316 MAGNOLIACEAE 



2. C. tuberosa (Paine) Greene. Lake Champlain, west through 

 the Great Lakes to Mich., south to Pa., Del. and Ark. 



Known definitely only from Pocatquissing Creek and from near 

 Trenton, both in Mercer Co. and from Cape May Co., N. J. 



4. Nelumbo [Tourn.] Adans. 



Flowers pale yellow; native plant. I. N. lutea. 



Flowers pink or white; introduced plant. 2. N. Nelumbo. 



i. N. lutea (Willd.) Pers. In ponds and slow streams: Ont. to 

 Mass., Fla., Minn, and Tex. Rare in our area. 

 Conn. Selden's Cove, Lyme. 

 N. J. Rare in Sussex, Salem, and Bergen counties, in the latter 



county introduced. 

 Pa. Near Philadelphia and along the banks of the Delaware in 

 Delaware Co. 



2. N. Nelumbo (L.) Karst. Known in N. Am. only from a large 

 ponddike swamp at Bordentown, N. J., within 1/8 mile of the 

 Delaware River. Obviously introduced. 



CERATOPHYLLACEAE 

 1. Ceratophyllum L. 

 1. C. demersum L. In ponds and streams: throughout N. Am. 

 except the extreme north. 



Throughout the range except in the pine-barrens. The variety 

 echinatum with large fruit is said to be of similar range; it is known 

 definitely only from Westchester Co., N. Y. 



MAGNOLIACEAE 



Anthers introrse; leaves entire or with 2 basal lobes. 1. Magnolia. 



Anthers extrorse; leaves lobed or truncate. 2. Liriodendron. 



i. Magnolia L. 



Leaves 8-15 cm. long, glaucous beneath. I. M. virginiana. 



Leaves 20-40 cm. long, light green and somewhat pubescent beneath. 2. M. tripetala. 



I. M. virginiana L. In swamps and swampy woods: Mass. to 

 Pa., Fla. and Tex. 

 N. Y. On L. I. south of the moraine in Suffolk Co.; occasional 



on S. I. 

 N. J. Rare and local in Bergen, Essex, Hudson and northern 



Middlesex and Monmouth counties, increasing and common 



southward. 



