324 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
Ranunculus sp . Stagnant backwater, Shapwick, Dorset, 21st 
August, 1891. In full flower at this late date. Made out by Rev. 
R. P. Murray and myself, by aid of Mr. Hiern’s ‘ Key,’ to be R. 
splicer ospermus , Boiss. et Blanche in Boiss. ‘ Diagn.,’ R. aquatilis , var. 
sphceros permus, Boiss. ‘ FI. Orient .’ ; and acknowledged by Mr. Hiern 
as very near this plant in his opinion. Some doubt, however, has 
since been thrown upon the naming. It seems to me to be a form of 
R. pseudofluitans , Bab. — E. F. Linton. I should have thought this 
plant had far too irregularly disposed leaves to belong to sphcerospermus 
which seems to have these (of couise on a much larger scale) more 
after the manner of R. circinatus. 
R. Baudotii , Jord., var. Loch of Burness, Westray, Orkney, 
2nd August, 1890.— W. Irvine Fortescue. A form of this 
but with remarkably small flowers ; floating leaves are produced 
though cut into narrow segments. It seems to recede from Baudotii 
towards marinus , Fries, but that has longer peduncles, thicker 
(sessile) segmented leaves, and floating leaves do not seem to be 
produced, but the flowers are smaller than in Baudotii , according to 
specimens I possess from Pastor Laurell (Sweden). No reliance can 
be placed on the form or cutting of the floating leaves in this section 
of Batrachium in a series gathered in the Military Canal, near 
Hythe, Kent, every form that could possibly be described was repre- 
sented under Baudotii. 
R. Boreanus , Jord. Fields near York, July, 1891. — G. Webster. 
I can get no definite opinion on these specimens, but the carpels, 
&c., certainly closely resemble specimens of Boreanus I have from 
M. Lloyd, of Nantes. 
Barbarea arcuata , Reich. (?). Brook side, near Leominster, 
Herefordshire, 9th September, 1891. I wish to receive critical opinions 
on this Barbarea. It differs from the ordinary form of B. vulgaris , 
R. Br., of Herefordshire, chiefly so far as I can see in the more 
slender pods, which appear also to be uniformly spreading. I 
cannot satisfy myself that it differs from the common plant in the 
proportions of the ripe seeds. — Augustin Ley. Not the plant of 
Reichenbach ; the form of vulgaris with the pods spreading has 
them sometimes more so than in these specimens. 
Arabis petrcea , Lam., var .grandiflora, Druce. Ben Lavigh, Perth- 
shire, alt. 1,800ft. and upwards, 31st July, 1891. The purple 
flowered form of Arabis petrcea, Lam., var. grandiflora (Druce) is very 
curious. The petals seem uniformly smaller than in the typical var. 
From only one series of calcareous cliffs on the Tyndrum side of Ben 
Lavigh, Perthshire. — J. Cosmo Melvill. Sir J. D. Hooker in 
Wallace’s ‘ Island Life,’ p. 360, 1892, considers this to be distinguished 
by the larger flowers alone. 
Cardamine flexuosa, With, x pratensis , Linn. Shapwick, Dorset, 
14th May, 1891. A few plants occurred amid a dense growth of the 
two parents ; the characters seemed exactly intermediate. Is not this 
the same as the plant named C. Hayneana, Welw.? If so, C. Hayneana 
will henceforth rank as a hybrid. — Wm. R. Linton. I see nothing in 
this to call it a hybrid. To me it is merely flexuosa ; the form and 
