The Scottish Naturalist. 29 



Aug. 14th. — White Loch, near Blairgowrie. 

 P. heterophyllns, Schreb. 



In two places there occurs a plant with leaves like heterophyllns 

 (but without the floating leaves), of a pale green colour and un- 

 dulated : peduncle and spike as in nitens. Mr. Bennett has no 

 doubt that it is his var. pseudo-niteiis. Also stoloniferous. In 

 this connection I may also remark that in September last I 

 gathered P. perfoliatus and P. heterophyllns with stolons. 



I cannot conclude this paper without recording my great 

 indebtedness to Mr. A. Bennett of Croydon for the infinite pains 

 he has taken in identifying these puzzling plants for me. 

 Rattray, 25th November, 1880. 



P.S. — I have just heard from Mr. Bennett that in a parcel of 

 characece which I sent him lately, he has found Nitella flexilis, 

 Ag. var. crassior, A, Braun, hitherto recorded from Sweden and 

 N. America only. It is somewhat singular that this Nitella and 

 my new Potamogeton were gathered on the same ground in Marlee 

 Loch this year as Naias plexitis last year. 



MYCOLOGIA SCOTICA. 



By REV. J. STEVENSON. 

 {Continued from Vol. VI., page 221.) 



The numbering of Species is continued -with 2256, No. 32 being deleted. 



* Agaricus aurantius Schaeff. My col. Scot., p. 7. The 

 plant from Forres figured in Illustrations of British Fungi, PI. 33, 

 under this name, is a form of A. robustus, A. & S. Dr. Cooke 

 records this correction, with which Dr. Keith agrees. JVo. 32 

 My col Scot., is therefore to be deleted. 



2256. Agaricus (Clitocybe) Trogli* Fr. Hym. Eur. p. 85. 

 C. Illust. PI. 102. 



Pileus fleshy, compact, convex then expanded, obtuse, 

 smooth, becoming cinereous-white, opaque; stem solid, firm, 

 short, villous at the thickened base, and, as well as the 

 somewhat decurrent crowded gills, white. Very fragrant. 



Grassy avenue in wood. Sep. 

 East. — — Tay — — — 



West. — — — — 



Glamis. J. S. 



England. Europe. 



