OAT FLOWER 21 
Fic. 18. — Spikelet of the Oat head, with the bracts spread apart to show 
the flowers. There are three flowers, only (1) and (2) of which develop and 
produce kernels. e, glumes or empty glumes; f, lemma or flowering glume; 
pa, palea; s, stamens; p, pistil; rv, rachilla. The parts of flowers (2) and 
(8) are not indicated. Many times enlarged. 
Fic. 19. — Two views of a head of Wheat with some spikelets removed 
to show the zig-zag rachis. An edge view of the spikelets is shown at the 
left and a side view at the right. 7, rachis; s, spikelets. 
