19314] Hill,— Notes on Flora of Penobscot Bay Region 189 
exsertum Small; but that species, which abounds on some of the salt 
marshes of Nova Scotia and New Brunswick, is a tall erect plant with 
brown many-nerved ochreae, and with the narrower shorter sepals 
alternately long and short, the outer or longer ones comparatively 
firm and green. 
Gray HERBARIUM. 
NOTES ON THE FLORA OF THE PENOBSCOT BAY 
REGION, MAINE. 
ALBERT F. HILL. 
TuE following plants collected for the most part during the summer 
of 1913 at various places about Penobscot Bay seem worthy of note 
chiefly as regards their distribution. Extensions of ranges are based 
on the distribution of the plants as shown by the material in the 
Gray Herbarium and the herbarium of the New England Botanical 
Club. 
JUNIPERUS HORIZONTALIS Moench. Additional stations to those 
cited for this region by Norton in Ruopora for August, 1913, are Isle 
au Haut and Swans Island where the plant is very common, forming 
large colonies on exposed granite sea cliffs. 
Pinus RIGIDA Mill. The common Pitch Pine of southern New 
England occurs at almost its northern limit in this region. In addi- 
tion to several stations on Mount Desert it is common on the sterile 
slopes of Mt. Champlain at Isle au Haut and at several localities on 
the mainland at Brooklin. 
AGROSTIS ALBA L., var. ARISTATA Gray. This rather uncommon 
variety was collected on the shady bank of a stream at Brooklin. 
Only four other Maine stations are represented in the above herbaria. 
AMMOPHILA ARENARIA (L.) Link. Owing to the rocky nature of the 
coast and the consequent scarcity of sand dunes this plant, so common 
to the south and in the Maritime Provinces, has hitherto been unre- 
ported from the region east of Knox County in Maine. Only one 
small station was found on the southern side of Swans Island. 
ELiYMus viRGINICUS L., var. HIRSUTIGLUMIS (Scribn.) Hitchc, 
