357 
The British Association at Birmingham. 
from the latter only in the possession of broad sessile leaves of 
immature type; it has been suggested that the cool climate of 
Tasmania prevents this species of Eucalyptus from growing to 
proper vegetative maturity. Similarly E. pulverulenta and 
E. luelanopliloia seem to be juvenile flowering forms of E. Stuart- 
iana and E. crebra respectively. The author described the 
occurrence of this phenomenon in E. globulus, in which it does not 
appear to have been formerly recorded. A young plant was cut 
down after its first year’s growth to a height of about two feet. 
One of the lateral buds then grew out and became the leader, 
developing in autumn a number of flower-buds in the axils of leaves 
of the type usual in young plants, and these opened as flowers of 
normal size in June, when the plant was little more than two years 
old. Evidently E. globulus is capable under certain conditions of 
producing flowers on juvenile plants, such as occur in other species 
of the genus. 
Prof. F. W. Oliver described the conditions of establish¬ 
ment of Suceda frnticosa and the manner in which this plant 
promotes the fixation of active shingle. He pointed out that while 
to some extent all shingle plants retard or modify the landward 
movement to which shingle beaches exposed to the sea are liable 
when very high tides are accompanied by onshore gales, Suceda 
fruticosa, owing to its shrubby habit of growth and high capacity 
for rejuvenescence, is the most effective stabiliser of all British 
shingle plants. 
Miss W. H. Wortham discussed the origin and succession of 
the vegetation of the south-western corner of Anglesey, where 
sand-dunes form a spit about five square miles in area on a back¬ 
bone of schistose rock. 
Mr. P. H. Allen gave an account of a botanical survey of 
maritime vegetation at Holme, Norfolk, which has been begun by a 
party from the Cambridge Botany School. 
The semi-popular lecture was delivered by Prof. W. H. 
Lang, who dealt with “ Epiphyllous Vegetation.” The lecturer 
described the conditions of life and the chief adaptations of the 
various algse, lichens, and bryophytes which grow as epiphytes upon 
the leaves of arboreous plants and are chiefly found in tropical 
rain-forests. He pointed out the prevalence in such forms of an 
efficient means of attachment to the surface of the leaf, and laid 
stress upon the occurrence of flat disc-like early stages in the 
germination of the spores of epiphyllous liverworts as an adaptation 
to this mode of life. F. C. 
