140 CLASS-BOOK OF BOTANY. 
A large order, of wide distribution, including about 60 genera and 700 
species. Of these, only 3 genera, represented by 6 species—viz., Plagian- 
thus (Ribbon-wood) 3 sp., Hoheria, 2 sp., and Hibiscus, 1 sp.—occur in New 
Zealand. ‘The latter is an ubiquitous species; all the rest are endemic, 
but of Australian affinities. Two or three introduced species of Malva 
have become wild. The plants of the order are mostly mucilaginous, 
and many are of great value. Cotton consists of the hairs covering the 
seeds of the genus Gossypium. The Baobab (Adansonia), of tropical 
Africa, is one of the stoutest trees known. ‘ Durio yields the Jack-fruit, 
or Durian, of fine flavour, but repulsive smell. The following genera 
are cultivated for their flowers: Althea’ (Hollyhock), Malva (Mallow), 
Lavatera (Tree-mallow), Malope, Abutilon, and Hibiscus. (Pp. 26-28, 
figs. 29-31.) 
Order XXIII. LeGuMmiInos#. 
Herbs, shrubs, or trees, with alternate, compound, usually 
stipulate leaves. All the plants of the order agree in having 
a pistil formed of 1 carpel, ripening into a legume or remain- 
ing indehiscent ; seed exalbuminous. 
Sub-order I. PApPinionacn”®. 
Herbs, shrubs, or trees. Calyx 5-toothed, often 2-lipped. 
Petals 5, almost hypogynous, unequal; the upper or standard 
enclosing the others in bud; the two lateral or wings usually 
enclosing the two inner, which often cohere to form the keel. 
Stamens 10, almost hypogynous, monadelphous, or 9 united 
and 1 free, very rarely all free. Ovary tapering into a straight 
or curved style, with a small simple lateral or capitate stigma. 
Fruit a 1- or more-seeded legume, or indehiscent. Jimbryo 
with plano-conyex cotyledons and short incurved radicle. 
(Pp. 36-40, figs. 40-51.) 
Sub-order IJ. C#SALPINEA. 
Shrubs or trees. Calyx 5-toothed. Corolla usually of 5 
regular or irregular petals. Stamens 10 or fewer, all free. 
Embryo straight, with or without endosperm. 
Sub-order I1l. Mimosez. 
Shrubs or trees; leaves often replaced by phyllodes. 
Calyx 4-5-fid, valvate. Petals as many as the sepals, free or 
united. Stamens twice as many as the petals or co, free or 
monadelphous. (P. 41, fig. 52.) | | 
‘An immense order, including about 400 genera and 6,500 species. 
Cexsalpiniex, with 76 genera and 650 species, occur chiefly in the tropics; 
Mimosee, with 28 genera and about 1,150 species, more particularly in 
Australia and Africa; while Papilionacex are widespread in their distri- 
bution. 
In no other country are there so few representatives of this great 
order as in New Zealand, there being altogether only 14 species, referable 
to 5 genera, in the islands, all belonging to Papilionacee. Of these, 
Carmichelia is a peculiar endemic genus of 10 species, the affinities of 
which are not very apparent. The other four genera are each represented 
by a single species. Notospartiwm is also quite peculiar and endemic, 
differing from all the known genera. Swainsonia is a large Australian 
