118 
of J. pygmaeus), but J. bufonius, Aar. congest us. It is possible some 
of Mr. Barton’s specimens numbered 454 c and 454 A may come 
under the var. ranarius, of which I have no description. There 
is also the var. minutulus , which Albert and Jahandiez in 1908 
described thus : “Plante tres petite, 1-2 centimetres, cespiteuse ; 
tiges plus courtes que les feuilles, portant a leur extrGnite une 
ou rarement deux fleurs.” — H.S.T. 
J. tenuis Willd. (1) Keigate Heath, Surrey, v.c. 17, July 29, 
1916. First observed in this locality in 1915. (See B.E.C. Itept., 
1915, p. 375). — C. E. Salmon. (2) Found on rides in Leigh 
Woods, N. Somerset, v.c. 6, at about 200 feet above the river, 
Oct. 1918, and afterwards in Dec., over a still Avider field, but 
never off the rides. Larger specimens, up to 2 feet high, than 
those sent last year from the Avonside cart road. — H. S. Thomp- 
son. Yes ; it is strange Iioav this species has become distributed 
over England, Ireland, and Scotland during recent years. * It is 
now on record for about 30 c’s and v.-c’s iri Scotland and England, 
and in six of Mr. Praeger’s divisions of Ireland. In Westernen, 
v.c. 97, I think there is no doubt it was introduced in compressed 
hay from America. In N. America it varies greatly, and is 
recorded under seven or more names as species or varieties. 
Michaux, in his “FI. bor.-Amer.”, p. 191, 1803 (four years after 
WilldenoAv named it in 1799), called it J. bicornis, a very appro- 
priate name. — A.B. 
J. filiformis L. Near Lodore, DenventAvater, Cumberland, 
v.c. 70, Sept. 23, 1919. — Coll. J. W. Haines. Comm. Ida M. 
Roper. Yes; the specimens sent me are incomplete, but un- 
usually large. — H.S.T. The sheet shoAvs fine fruit, but a portion 
of the rootstock to shoAv the habit of groAvth should have been 
added.— H.W.P. 
Potamogeton lanceolntus Sm. LligAvy River, Anglesey, v.c. 52, 
Aug. 1919. — J. E. Griffith. The fact that during the last ten 
years tAvo botanists had been unable to find this in the LligAvy 
caused Mr. Griffith to go and gather it this year. — A.B. 
P. [ obtusifolius Mert. & Koch]. Dyke, near Primrose Hill, 
S. of Doddington, Cambs., v.c. 29, July 9, 1919. — J. E. Little. 
Not P. obtusifolius , but good examples of P. Friesii. 1 think a 
new station for Cambs. — A.B. 
P. pusillus L., [var. brevifolius Nolte]. Lo near Tahvrn, 
Llangefni, Anglesey, v.c. 52, July, 1918. — T. E. Griffith. Not 
