50 ON THE FLORA OF INNISHOWEN, CO. DONEGAL. 
and intersected by deep occ dykes leading into main drains 
whose fall is quite insufficient to do more than partially carry off 
the surplus water. The water of two small, but sometimes much 
ooded, streams, empties itself into this estuary, the one from low 
lands southwar s towards Derry, the other from a valley running 
are chiefly : in the drains Pot aa pectinatus, P. pusillus, Ruppia 
maritima, Myriophyllum alterniflorum, and Ranunculus heterophyllus ; 
and more sparingly, Utricularia vulgaris, Myriophyllum spicatum, 
and Zannichellia palustris. On the sides of the dit ches and else- 
would confine the range for a wide area of some of the above to 
the same grounds as the Havitie. 
ere is a similarly reclaimed estuary, upon a smaller scale, 
a couple of miles south of Inch Island along the same shore of 
Lough Swilly, called Blanket Nook, which I s earched for Bartsia 
without success, and I am convinced the plant is confined to the 
area pape tg 
I may add that I have made fruitless oe of all persons in 
the neighbourho od el seemed likely to be able to give any 
a recently submerged flat? Bartsia viscosa belongs to a grou 
which probably Cece! at a wiped ical period north of its 
present limit along the European co 
In the foregoing remarks I pee. ‘expressed my belief that 
Bartsia is native in Donegal; and I am able to show that, 
though so very local in Ireland, it is one which we should 
not be surprised to meet in Donegal. It is one of those south 
and south-west European species which extend up the west coast 
of Great Britain, failing in numbers as oe travel norte 
until a few only have found a hom otland. These ar 
classed together by Watson in ie Atlantic or Western rns. and 
the group is well represented in most of the maritime counties 
a 
