponds. 



