AND IRRITABILITY OF SENSITIVE PLANTS 



229 



Fig. 24. Section leaflet Biophylum saisitivum. Lines of large hexagonal prismatic 



cr>stals. 

 Fig. 25. Surface view younger leaflet Biophytum sensitivum. Crystals relatively 



small. 



Pl.vte LXV 



Fig. 26. T. S. petiole and gland from leaf of Cassia chamaecrista. Aggregation 

 material in the gland. 



Fig. 27. L. S. petiole and gland of Cassia nicliians. Lines of crystals in petiole and 

 in basal two-thirds of gland. 



Fig. 28. T. S. secondary puhinus of leaflet Amphicarpaea monoica. Relatively few 

 aggregation bodies. 



Fig. 29. T. S. secondary pulvinus, Mimosa Spegazzini. Aggregation bodies num- 

 erous. 



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