93 



LAUEACEJB. 



(Laurel Family.) 



Sassafras ofBcinale, Nees. (Sassafras.) 

 Frequent in most towns. Old and large trees are becoming rare. 



Iiindera Benzoin, Meisner. (Spice-bush ; BK^'JAMIN-BUSH.) 

 Moist woods. Frequent. 



THYMELEACEJS. 



(Mezereum Family.) 



Dapline Mezereum, L. 

 Frequently cultivated, and found escaped at Ipswich, in 1877, by 

 Dr. Chas. Palmer; and, at Salem, 1879 (Harry H. Patch). 



SA]!q"TALACE.ffil. 



(Sandalwood Family.) 



Comandra umbellata, Nutt. (Comandra.) 

 Frequent in rather open places. 



CEKATOPHYI.IiACE.ffi. 



(Hornwort Family.) 



Ceratophyllum demerstim, L. 



Ponds and streams. Frequent. The only specimens found in fruit 

 have been collected in Pleasant pond, Wenham. 



CALLITEICHACE^. 



(Water-Starworts.) 



Callltriche verna, L. 

 Ponds and streams.' Ver^ ^^mmon. Found fruiting while only 

 half an inch high when growing in mud, and also in deep water 

 where it frequently grows more than a foot long. C. heterophylla, 

 Fursh, and C. autumnalis, L., have been reported as growing in the 

 county, the former in Lynn by Tracy, the latter in Groveland by 

 Kussell, but neither are in the county collection of the P. A. S. 

 That there should be confusion regarding these plants is not at all 

 surprising, as the terrestrial and aquatic forms are so unlike ; and 

 it may be that there are two species to be found here. 



