Fig. 6. 



Fig. 5. 



Fig. 4. 



Fig. 4, a plant enlarged. Fig. 5, specimens from W. H. Long, Texas. Fig. 6, 

 from T. H. McBride, Iowa. 



TYLOSTOMA RUFUM. 



Fig. 7 



Fig. 9. 



Figs. 7 and 8, type specimens in museum at Berlin. Fig. 9, plant enlarged, 

 specimen from Professor D. McAlpine, Australia. 



TYLOSTOMA PURPUSII. 



