SHORT NOTES 345 



elsewhere in Breconshire. I have found the former in Llyn-y-Cwm 

 Llwch, at the foot of the Brecknock Beacons. This year, on 

 15th July, I found both species cast up at the edge of Llyn-y-Fan 

 Fawr, at the foot of the Brecknockshire Fan. This lake has the 

 reputation of being void of both weeds and fish. But I do not see 

 how the Lwetes and Littorella could have been there — the Isoetes in 

 good condition, though small — cast up on the shore, unless they had 

 come from the lake. The other lake, Llyn-y-Fan Fach, is some 

 miles away for the pedestrian : there are two great cliffs interposed, 

 as the crow flies. The plants could hardly have come from there. 

 It was too late in the evening to examine Llyn-y-Fan Fawr 

 thoroughly, and trace the plants to their home in it : though 

 I hope to do so another time. A fisherman would not consider 

 such small plants to be tceeds : they would not shelter fish. — H. J. 



ElDDLESDELL. 



Helianthemum vulgare in Middlesex. — Mr. Benbow (p. 278) 

 can find no report of the occurrence of Helianthemum. vuhjare in 

 Middlesex prior to his own. He will find records in Watson's 

 Top. Bot. ed. 2, under the plant — "21 Middlesex. Hind"; and 

 (quite generally) in Pryor's Flora of Hertfordshire, and Hanbury & 

 Marshall's Flora of Kent, p. xxxvii. Trimen & Dyer, Flora oj 

 Middlesex, mention it as one of the "wants." — H. J. Eiddlesdell. 



Wandsworth Common Casuals. — Last winter the " Three Island 

 Pond" on Wandsworth Common was drained and cleaned, and the 

 removed mud and earth were deposited at the nearest corner of the 

 Common, just above the railway. On the waste heap so formed 

 I have this week (Sept. 14) found some large plants of Panicum. 

 Crus-galU L., and a smaller number of Sctaria <jlaitca Beauv. Six 

 years ago, the east bank of the railway-cutting was re-made, and 

 the old wooden bridge near the middle of the Common was replaced 

 by a larger one. At each end of the bridge several small spaces 

 were then enclosed and planted with gorse and blackthorn, to re- 

 produce as far as possible some of the fast-disappearing features of 

 the Common. In one of these enclosures, this summer, about a 

 score of plants of Cnicus setosus Bess, have appeared ; also, in the 

 same and neighbouring spaces, a single specimen each of Picris 

 echioides L., Salvia Verbenaca L., and Erigeron canadense L. Save 

 for the last-named species, which, during 1885 only, grew on a 

 newly laid-out road a furlong from this point, and has this year 

 been found in the station garden-plots equally distant, none of 

 these plants have been previously seen by me on or near the 

 Common, though I — living on its margin — have observed and 

 recorded its flora closely for seventeen seasons. No new soil or 

 bushes have been brought into the enclosures since they were 

 originally made. Just after the reconstruction of the railway bank, 

 a single Hyoscyamus niger L. appeared upon it, and flowered, but it 

 was destroyed in the same year. During the present summer, half 

 a dozen or more fine teasels, IHpsacus sylvestris Huds., sprang up in 

 the garden of a friend, bordering on the Common : their introduction 

 cannot be accounted for. I never met with the teasel nearer than 

 in a park, lately built on, at Tooting Common. Last year and 



