146 Rhodora [AUGUST 
For several years I have spent a week or more of my summer vaca- 
tion in this interesting place. To insure a complete survey of the 
flora there should be, of course, spring and fall visits as well, but the 
season there is so short that the plants often overlap. Thus I have 
seen Ledum in bloom on July 4, wild roses on Sept. 3, and Cornus 
canadensis in flower and in fruit in the last week of July. "The follow- 
ing lists are therefore reasonably complete. 
For convenience in presentation, and to show the natural plant 
societies of the region, I have selected the eight natural habitats — 
sea beach, salt-marsh, rocky headlands, peat-bogs, barrier beach pond, 
swamps, Canadian forest and cleared upland. The swamps and 
cleared upland are less primitive than the other six groups, and new 
plants seem to be working into these areas from the warmer region 
back of the coast. 
For completeness the fields should be added, but their flora is largely 
of outside origin. Four introduced weeds, however, deserve special 
mention. Matricaria suaveolens is the commonest of dooryard and 
roadside weeds, completely covering the ground in places, and giving 
forth its pineapple-like odor when crushed. Rumex Patientia is the 
early broad-leaved dock and abounds in many parts of the county. 
The prevailing Leontodon is a large plant 4-5 dm. in height and full of 
good-sized heads all through July. "This plant is pubescent and the 
involucres are densely covered with hairs. This is quite different 
from the smooth slender plant which is in bud at the same time, which 
is the type, while this larger plant is L. autumnalis, var. pratensis. 
Another unusual plant, Arrhenatherum elatius, has been introduced in 
grass seed in one place only, but has flourished there for several years. 
SEA BEACH, SAND OR GRAVEL. 
Agropyron repens Arenaria peploides L. 
Ammophila arundinacea var. robusta Fernald 
Elymus arenarius Cakile edentula 
Hierochloe odorata Rosa virginiana 
Spartina Michauxiana Lathyrus maritimus 
Polygonum aviculare, var. vegetum Oenothera muricata 
Rumez pallidus Coelopleurum actaeifolium 
Atriplex patula, var. hastata Convolvulus sepium, var. pubescens 
Suaeda maritima Mertensia maritima 
Galium Aparine 
