34 
BOTANICAL EXCHANGE CLUB. 
P. maculatum, “Dyer.” Damp place, Kelvedon, Essex. Sep- 
tember, 1876. — E. G. Vaeenne. 
Salix Russelliana, Sm. Banks of Teviot, Friars, Eoxburgh. 
May and September, 1876. There are many large trees in this 
district, but apparently always planted. The Kev. J. A. Leefe 
confirms the name. — Andkew Bkotherston. 
Salix purpurea, Linn., c. Lamhertiana. Shrewley, Warwick. 
May, 1876. — B. L. Baker. Sent as Woolgariana, but the leaves 
are too large and broad for that variety. — T. E. A. B. 
“ Salix Helix." Tweedside, Hakerston, Eoxbm-ghshh*e. April, 
1876. — E. Hutmacher. The correctness of the name being doubted, 
this was not distributed, but si)ecimens were sent to Dr. Boswell 
for his opinion. — T. E. A. B. Certainly not S. Helix, Sm., which 
has the elongate style and stigmas of S. rubra with the leaves of 
S. purpurea. I should call the Tweedside plant purpurea genuina. 
— J. T. Boswell. 
-S', ramulosa, Borr. = S. Helix, Andersson [fide Leefe.) Side of 
burn, Ednam, May and September, 1876, and hedge, Kelso, 
Eoxburgh, April and September, 1876. This variable form, of 
which I send both male and female examples, is frequent and 
widely spread in this district. — Andrew Brotherston. 
“ 8. Smithiana, Willd.” Hedge near Plympton, S. Devon. 
June 3 and August 29, 1876. — T. E. A. B. This is S. rugosa. — J. T. 
Boswell. 
-S. cinerea, Linn., c. oleifolia, Sm. Hedge near Kingsand, E. 
Cornwall. May and September, 1876. — T. E. Archer Briggs. 
S. nigricans, “Sm.,” “b. cotinij'olia." Shrewley, Warwickshire. 
May 16, 1876. This was sent to Dr. Boswell with the remarks, 
‘ Leaves of the Kew cotinifolia are shorter, rounder, and less 
acuminate. Similar differences appear in the plate of cotinifolia, 
in E. B., ed. hi. Is not this Forsteriana? — T. E. A. B. Certainly 
not cotinifolia ; probably, as Mr. Briggs suggests, P'orsteriana . — J. 
T. Boswell. 
S. nigricans, Sm., f. Damascena. Shrewley Pool, Warwickshire. 
May and September, 1876. — H. Bromwich. Eightly named, I 
think. — J. T. Boswell. 
Typha {? sp.) Shallow pool in the Tavy Valley, near Lopwell, 
S. Devon. July 27, 1876. I supjiose angustifolia by the narrow 
leaves, &c., but the larger of the spikes seems in some measure to 
approach T. latifolia. In other cases I have also noticed inter- 
mediate features in Typha specimens collected in this neighbour- 
hood. — T. E. A. B. This comes very near the T. latifolia (3. media, 
but it is nearer the genuine latifolia than the Wimbledon plants 
mentioned in ‘E. B.,’ ed. hi. — J. T. Boswell. 
Potamogeton polygonifolins. Pour, (deep-water form.) Deep 
pool, Erme Valley, Dartmoor, S. Devon, June, 1876. — T. E. Archer 
Briggs. This approaches var. pseud o-fluitans, but has fewer sub- 
merged leaves. The most characteristic specimens of var. pseudo- 
flu itans that I have seen are in the Edinburgh Herbarium, from 
the Eiver Leven, near Loch Lomond, but the name of the collector 
was not given. — J. T. Boswell. 
