18 
BOTANICAL EXCHANGE CLUB. 
P. Brigijm and P. corclata, and the plate in ‘ Joiirii. Bot.,’ they 
appear ito differ both in the shape of the leaves and the shape of 
the fruit. The small size of the leaves and fruit of these two 
plants, of course, cannot alone be considered as showing any close 
affinity, as each form of the genus Pgnis and Pnoius is liable to 
variation in the size of the leaves and fruits. — (I should be 
extremely obliged to any botanist who could spare me a duplicate 
of true French Pyriis corclata, addi-essed to J. T. Boswell, Balmuto, 
Kirkcaldy, N-. B.) Since I found the bushes of this Pear between 
Seaton and Looe, as recorded by Dr. Masters in the “ Journal of 
Botany,” I have ascertained that another, growing in an old hedge 
in the neighbourhood of Tregantle, E. Cornwall, several miles 
nearer Plymouth, is to all appearance the same peculiar form. 
I so judge, however, without having had the opportunity of seeing 
flowers or fruit. Here, as between Seaton and Looe, the spot 
where it grows is very near the coast. Judging from the character 
of the places in which it occurs at these two stations, it is just 
possible that this small Pear may be indigenous. The more inland 
Egg Buckland station, where I first found it, is less satisfactory. 
There it occasionally produces both flowers and fruit ; and I, last 
spring, was fortunate enough to obtain a good supply of flowering 
specimens for distribution through the Club. — T. E. A. B. 
“ Circica alpina, Linn., b. intermedia." 1. Under hedge over the 
Bollin, at Ashley, or Castle Mill, July 3, 1875. 2. Eaton Hall 
grounds, June 26, 1875. — F. M. Webb and J. L. Warren. Are 
these examples the intermedia of liitetiana, or of alpina? No. 1. 
Gathered just outside the well-known Cotterill Wood. No. 2. Comes 
from a new station quite the other side of the country. — J. L. Warren. 
These seem to me the same as the late Mr. Hunt’s Cheshire speci- 
mens, which Mr. Watson considers as belonging to C. lutetiana. 
Does the fruit ripen in the Cheshire stations ? — J. T. Boswell. 
Callitriche verna. Toad Lane, Alstonfield, Staffordshire. 
August 7, 1876. — W. H. Purchas. This is true C. vernalis, as I 
think is also a plant sent by the Eev. W. H. Purchas from Gatten 
Lane, Alstonfield, Stafibrdshh-e, July, 1876 ; but the fruit in the 
latter is not quite matured, which is essential in determining the 
species of Callitriche. To C. verna may belong another of Mr, 
Purchas’ s plants with immature fruit, from the Bradford York- 
grave, Derbyshire, July, 1876. 
“ Callitriche verna." Ditch, Teering, Essex, June, 1876. — 
E. G. Varenne. a slender form of C. stacinalis. — J. T. Boswell. 
C. verna? Ditch, Fleet, South Devon, May 8, 1876. — T. E. A. 
Briggs. This, I think, must be called vernalis from the fruit, 
but I have never before seen it with spathulate leaves, which 
I believed to be characteristic of stacjnalis and obtusancjula . To 
C. stacinalis must be referred a Callitriche from Paulston, King’s 
Caple, Herefordshire, May, 1872. W. H. Purchas. — J. T. Boswell. 
“ Callitriche verna." Sellack, Herefordshire, June, 1876. — 
Augustin Ley. Clearly C. stacjnalis by the fruit, but remarkable 
for the similarity of its leaves to those of C. pedunculata, which is 
the mud form of C. hamnlata. My experience of C. .stacjnalis, 
