BOTANICAL EXCHANGE CLUB REPORT 449 



species locally, A. pratensis Schmidt being of comparatively rare 

 occurrence in Leicestershire or the Midlands generally, whilst it 

 seems that the converse obtains in the southern and western coun- 

 ties, the var. alpestris (Schmidt) being also confined more or less 

 to the north and west of England, and seldom or rarely in the 

 central counties. — A. R. Horwood. 



Erica Mackaii Hook. On Craigga-more, a stony moorland 

 hill of about 250 ft. elevation, and on the adjoining heath on peat, 

 apparently avoiding the wetter portions, and in profuse flower in 

 the drier places. Abundant over a limited area, and keeping 

 remarkably true in its botanical characters. Near Eoundstone, 

 Gal way, September. — G. Claridge Druce. 



Limosella aquatica L. Port Meadow, Oxford, August, 1906. 

 Limo sella was first found near Oxford by Sir Joseph Banks about 

 1760, but Sibthorp records it in FL Oxon, 1794, from Noke and 

 Binsey Common, the latter doubtless the locality where Banks 

 found it. In 1820 Baxter found it on Port Meadow, and by the 

 towing-path near Medley Lock, which is close to the Binsey 

 locality, and also on Cowley Marsh on Sept. 11th of that year. 

 Since that time till 1905 we had no record of its being re-found in 

 any of these localities. Year by year I have made search for it in 

 vain, nor lias any one of the numerous workers at our local flora 

 been rewarded by finding it. In 1905, however, I discovered two 

 or three plants on the south-east of Binsey Common, growing on 

 the muddy margin of a ditch. This year Mr. A. B. Jackson found 

 it on the muddy bed of a dried-up pond on Binsey Common in 

 abundance, and I also found it near Upper Wolvercote on Port 

 Meadow, and on the dried-up site of a pond at Noke. The pro- 

 longed drought appeared to be favourable to its appearance, as it 

 prevented the plant being overshadowed by Lemna or Glyceria, 

 &c. It is not a little singular that the plant should have for 

 so long a period been able to exist without being noticed. I may 

 say that, although in August the plant almost made a carpet 

 on the mud, seeding very copiously, by the middle of September 

 there was hardly a vestige left, the plant having been scorched 

 by the sun. Does it exist, like Eleocharis acicularis is capable of 

 doing, for many years without flowering, and then, when brought 

 to the light and air, only produce its seeds ? — G. Claridge 

 Druce. 



Liparis Loeselii Rich. var. From the Glamorgan locality, 

 July, 1906. Less in quantity this year, and not so fine ; the 

 rabbits had bitten down a great many plants, and many others 

 did not flower. The broader, shorter, blunter leaves and fewer 

 flowers give the west county form of the species a distinct look. 

 It perhaps merits a distinct name, and I would suggest var. ovata, 

 if that is available. — H. J. Riddelsdell. " We approve of this 

 plant being varietally distinguished from the type ; it is well 

 marked off from it by the features to which Mr. Riddelsdell calls 

 attention." — A. Ley & W. E. L. 



Crocus nudiflorus Sm. Trent Meadows, Nottingham, March 

 Journal of Botany. — Vol. 45. [December, 1907.] 2 k 



