312 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
Salix Weigeliana , Willd. x S. nigricans , Sm. High Force, Teesdale, 
June, 1890. — H. E. Fox. “A handsome form of S. phylicifolia, 
but there is no nigricans in it, nor is it near the var. Weigeliana .” — 
E. F. Linton. “ Well-marked phylicifolia , L.” — F. Buchanan White. 
S. Weigeliana , Willd. x S. cinerea , L. High Force, Teesdale, 
June, 1890. — H. E. Fox. “ Type S. phylicifolia ; no cinerea in it.” — 
E. F. Linton. 
A. nigricans , Sm. x phylicifolia, L. Glen Doll, Clova, Forfar, 
14th July, 1890. A noticeable feature is the leaves being nearly 
entire. Foliage unfortunately very backward. — W m. R. Linton. 
“ It is unfortunate that the foliage of this puzzling willow is not more 
mature. Whilst S. phylicifolia preponderates in it, I think that it is 
probably a hybrid (S. Normanni , And.) of that species with S. 
Myrsiniles, L. The structure of the twigs, of the leaves, and of the 
catkins all seem to me to indicate a relationship (though remote) with 
the latter species. The general facies much resembles that of some 
examples of the analogous hybrid S. nigricans x A. Myrsiniles (S. 
Wahlenbcrgii \ And.) with the nigricans element replaced by phylici- 
foliaP — F. Buchanan White. Having gathered this willow with my 
brother, I may say that I do not assent to the name given, nor to the 
suggestion that S. Myrsiniles is (even remotely) connected with it. 
Time may show what it is ; at present I have no satisfactory opinion 
to offer. — E. F. Linton. 
S. herbacea ,\^ x Lapponum , L. Clova, Forfar, 12th July, 1890. — 
Wm. R. Linton. “Two forms of this variable hybrid were repre- 
sented among the specimens sent ; one a more glabrous plant, the 
other with a clothing of the leaves distinctly shewing its descent from 
Lapponum ; both of them fairly intermediate.”— E. F. Linton. 
f uncus tenuis , Willd. Traeth Mawr, Port Madoc, Carnarvonshire, 
1 8th September, 1890. Coll. J. LI. Williams ; comm. W. H. 
Painter. “A very interesting addition to the Flora of the Princi- 
pality.”— E. F. L. 
f tenuis , Willd. W. of Kenmare, Kerry, 25th Aug., 1890. — 
R. W. Scully. See Journ. of Bot., vol. 27 (1889), p. 335. 
f. supinus , Moench., form? Dredged up in 4ft. of water, Easedale 
Tarn, Westmoreland, August, 1890. — H. E. Fox. “Yes.” — Arthur 
Bennett. 
Sparganium ramosum , Curtis, var. microcarpum , Neuman; Beeby. 
Pit on the edge of Delamere Forest, near Mouldsworth, Cheshire, 
20th September, 1890 . — Charles Bailey. Rudyard, Staffordshire, 
24th June and 25th August, 1890. See Rpt. (1888), p. 234.— W. H. 
Painter. “The first is rightly named; and Mr. Painter’s is apparently 
rightly named, but the fruit is very depauperate.” — W. H. Beeby. 
Potamogeton natans , L., form. (P. polygonifolius , var. linearis , 
Syme.) Long Range, Killarney, nth August, 1890. — R. W. Scully. 
“Correct. Dr. Morong and Dr. Tiselius agree with this.” — Arthur 
Bennett. 
P. nitens , Web., var. latifolius , Tis. ( P. perfoliatus x nitens?) 
R. Laune, near the Lake, Killarney, 13th August, 1890. — R. W. 
Scully. “ Without committing myself to the queried hybrid origin, 
