CLASSIFICATIONS OF ORDERS AND GENERA. xlix 
§§§ Perianth inferior, of 6 dry glumaceous leaflets. 
Flowers panicled or capitate. Anthers 2-celled. Capsule 
3-valved Juncea;, p. 288. 
Flowers in the axils of glumes, disposed in spikelets. An- 
thers 1-celled. Fruit a nut or 1-3-celled capsular utricle Restiaceje, p. 293. 
§§§§ Perianth 0 or incomplete. 
a. Flowers in dense heads or cylindric catkins or spikes. 
Climbing, shrubby. Leaves long, prickly Fkeycinetia, p. 275. 
Erect, water or marsh plants. Heads spherical . . . Sparganium, p. 276. 
Erect, water or marsh plants. Catkins cylindric . . . Typha, p. 276. 
Floating or submerged water-plants Naiadeas, p. 277- 
f). Flowers spiked or axillary and solitary. 
Water-herbs of various habit Naiabe.®, p. 277. 
Rush-like plants. Anthers 1-celled Restiacea:, p. 293. 
y. Flowers in the axils of imbricating glumes, arranged in 
spikelets. 
Perianth 0, or of 6 small leaflets. Anthers 1-celled . . Restiacea, p. 293. 
Perianth 0, or of minute scales or bristles. Anther 2- 
celled. Stems solid. Leaf-sheaths closed .... Cyperaceje, p. 296. 
Perianth 0, or of 1-3 most minute scales. Stamens 
usually 3, 2-celled. Stems hollow, jointed. Leaf- 
sheaths split to the base Graminea, p. 317. 
CLASS III. CRYPTOGAMS. See p. lxvi. 
II. KEY TO THE GENERA OF NEW ZEALAND FLOWERING PLANTS, 
ARRANGED UNDER THE LINNA1AN CLASSES. 
The Linnsean Classes are : — 
1. Mowers perfect, having stamens in the same flower with 
Class I. 
II. 
III. 
IY. 
Y. 
YI. 
YII. 
VIII. 
IX. 
X. 
XI. 
XII. 
XIII. 
XIY. 
XV. 
XVI. 
XVII. 
Monandria . . 
Diandria . . . 
Triandria . . . 
Tetrandria . . 
Pentandria . . 
Hexandria . . 
Heptandria . 
OcTANDRIA . . 
Enneandria . 
Decandria . . 
Dodecandria . 
Icosandria . . 
PoLYANDRIA . . 
Didynamia . . 
Tetrad ynamia 
Monadelphia . 
Diadelpiiia . . 
XVIII. POLYADELPHIA. 
1 Stamen in each flower. 
2 stamens, free from one another. 
3 stamens, free from one another. 
4 stamens, free, equal in height. 
5 stamens, free. 
6 stamens, free, equal in height. 
7 stamens, free. 
8 stamens, free. 
9 stamens, free. 
10 stamens, free. 
12 to 19 stamens, free. 
20 or more stamens on the calyx (perigynous). 
20 or more stamens on the receptacle (hypogynous). 
4 stamens, 2 long and 2 short. 
6 stamens, 4 long and 2 short. 
Filaments united into 1 Set at the base or higher. 
Filaments united into 2 sets, usually 9 united and 
1 free {Leguminosm ) . 
Filaments united into 3 or more sets. 
