SCIENTIFIC COMMITTEE, JULY 23. 
cxxxiii 
close to one side. From this a cord runs round the sinus, giving 
the appearance of the cords running from the midrib to the base 
of the incisions, instead of to the apices of the lobes. It recalled 
the arrangement in a leaf of the common Hawthorn, but this 
lias median cords as well as cords running to the base of the 
incisions ; or, again, that of the cords in the petals of the Com- 
positae, which run up between the petals and round the margins 
of the divisions. A very similar occurrence is in the receptacular 
cube and calyx-limbs of the Cherry, though here, too, each sepal- 
iobe has its proper median cord as well. Marginal cords are 
general in the calyx of Salvia and other Labiates, and appear 
to be supplied for strengthening purposes. 
Mcidium nymjjliceoidcs, DC. — Dr. Ch. B. Plowriglit for- 
warded specimens of this parasitical fungus, with the following 
observations : — " This .Ecidium has been stated by Chodat to be 
connected with the Puccinia on Scirpus lacustris. In November 
1877, Puccinia scirpi was found floating in the river Ouse at 
King's Lynn. During the past winter I found it on the Bulrushes 
(S. lacustris) in the ' Old Bedford ' at Earith, Huntingdonshire. 
On revisiting the spot this July the iEcidium on Villarsia was 
met with in great abundance. The secidial cups occupy the 
upper surface of the leaves in the form of sufficiently obvious 
circular yellow spots. After the affected leaves have been 
removed from the water for a short time the mouths of the cups 
close by a process of inversion, as if they were immature ; but 
when the leaves become thoroughly dry the cups again open. 
The Scirpus in the immediate vicinity of the ^cidium was 
affected with the uredospores." 
j^cidium CJienopodii.—Dr. Plowright also sent specimens of 
this fungus, with the following remarks : — " In the summer of 
1893 Mr. Herbert G. Ward found, on the mud flats of Terrington 
St. Clements, an ^cidium on Su^da maritima. Shortly after- 
wards I met with the same fungus on the muddy shore on the 
opposite side of the estuary of the Great Ouse, near Babingly 
Sluice. It was accompanied by uredospores and a Uromyces 
(U. Chenopodii, Duhy) on the same plant. By some botanists 
this fungus is regarded as identical with U. salicornise, DC, on 
S. herbacea. Doubtless the host plants are allied, but it does not 
therefore follow that the parasitic fungus is the same. Salicornia 
herbacea grows abundantly in the above-named localities, but 
M 
