MIDDLESEX FLOKA. 



NYMPH^EACE^E. WATER-LILY FAMILY. 



BRASENIA, Schreb. 



B. peltata, Pursh. WATER-SHIELD. 

 Common. July-Aug. 



NELUMBIUM, Juss. 



N. LUTEUM, Willd. YELLOW NELUMBO. WATER CHINQUEPIN. 

 Concord River, Concord, (Walter Deane; specimen in herb. of). 

 July-Aug. Introduced from the South. 



NYMPH^EA, Tourn. 



N. odorata, Ait. WHITE POND-LILY. 



Common. June-Aug. 

 *N. odorata, Ait. var. minor, Sims. 



Concord (H. S. Kichardson). 



NUPHAR, Smith. 



N. advena, Ait. YELLOW POND-LILY. COW-LILY. 



Common. May- Aug. 

 N. Kalmianum, Ait. (!N". luteum, Smith, var. pumilum; Man.) 



SMALLER COW-LILY. 



Walden Pond, Concord (J. L. Russell, Hovey's Mag. Vol. XXI) ; 



Sudbury (Bigelow's PI. Bost.) ; Concord River, Tewksbury (C. W. 



Jenks). Not common. Aug.-Sept. 



SARRACENIACE^E, PITCHER-PLANT FAMILY. 



SARRACENIA, Tourn. 



S. purpurea, L. PITCHER-PLANT. SIDE-SADDLE FLOWER. 

 Rather common. May-June. 



PAPAVERACEy^E, POPPY FAMILY. 



ARGEMONE, L. 



A. Mexicana, L. MEXICAN POPPY. 



Cambridge ; occasional in waste-heaps, with a white variety (Walter 

 Deane ; specimen in herb, of.) July-Sept. Int. from tropical 

 America. 



