99 THE JOURNAL OF BOTANY 
E.—E. Siberia, on the Sajan Mountains (H. Regel, PI. Rad- 
deanze i. a 39, n. 50, 1861—* R. aquatilis var. Sajanensis’ 
.—Russian Turkestan : Ala-Tau Mountains, north of “Lake 
Issik-kul, in the province of Pevuristpensk (ex Hiern, in Journ. 
Bot. 1871, p- 102)—lusus furcata 
n the British Isles found ah on Fingask Loch, Perthshire, 
and on Rescobie Loch and Balgavie Loch in Angus, flowering and 
fruiting under water two to five ge poate the surface (see Journ 
Bot. 1880, p. 344). Its reported occurrence near Dublin (Corry 
in Journ. Bot. 1882, p. 222) is very doubtfu 1, both from the nature 
of the locality and from the fact that a careful observer like Mr. 
: ents: se 
Alpes, on the Lake of Ligny near Annot (Reverchon); Alpes- 
ritimes, in mountain-pools (Reverchon) ; Savoie, at the bottom 
of a pool in the forest of Aut-du-pré on Mt. Mirantin, in the 
commune of Conflans, on a cliff of talc-schist at 1000 metres above 
sea- level (Billot, exs. n. 2605, “ R. lutulentus oe It is found also 
.exs. Austr. Hun ng. n. 1706), also i n Switzerland. e sou 
limit in Europe is in the an “ the ¢ Alpes-Maritimes ee 
ex Burnat, des sgt Mari 
in Bot. Notiser, 1852, p. 156; R. aquatilis var. Sajanensis Regel 
(1861) ; R. lutulentus Song. et Perrier (1859); B. admixtum Nyl. 
et Saell. (1859) ; R. eb gi ee var. demersus N. E. Br rown, in 
En oes Bot. ed. 3, Suppl. 12 (1891). 
The stipules are more nae to the Ligon goes fourths st is 
length), se more of the nature of a 
‘ n size. In 
Arctic Norway it is in flower from i July to 15th September, 
sat after 13th August it may be found in fruit. 
By be aicieas 
le ors ss 
WATSON EXCHANGE CLUB REPORT, 1906-7. 
[Iv accordance with our usual practice, we give some extracts 
from the most recent Report of the Watson Botanical Exchange 
Club. The Report contains a large number of notes on critical 
species, those on Rubi, by the Rev. cal M. Rogers, occupying 
