IX 



SEEDS 



173 



narrower, with toothed palca, tai)eriiig suddenly at the base and 

 more awned. F. heterophylla is much hke F. duriuscula, but the 

 palea less toothed, and it tapers gradually at the base. The whole 

 group is very difficult, and needs attention. 



;. 80. FestHca Myurus. a, 

 "seed," nat. size; b and r, 

 ditto, X about 6. Comi:)are 

 Fig. 50. Nobbe. 



Fig. 81. Nardus stricta. Type 

 of cylindrical "seed" with 

 a terminal stiff awn, here 

 serrulate ; c, "seed," nat. size ; 

 a and h, ditto, x 8. Compare 

 Fig. 50. Nobbe. 



Nardus stricta, L. (Fig. 81). 



Outer palea tough and fused, 10—12 mm. long, narrow, 

 lanceolate and tapering gradually into the stiff, serrulate, 



