348 The Scottish Naturalist. 



flora of the loch is entirely lowland— Germanic, perhaps I ought 

 to say. Though situated farther north than Cluny Loch in Perth- 

 shire, it lies considerably farther from the Silurian of the High- 

 lands, and consequently does not partake of the sub-alpine char- 

 acter of that Perthshire loch ; and you will look in vain for such 

 plants as Siibularia aquatica, Lobelia Dortmatina^ and Isoetes 

 lacHstris. There are three boats upon the loch — the owners of 

 which, on being made acquainted with my purpose, kindly placed 

 them at my disposal. 



At the head of the loch there are several large pools — old 

 marl-pits, I believe them to be — around and between which 

 Myosotis palustris and Raniinctdiis lingua grow in great beauty 

 and profusion. Associated with these, and elsewhere about the 

 loch, is found the deadly Cicuta virosa, which occasionally — as 

 it did in Don's day — proves fatal to cattle feeding on the margin 

 of the loch. The vegetation in these " pots," as they are called, 

 is extremely rich. 



In these pools, or in and about the loch, I got the following 

 plants. I dare not call the list exhaustive, but I have endeav- 

 oured to make it as complete as possible : — 



Fotamogeton nataiis. — Abun dan t. 



P. zostercefolius and P. obtusifolius. — Plentiful in the ''pots," less 

 so in the loch. 



P. cojupi^essus and P. pi-celongus. — Here and there, but not 

 abundant. Specimens of the latter, growing abundantly in one 

 of the " pots," were remarkable for their much-abbreviated, regu- 

 larly zigzagged internodes. 



P. heterophyllus. — On the south side. 



P. lucens. — Common. Its rarer and more striking form; P. 

 acujni?iatus, also occurs ; but fruiting specimens were scarce. In 

 some cases I found the leaf reduced to the midrib. 



P. pei'foliatus and P. crispus. — Common. 



P. piisillus. — Abundant on the north side near the wood. Last 

 season I gathered it with stems 9 or 10 feet long. 



P. pectinatus. — In two or three places on the south side. 



P. poly gonif alius. — In a ditch running into the loch near 

 Clocksbriggs House. » 



P. n/fescens. — Abundant in the burn between the lochs. ^ 



Zanichellia palustris, sub. sp. brachystcmon. — Not so abundant 

 this season as last, when I found it littering the shore after a 



1 Specimens of Polamogdon nifcns, said to have been gathered in Rcscobie 

 Loch, are in Edinburgh University Herbarium. — Ed, Sc. Nat. 



