36 THE AUSTRALIAN FLORA. 
abundantly; Summit Crag, Brecon Beacons; Craig Cille (lime- 
stone). Carmarthenshire : Cliffs of Llyn-y-fan-fechan (sandstone). 
All these cliffs have a northern aspect. First observed in 1895. 
THE AUSTRALIAN FLORA. 
neighbourhood of Coolgardie, the boundary between two floras: for 
whereas, to the south of that line, gum-trees (Hucalyptus Spp.) are 
i f 30° th 
_ are almost entirely restricted to the banks of creeks, their place 
being taken there by ‘“‘mulga” scrub. The soil is usually a red 
sandy loam, with occasional areas of yellow sand of which Myrtacee 
are the predominant inhabitants. The isolated dome-like granite 
masses known as “‘ gnamma-rocks” have their peculiar flora; such 
genera as Keraudrenia, Stackhousia, Cryptandra, Drosera, Kunzea, 
Isotoma, Thelymitra, Pterostylis, Borya, Centrolepis, Notholena, Gym- 
; al : 
D. 
and Helipterum, Cephalipterum Drummondii, &e.) being a prominent 
feature in the landscape at that time of year. Considering the 
extremely scanty rainfall, the amount of vegetation carried by the 
desert is truly marvellous, 
From the West Australian Desert, including under that term the 
country south of the tropic of Capricorn, and east of the 118th 
degree of east longitude (of the 119th degree south of lat. 32°), 
867 species have been obtained, all but seven of which are 
Phanerogams. One of these 
and 319 genera: of the latter nearly one-half estricted to 
Composite (ninety-seven Species) make up eleven per cent. of th 
desert flora, and guminose wi i 
ereaies honours. Myrtaceg follow with eighty-nine species: next 
) en 
° . 4 0: 
porinee thirty-five species, Nearly fifty-eight per cent. of ihe 
entire flora consists of species belonging ese eight orders 
