LINNEAN CLASSES AND ORDERS. 35 



'^Inflorescence spiked ; flowers or spikelets 

 inserted on all sides of a common stalk : 

 Ex. Barley, (Hordeum.) Wheat-grass, (Triticum.) 



''Flowers in unilateral spikes : 

 Ex. Cord-grass, (Spartina.) Finger-grass, (Digi- 

 taria.) 



3. Trigyjiia : 



Ex. Blinks, (Montia) and Jagged-cliickweed, 

 (Holostemii.) 



FOURTH CLASS. -Tetrandria. 



Stamens 4, of equal length. Flowers united. 

 Orders 3. 



Monogynia. Digynia. Tetragynia. 



1 . Monogynia ; the indigenous plants of which 

 order, are thus subdived : 



"Flowers monopetallous, one seeded, superior : 

 Ex. Teasel, (Dipsacus) and Scabious, (Scabiosa.)* 



^Flowers monopetallous, two-seeded, superior : 

 Ex. Bed-straw, (Galium) and Wild-madder, (Ru- 

 bia.)t 



* ^Ul the j)lauts under the fiist Bubdivisiou are of the natural order 

 Dijpmcea. 



+ In the sctontl EjubiUvision, — of the uatuial order RuUacecB. 



