77 



NATURAL ORDERS 



GR AMINE/E. Grasses. Stems hollow and cylindrical, leaves alternate, with ligule 

 and sheathing base. Inflorescence racemose, consisting of spikelets. Flowers hypo- 

 gynous, with perianth reduced or absent ; stamens three ; ovary monocarpellary, with 

 single ovule. Fruit a caryopsis. 



143. Spikelet. Isolate a spikelet and make a drawing to show : glumes ; fertile 

 flowers, each with inferior and superior palea, three stamens and two feathery stigmas ; 

 sterile flowers. 



144. Flower. Remove the lower palea from an isolated flower and make a drawing 

 to show : superior palea ; three stamens ; ovary, with two stigmas ; two lodicules. 



145. Fruit. Draw the ripe ears of barley and wheat respectively and afterwards 

 draw a single caryopsis. 



