280 NOTE ON PETALOPHYLLUM RALFSII.  [Szss. uxxt. 
species, P. Lyellii, P. hibernica, and P. Blyttu. Gottsche 
gave it the name Moerckia Blyttu, but the latter is a distinct 
plant which grows on riversides in the Highlands of Scotland. 
Ingham thinks the Redcar plant is identical with the 
Pallavicinia Flotowiana of Lindenberg’s “Synopsis Hepati- 
carum.” Both specimens were found in Coatham Marshes, 
Redcar, close to the sea, near the mouth of the river Tees. 
The ground is half meadow and half marsh. Some parts are 
bare sand, and the water in several small ponds is decidedly 
brackish. A wall of slag separates it from the shore, 
but at high water in a storm a good deal of spray will be 
dashed over this barrier. The plants grow at a distance 
of about 200 yards from the sea, and about 200 yards 
further inland are large ironworks. Consequently the 
vegetation is considerably coated with soot. For the most 
part the plants are scattered singly over the ground, but in 
one place there was found a patch of Pallavicinia about 
5 inches square, and in another spot quite a colony of 
Petalophyllum. 
Dr. BorTHWICK exhibited specimens and photographs of 
the nuts of Celococcus carolinensis which are used in the 
manufacture of buttons and other articles made of vegetable 
ivory. 
Mr. H. F. Tace, F.LS., exhibited a specimen showing 
fusion of leaves in Strelitzia reginw, Banks. The ventral 
surfaces of the petioles of the leaves were completely fused, 
and the midribs also for the greater part of their length ; 
while the lateral laminal expansions were quite free. 
Sections of the vaginal portion of the compound leaf-stalk 
showed a fusion of parts of the ventral surfaces of the 
vagine; the free edges of the vagine being closely rolled 
around one another. 
Mr. R. L. Harrow showed the following plants in flower 
from the Royal Botanic Garden:—Arabis Halleri, Aster 
Pattersoni, Cheiranthus Allioni, Cheiranthus Marshallu, Chrys- 
anthemum ceratophylloides, Cyrtanthus “ Flambeau,” Grey 
Sutherlandii, Myosotis alpestris, Phlox verna x, Polemonium 
humile vax. pulchellum, Ranunculus graminifolius. 
