286 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
Fic. 173.—Corn, Zea mays. Pistillate inflorescence (ear) and two branches.of staminate 
inflorescence (tassel), < 34; pair of pistillate spikelets attached to rachis (cob) with 
mature caryopses (grains), the second glume showing, X 2; single pistillate spikelet 
soon after flowering showing first (at left) and second glumes and young faba, SK) 2) 2 
staminate spikelet, x 2. 
