598 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
for nearly 100 yards, July 19, 1910. I found this species in three 
distinct localities in the Dalnially district ; it was associated witli 
other rushes which are undoubted natives, and may have spread 
from natural stations, though those in which I saw it are artificial. — 
Edward S. Marshall. 
Jiincus tenuis, Willd. [ref. No. 84]. Roadside in Glen Ogle, 
v.-c. 88, September 19, 1910. — McTaggart Cowan, Jun. Yes, 
our Member, Mr. T. Ewing, has also sent it me from Ayrsliire 
this year — a N.C.R. for 75.— G. Claridge Druce. 
Juncus diffusus, Hoppe. By the Leeclipool, W. Gloucester- 
shire, October 5, 1910. — J. W, White. Sterile; pitli continuous. 
E.xcellent J. diffusus = effususx injlexjis {giaucus, Elirh.). — Edward 
S. Marshall. 
Juncus castaneus, Sm. [ref. No. 63]. Ben Laoigh, Mid Perth, 
v.-c. 88, September 3, 1910. — McTaggart Cowan, Jun. 
Juncoides imdtiflorum, Druce, var. pallesccns (Hoppe), not of 
Besser. This 1 take it is the ordinary shade-grown form of multi- 
florum which has been sometimes confused with Besser’s plant. 
In a wood near Crianlarich, M. Perth, this was the prevailing form, 
July 1910 [ref. No. 2729]. — G. Claridge Druce. Jtincoides 
mnltiflorutn , var. [L\\z\.\\ 3 i\ paliescens (Hoppe), (Crianlarich, Druce ; 
No. 2729). The Vienna Congress decided to retain Liizula, in- 
stead of the older generic name Juncoides. Mr. Druce’s plant 
agrees with the description of L. multijlora, b. pallescens, Koch, 
‘ Syn.’ ed. 2, 847 {L. palkscens, Hoppe, non Besser): — “omnia 
varietatis a. [type], sed spicae multo dilutiore colore tinctae.” It 
occurs here and there in Britain, usually, if not always, sliade- 
grown ; but it hardly deserves varietal rank, and I strongly suspect 
that it is a mere state, due to situation. 'Die specimens now before 
me are very weak. — Edward S. Marshall. 
Damasonium A/isnia, Mill. Hook Common, N. Hants., August 
1910, n.c.r. 'Phis rare and somewhat erratic species I found in 
considerable quantity in the above locality. It is not recorded 
for N. Hants, in Townsend’s ‘ P'lora,’ ed. 2, and is described as 
very rare in S. Hants., two localities only being given. Here it 
also occurred as the forma terrestris, Gliick, and f. natans, Gliick. 
— G. Claridge Druce. 
Potamogeton alpinus, Ball), [ref. No. 4310]. Canal, Odiham, 
N. Hants. I send these sheets from the locality whence Mr. 
Arthur Bennett (‘Journ. Bot.,’ 174, 1907) named a plant of Miss 
C. E. Palmer’s gathering as “ a/pinus x prac/ongus ? ” These 
specimens, however, seem all to come under the hybrid, nor could 
