BIOLOGY OF THE FLOWER 



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spikelet of Wheat is shown in Fig. 138, 3, and the arrangement 

 of the parts on the axis is shown in the diagram Fig. 138, 2. 

 At the base of it is a scale (g), the outer glume ; imme- 



Fig. 138. Flowers of Grasses. 1, spikelet of Meadow Poa 

 2, diagram of Grass spikelet ; 3, parts of a Wheat spikelet dissected 

 4, parts of flower of Vernal-grass dissected ; 5, floral diagram 

 a, anther ; g, glume ; /, lodicule ; ov, ovary ; p, pale ; st, stigma. 



diately above it is another scale, the inner glume ; and 

 higher still is a smaller and thinner scale, the outer pale, 

 in the axil of which a flowering branch arises. Low on the 



