So Tin; AMERICAN midland xati'kai.ht 



( arex stricla Lam. Tussock Sedge. 



Moist banks. Common. Apr. 10. 

 ( arex Davisii Schwcin. & Torr. Davis' vSedge. 



Blue Rapids. Once collected along edge of woods. 

 ( '<(rc.v oligocarpd Schk. 



Manhattan. Dry wooded hanks. 

 < arex teianica Schk. 



Prairies. Common. Apr. [5 (17). 

 ( 'arex laxi flora Lam. 



Woods and wooded ravines. Common. Apr. 5. 

 I 'arex pennsylvanica Lam. 



Prairies. Common. Mar. 30 (Apr. 2.). 

 Car ex varia Muhl. 



Manhattan. Wooded banks. Apr. 10 (8). 

 Carex vulpinoidea Michx. Fox Sedge. 



Low ground. Common. May 15. 

 ( 'arex sparganoides Muhl. Bur-reed Sedge. 



Meadows and edge of woods. Common. May 5 (6). 

 ( arex jestucacea Willd. Fescue Sedge. 



Prairies and meadows. Common. May 10. 



Araceae. Arum Family. 



Arisaema Dracontium (L.) Schott. Green Dragon. 



Woods. Common. May 30. Called Jack-in-the-Pulpit, 



but this name seems reserved for A. triphyllnm. 



Lemnaceae. Duckweed Family. 



Spirodela polyrhiza (L.) Sehleid. Greater Duckweed. 



Manhattan. On water, often among the rushes. Common. 

 Lemna perpusilla Torr. 



Manhattan. Often with the preceeding. 



Commelinaceae. Spiderwort Family. 



c 'ommelina virginica L. Day Flower. 



Fields and waste places. Common. June 30 (July 2). 

 Tradescantia bracieata Small. Spiderwort. 



Meadows and banks. Common. May 20 (19). 

 Tradescantia reflexa Raf. 



Especially in sandy soil. Very common at Manhattan; 

 not common in the area covered ut Blue Rapids. May 20. 



