14-8 
Bristol. — H. S. Thompson. Yes ; P. alba var. nivea, the common 
form. This species is not indigenous in Britain. The male tree 
seems to be extremely rare or imperfectly developed. — A.B.J. 
F. serotina Hartig 1 2 catkins fallen from planted trees 
in Hanbury Road, Bristol, March 31, 1920. — H. S. 'Thompson. 
Not F. serotina Hartig, which is always a male tree. It is possibly 
P. marilandica, but foliage is necessary for a satisfactory deter- 
mination. — A.B.J. 
Allium carinatum L. Cult, from specimen on wall-top at 
Witley, Surrey (1872), August 1919. Croydon. Comm. A. 
Bennett. 
Juncus maritimus Lam. var. atlanticus White. Saltmarsh, St. 
Mary’s, Scilly, Sept. 1920. ( See “ Journ. Bot.” 1914, 19.) Legit 
Mrs. Stideford. — J.W.W. A curious plant. Has it been com- 
pared with f. depauperata Loret, or J. rigidus Desp. ? There is a 
var. arabicus Asch. et Buch. in Boiss. “FI. Or.” V. (1882), p. 354. 
A. Bennett. 
Potamogeton panormitanus Bio. Bernardi in Nuove piante inedite 
del barone A. B. Bernardi, pub. dal fig. Andrea, 1838, 6 — 7. 
Hedge Court Mill Pond, Surrey, Oct. 9, 1920. Leg. Mrs. 
Wedgwood. Comm. A. Bennett. Dr. Hagstrom, in his “Critical 
Researches on Potamogeton ,” 1916, pp. 98 — 103, gives a full 
description of this plant, fully sustaining his contention that it 
is a good species, although heretofore called a syn. of P. pusillus 
by Italian botanists. One of the principal distinctions is afforded 
by the stipules (ligules of H.,), which are connate, and another by 
the gemmae (turios of H.), which are much smaller and dif- 
ferently formed to those of P. pusillus. I hope next year to send 
a good series to the Club. These are merely to record its occur- 
rence in our county. — A. Bennett. Dr. Hagstrom (p. 103) 
includes Surrey in his British distribution of this species, and 
on p. 126 he also gives Hedge Court Mill Pond, Surrey, for 
P. franconicus Fischer ( = P. pusillus x trichoides). The first 
record of P. panormitanus as a British plant seems to be that of 
Dr. Druce from a ditch near the sea in Wolverton parish, W. 
Norfolk, July 1884, distributed through the B.E.C. Mr. Little’s 
P. pusillus from the Lake, Southill Park, Beds., June 27 and 
July 12, 1913 — through the W.B.E.C. — is P. panormitanus . — 
W. H. Pearsall. 
Ruppia maritima L. ( R . spiralis Hartm.). Rhine, Kingston 
Seymour, v.c. 6, Sept. 21, 1920. — Ida M. Roper. Yes, R. spiralis, 
but Hartman (who says this is R. maritima of the Linnean 
