15 
The Order liuTiCEiE is of so much importance that T should 
be glad to give some short notes to enable these plants to be at once 
detected, but so varied are the forms that it would be unsafe to 
attempt anything of the kind. It may, however, be remarked that 
the leaves are always luaiked with pellucid glandular dots, such being 
oil-cells, from which cause they are strongly scented ; that there are 
no stipules, that the disk is within the stamens, that the ovules are 2 
in each cell, and the seeds usually solitary in each cell. Some idea of 
the diversity of the form assumed by plants of this order may be 
obtained when we remember that in it are contained the lovely Boronia 
and luscious Orange. 
The Order OiiACiXE^ contains plants differing so much in appear- 
ance, both in regard to growtli and fruits, that one need not be sur- 
prised to find plants of the family being mistaken for those of very 
distinct orders. I, liowever, shall only refer to one ease — viz., the 
climber Cardiopferls lohata^ var. moluecana, which grows about the 
Earron Elver, and may readily be mistaken, if seen in fruit only, for a 
Dioscorea or Yam. The mistake may be found out by remembering 
that the fruit of Cardioptens is superior, while that of Dioscorea is 
inferior. 
LEOTJ5ti>'os^. — This is one of the most important orders of the 
Australian fiora. 1 feel it would be impossibla to describe in a few 
words those distinctive marks by which the whole of the plants may 
be known, yet a little information may be given. As the name of this 
order has reference to the fruit, Avhich is termed a legume or pod, it 
may be pointed out that this is very variable in form, the usual being 
flattish and opening round the margin in 2 valves, but sometimes 
the fruit is ft)ilicular. or opening by one suture, or indehiscent. The 
order is divided into 3 sub-orders, the first being called Papilionaceso, 
from the supposed resemblance of the fiowers to a butterfly. The 
common Sweet Pea is a good example ; the corolla will be observed to 
be of very irregular form, and this has caused the petals of which it is 
com])osed to have different names given to them, the upper one being 
called the staiulaid or vexillum, the two lateral ones the wings or alas, 
and the two lower or inferior ones the keel or carina. The petals are 
imbincate, and in the bnd the standard is always outside. The second 
sub-order is called Cass al pin iea3, taking its name from the genus 
Ccesalpvniff^ a genus containing some very prickly plants, one of which 
has become naturalised in the scrubs about Brisbane (C\ sepiaria). 
The corolla of the flowers in this sub-order is regular or nearly 
regular, imbricate in ihe bud, with tlm upper petal inside. The third 
sub-order is called Mimoseae, from Mlmom, a common name for all the 
Acacia and many allied ])lants. The flowers are small, regular, sessile 
(Rtalkles8),inspikcsor heads, orrarely shortly pedicellate (on pedicels). 
The sepals are A\alvate — that is, their edges do not overlap each other, 
but are often united. Petals valvate with few exceptions, often 
united. The stamens are equal to or double the number of the petals, 
or are very numerous. It may here be remarked that the true perfect 
leaf of Acacia is always twice pinnate, and that which serves as the leaf 
of the greater number of our VYattles, &e., is only the flattened foot- 
stalk of the leaf, which from its resemblance, and from its performing 
the functions of a leaf, is called a phyllodinm, but in the young 
seedling state the true twice-pinnate leaf is always present. The 
