MIN 
Original Articles. 
PSAMMA BALTICA, R. & S., AS A BRITISH PLANT. 
By Henry Trimen, M.B., F.L.S. 
(Prare CXXVIL) — 
In a note appended to the record (at p. 21) of Mr. Richardson's 
discovery of this grass, I advised a further examination of the plant i» 
situ before venturing to enter it as an English species. The season which 
has since passed has not been allowed to go by without a careful re-investi- 
gation of the locality by Mr. Richardson in company with Dr. Maclagan, 
of Berwick. The result of this has been to strengthen the view all along 
held by the discoverer, that the species has not been, at all events recently 
introduced. In 1871 it was observed for onl y 300 or 400 yards along 
the edge of the sand-bank, but it is now ek to extend in pee 
intervals very abundant, alo ong the coast for about three miles h 
Rev. J. E. Leefe, who has also visited the station, and to whom I am 
indebted for additional specimens, found the grass in two localities half a 
api or a mile apart; he does not venture to say more than that it looks 
Psamma baltica grows, at intervals, all round the peni — 
spots on the same coast. The common pun species, P. arenaria, is 
abundant; and the rarer one, which i garious, is easily seen 
amongst it by its greater height and Y ee C oui with an almost 
nodding point. The e ciat seaside vegetation, Senecio Jacobea, — 
Cynoglossum, Lycopsis, Sedum acre, etc., are also ned: in abundan 
is 
North Sea. It has been found in the following places :— Norway, a single 
t station on an island (Sandösund) in the Christiania Fjord !; 1; Sweden, two 
or three stations in the extreme south, very rarely, Ystad ! Kaseberga and 
Sandhammar; Russia, two or three isolated localities in Livonia and 
— Lithuania ; Ger ermany, in many localities along the coast of Prussia, 
Pomerania, and Mecklenburg, from Königsberg! to Warnemünde !, Lubeck 
and Holstein ; the enm of Bornholm; Denmark, numerous localities 
on both E. and W. s, given in Lange' 8 Handbook ; nearly all the 
ids em p coast of yo Friesland, where it seems to be abundant; 
I. [DECEMBER 1, 1872. 9 A 
“i 
