210 Rhodora [NOVEMBER 
use for agriculture, grazing, or building purposes quite subversive of 
the gradual biological changes here traced. However, the ecological 
aspects of the vegetation on considerable areas of a more or less similar 
nature are discussed in detail by Prof. W. F. Ganong in his highly 
interesting paper “ The Vegetation of the Bay of Fundy Salt and Diked 
Marshes, an Ecological Study"! to which is appended a careful 
bibliography of the general subject. 
FLORA or THE MARSH. 
Ceratodon purpureus Brid. Abundant in open spots near the center 
of the marsh. 
Polytrichum commune L. Abundant along the river border in 
muddy, wet soil, close to the water. 
Pottia truncata Br. & Sch. Abundant along the river border in 
muddy, wet soil, close to the water. 
Typha latifolia L. The Cat-tail occurs abundantly and fruits freely. 
It is scattered along the river border a few feet from the shore, espe- 
cially at the north end, and it is common in ditches on the west side. 
Potamogeton epihydrus Raf. A patch several feet across was on the 
river border on July 17, 1912. 
Potamogeton bupleuroides Fernald. Plants with leaves only were 
found in the river near the shore in the cove at the south end on August 
16, 1912, and September 12, 1913. 
Potamogeton crispus L. Very abundant along the shore and in 
ditches. A resumé of my notes made from many visits during the 
season may be of interest. According to my observations the species 
behaves in the following manner. In early May P. crispus appears in 
great abundance. An examination of the plants shows that they are 
the old last year’s stems with fresh young shoots starting from them. 
I wrote on May 1, 1913, “Old plants of last year very abundant, in 
dense masses, along the river border, sending out fresh shoots." On 
May 20, 1913, I made another record, “Is in full flower, the spikes 
projecting above the water by thousands. Masses are along the shore 
and in the mouths of the larger creeks, the fresh stigmas and anthers 
presenting a beautiful appearance under the glass. I pulled up 
several plants and it seems that they must be the very ones that were 
1 Bot. Gaz. xxxvi. 161-186, 280—302, 349-367, 429—455 (1903). 
