93 
LAURACES. 
(LAUREL FaMILy.) 
Sassafras officinale, Nees. (SAssaFRAs.) 
Frequent in most towns. Old and large trees are becoming rare. 
indera Benzoin, Meisner. (SPIcE-BUSH; BENJAMIN-BUSH. ) 
Moist woods. Frequent. 
THYMELEACES., 
(MEZEREUM FaMILy.) 
Daphne Mezereum, L. 
Frequently cultivated, and found escaped at Ipswich, in 1877, by 
Dr. Chas. Palmer; and, at Salem, 1879 (Harry H. Patch). 
SANTALACEZ., 
(SANDALWOOD FaMILy. ) 
Comandra umbellata, Nutt. (ComMaNnpDRA.) 
Frequent in rather open places. 
CERATOPHYLLACES. 
(HORNWORT FaMILyY.) 
Ceratophyllum demersum, L. 
Ponds and streams. Frequent. The only specimens found in fruit 
have been collected in Pleasant pond, Wenham. 
CALLITRICHACE. 
(WaTER-STARWORTS.) 
Callitriche verna, L. 
Ponds and streams. Very common. 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, 
Pursh, and C. autumnalis, Z., have been reported as growing in the 
county, the former in Lynn by Tracy, the latter in Groveland by 
Russell, 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. 
