Lemna.} LEMNACE. 301 
south side, 1888-1912; abundant in the Bilrook stream 
flowing into Castlelough Bay, Lower Lake, Killarney, 
1901-08: B.W.S. 
First record in 1888: R.W.S., Journ. of Bot. 
This plant no doubt occurs elsewhere in the county, but 
it must be very rare indeed there. As at present known it 
is confined in Kerry to the neighbourhood of Killarney. 
The three stations recorded above are all swift-flowing lime- 
stone springs with courses less than a mile in length ; they 
all lie within an area of three miles square. 
L. minor Linn. Duckweed. 
Districts I. II. III. IV. V. Vi. VIt. VIIi. IX. 
Native. Stagnant pools and ditches. Rather common. 
Ann. June—July. 
First record in 1890: Stewart, Proc. R.I.A. 
ALISMACEZ. 
ALISMA Linn. 
A. Plantago Linn. Water Plantain. 
Districts I. ID. II. IV. V. VI. VII. VII. IX. 
Native. Ditches, ponds, sluggish streams, swamps, &c. 
Rather common. Peren. July—September. 
First record in 1888: B.W.S., Journ. of Bot. 
When growing in deepish water, as in some of the old mine 
holes on Ross Island, Killarney, young plants of this Alisma 
throw up long filiform stalks which expand into small oval 
or spear-headed floating leaves, sometimes barely half an 
inch in length. Very possibly it is this form, or a deep 
water state of the following species, that has been mistaken 
in Kerry for the rare Elisma natans. 
A. ranunculoides Linn. 
Districts I. Tl. I. IV. V. VI. Vil. VII. IX. 
Native. On the margins of lakes and ponds, in marshy 
ground, ditches, about sluggish streams, &c. Rather 
common except in the extreme south where it is rather rare 
and local. Peren. June—July. 
First record in 1884: Hart, Proc. RJ.A. 
A profusely stoloniferous form, producing flowers and 
leaves at the numerous rooting nodes, is rather common on 
the shores of some of the larger Kerry lakes, such as those 
