12 
Indiana University Studies 
Figs. 28-31. Fig. 28. Pistillate spikelet of Polytoca in longtiudinal 
section. Figs. 29-31. Pistillate spikelets of Polytoca in transverse sec- 
tion. G, glume; L, lemma; P, palea; Ab, aborted flower; S, style; Ped, 
sterile pedicelled spikelet, or its pedicel; R, rachis, united with the 
pedicel in Fig. 30; O, ovule; St, staminodium; N, nodal parenchyma. 
