14 THE AUSTRALIAN NATURALIST, 
again found until it reappears in the vinicity of Heath- 
cote. A few advanced bushes of Pseudanthus pimelioides 
already display clusters of fully-expanded flowers on the 
tips of the branches. The snow-white colour of the flow- 
ers, which are unisexual, is supplied by the sepals of the 
males (perianth), no petals being produced by either stam- 
inate or pistillate flowers. It was collected by Sieber at 
Linden in 1823, and is not known by the writer to occur 
between Linden and the ‘‘ Woronora.’’ One of the ‘‘ Needle- 
bushes,’’ Hakea propinqua, whose large tuberculate fruits 
provide a useful guide to the species, is common in swamps 
on the higher elevations on the Blue Mountains, and de- 
scends to Linden. It reappears on the coast south of the 
Hawkesbury, following the coastal standstone (it is not 
found on the Wianamatta Shale) to the northern side of 
Port Jackson, at Killara, where it was recently collected 
by Miss M. Le Plastrier. It is found in several places in 
the National Park. The flowers of the Blue Mountain 
plants are yellow, those of plants growing in the coastal 
area retaining the customary white petals. Phebaliwm 
diosmeum, a low shrub with heath-like foliage and _ter- 
minal clusters of yellow flowers, is sparsely represented at 
the base of the gullies. This is the nearest locality to 
Sydney known to the writer where this species can be col- 
lected. Pomaderris ledifolia, discovered by Allan Cunning- 
ham at the Cox River, is also found in the neighbourhood 
of Springwood. It is a small-leaved, rather harsh shrub, 
and does not wander far from the river banks. Bertya 
pomaderrioides, a slender, shade-loving plant, is occasional 
among the taller shrubs near the water. It is common in 
Erskine Creek and other watercourses emptying into the 
‘‘Nepean”’ south of Emu Plains. Hibbertia acicularis and 
Bossiwa rhombifolia, neither of which approach very closely 
to Sydney, are here plentiful. The ‘‘Mountain Moss,’’ 
Lycopodiwm densum, is also found on the hillsides at Heath- 
cote. —A, A. HAMILTON. 
: REVIEW. 
Micrations or Fisu.—This is the title of a work by 
Professor Alexander Meek, M.Sc., of Armstrong College, 
in the University of Durham. Professor Meek is also. 
Director of the Dove Marine Laboratory at Cullercoats, a 
little to the north of the entrance of the Rivér Tyne, in 
England. Professor Meek is an ardent worker in the 
