80 GERANIUMS. 
The Australian Flax, unlike the annual Flaxplant of culture, is a 
perennial species, not to be found beyond Australia, and replaced 
in New Zealand by the often white-flowered Linum monogynum. 
The order of Zygophylleee mediates a transit from Geraniaceze 
to Rutaceee. It is beyond the scope of this elementary book, to 
enter into details respecting the exact relations of these plants, 
and information 
Fig, XXXVI. on this subject 
can be found in 
the volume on 
“The Plants of 
Victoria” or the 
first volume of 
the Flora Aus- 
traliensis. As 
illustrative how- 
ever the draw- 
ings of a Zygo- 
‘phyllum and a 
Nitraria are 
given ; the first 
of these derives 
its genus-name 
from the Greek 
language in allu- 
sion to its single 
pair of leaflets ; 
Nitraria is to sig- 
nify by its name, 
that it is per- 
vaded by saline 
particles, though 
these consist 
Fie. XXXVI.—(Nitraria Schoberi).—a, side-view of a not mainly of 
flower ; 4, flower after the lapse of petals and stamens; yjtrates but 
c, a petal ; d, a stamen ; e, fruit deprived of its succulent chia fly lose: 
covering, some of the valves forced back; f, a seed; g, 
longitudinal section of a seed. Ly gophyl lum 
