398 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
Thalictrum saxatile, D. C. Little Trees Hill, Gogmagogs, Cambs., 
8th September, 1891. Coll., G. Goode; comm., J. H. A. Steuart. 
Mr. Arthur Bennett, in the Report for 1891, refers this to T. collinum , 
Wallr. — J. G. 
Ranunculus fluitans , Lam. Brailsford, S. Derby, August, 1888, 
and September, 1889. Form with hairy receptacles. See ‘B.E.C. 
Report,’ 1888, p. 198, and ‘Watson Report,’ 1888, p. 2. Specimens 
were submitted to Mr. Hiern, in 1893. He pronounces them, in 
spite of their hairy receptacle, to be fluitans. Thus the gulf between 
fluitans and peltatus appears to be bridged by intermediates. — W m. R. 
Linton. 
R. peltatus , Schrank ? Basingstoke Canal, near Byfleet Station, 
Surrey, 6th May, 1893. — E. S. Marshall. “The number of un- 
developed carpels, and the weak peduncles, rather suggest its being a 
hybrid, with R. peltatus as one of the parents, but the knowledge of 
hybrids in this genus is too incomplete to allow of a satisfactory 
determination without more mature specimens, and information as to 
the species occurring in the locality.” — H. and J. Groves. 
R. Baudotii , Godr. x Drouetii , Godr. Ditch, Plumstead Marshes, 
W. Kent, 2nd June, 1877. — H. Groves. For many years we have 
suspected the hybrid origin of this plant, and this year (1894) we 
have satisfied ourselves that such is the case, and that the parents are 
R. Baudotii and R. Drouetii , with which species it occurs. We have 
collected several other forms which we think bear unmistakable 
evidence of being hybrids, but wish to examine a much larger number 
of specimens before writing further on the subject. We shall be glad 
if members will collect any apparently hybrid forms, being careful 
also to collect specimens of all the species occurring with them. 
Small and incomplete specimens of these plants are utterly useless for 
determination. It is necessary that they should be fully matured, 
and this is not usually the case until six or eight heads of carpels have 
been produced on each branch. Care should be taken to note 
particulars of the habitat, as to depth of water, and whether running 
or still, also whether the plant is crowded or otherwise. — H. and J. 
Groves. 
R. petiolaris , Marshall. Margin of small loch, Rannoch Muir, 
near King’s House, Argyll, 27th July, 1893. Coll., E. S. Marshall 
and W. A Shoolbred ; comm., W. A. Shoolbred. 
R. Steveni, Andrz. Estick Burn, Ollaberry, Shetland, July, 1889. I 
send a few specimens of this, but they do not show the creeping root- 
stock which is so characteristic of the plant. Mr. F. Townsend 
concurred in referring them to R. Steveni , in an aggregate sense as 
distinct from R. Borceanus ; possibly each may have several varieties, 
unless, indeed, their mutations are mere states. In seedlings grown 
from Shetland Steveni , the cotyledons are round, or broader than 
long, and emarginate ; in those of Surrey Borceanus , they are ovate, 
or oblong-ovate, and distinctly longer than broad. — W. H. Beeby. 
R. muricatus , L. Prestwich, Lancashire, June, 1893. This has 
occurred as a semi-naturalized alien for many years (1875-1893) at 
Prestwich, no doubt imported with other seed. I send a few 
