REPORT FOR 1895. 
497 
“Sparganio natanti e longinquo simillimus. Folia natantia sjepe desunt, 
tumque nemo sane divinaret, tarn propinquam esse P. natanti, ut 
dubium sit an ex illo tuto separari possit.” p 242 (1839).” — Ar. Bennett. 
“This resembles the Scandinavian plant in the submerged leaves, but 
differs in the branched stem and in the shape and areolation of the 
floating leaves ; it might be placed under P. fluitans as a variety, but 
I would prefer to name it P. Kirkii^ Syme. Possibly it may be 
polygo 7 iifolius x natans^ — A. Fryer. 
Potamogeton undulatus, Wolf. = P. perfoliatus x crispus. Sixmile 
River, above Templepatrick, Co. Antrim, loth Aug., 1894. Grows 
in dense masses in the deeper parts of the river, with abundant fruit- 
ing spikes, but no fertile drupes. In shallows of a tributary stream it 
creeps amongst stones, but in that situation produces only leaves. — 
S. A. Stewart. — “ I have no doubt that Mr. Fryer would so name 
these.” — Ar. Bennett. “ There is a considerable degree of uncertainty 
as to the precise form which Wolfgang described as P. undulatus. 
On such evidence as I have been able to obtain it seems probable 
that original specimens gathered and named by him are in part P. 
pmlongus X crispus., and in part P. crispus x perfoliatus. M. J. 
Baagoe has examined the typical specimen in the St. Petersburgh 
herbarium, and assures me that this is crispus x prcelongus ; a specimen 
in my herbarium, gathered by Wolfgang, seems to me to be the same 
as the Stirling plant collected by Messrs. Bidston and Stirling, which 
is certainly crispus x perfoliatus. Mr. Baagoe inclines to think that 
none of our British specimens equal Wolfgang’s plant, and has sent 
me drawings of stem sections of the type and of my var. Cooperi, 
and of the supposed parents of the two forms, which strongly support 
his views. I think Mr. Stewart’s plant' is equal to my var. Cooperi., 
and perhaps had better be named Potajnogeton x Cooperi = crispus x 
perfoliatus i' — A. Fryer. 
P. Friesii, Rupr. Lord Longford’s boat-harbour. Loch Derravaragh, 
Co. Westmeath, 24th July, 1895. — H. C. Lf:vinge. Loch Derravaragh, 
Co. ^Vestmeath, 24th July, 1895. — W. R. Linton. “Deep water 
state, correct. These are fair examples of Ruprecht’s plant, except 
that his specimens were gathered in shallower water.” — Ar. Bennett. 
P. Friesii., Rupr. Derby, June, 1895. I think a County record; 
at all events a new locality. — R. Linton. “ Probably correct, but 
poor material.” — Ar. Bennett. 
P. trichoides, Cham., var. Trimmeri., Caspary. Bradmere Pool, 
Drewsteignton, S. Devon, 28th July, 1895. (Conf. ‘Journ. Bot.,’ 
1894, p. 23.) — S. T. Dunn. “Not showing the form of the fruit at 
all well. The original gathering is undoubtedly P. trichoides ; this is 
perhaps gathered too early; it fruits up to November in Norfolk.” — 
Ar. Bennett. 
Ruppia f'ostellata, Koch. Pool at head of sands ot Northtown, 
S. Harris, Outer Hebrides, 4th October, 1892. Leg. AV. S. Duncan, 
Com. Ar. Bennett. New County record. 
