MR. J. MIERS ON THE FAMILY OF TRIURIACEjE. 



57 



ovata, dura, testacea, colorata, transversim scalariformi-striata. Nucleus (embryo protoblasteus) 

 opalinus, integumento areolis elongatis reticulato inclusus, textura mollis, cellulosus ; cellulis materie 

 oleosa grumosa farctis. 

 Triuriaceee in locis humidis umbrosis sylvarum intertropicarum totius orbis epigeae. 



The family may be thus divided : — 



§ 1. Triukie^e. Perianthii laciniae appendice lineari, aestivatione spirabter torta et inclusa, demum 

 exserta, munitae. Stylus cum ovario gibboso lateraliter continuus. Antherarum lobi disjuncti, 

 singuli 2-locellati. 



Perianthii laciniae 3. Stamina 3. . . 1. Triuris. 



Perianthii laciniae 6. Stamina ignota . 2. Hexuris. 



§ 2. Sciaphile^e. Perianthii laciniae ecaudatae. Stylus fere basilaris. Antherarum lobi confluentes, et 

 inde 4-locellati, rinia transversali v. verticali 2-valvatim hiantes. 



Perianthii laciniae 4. Stamina 2. . . 3. Soridium. 

 Perianthii laciniae 6. Stamina 6. • . 4. Sciaphila. 

 Perianthii laciniae 8. Stamina 4. . • 5. Hyalisma. 





Fig. 1. 

 Fig. 2. 

 Fig. 3. 

 Fig. 4. 



Fig. 5. 

 Fig. 6. 



Fig. 7- 

 Fig. 8. 

 Fig. 9. 

 Fig. 10. 

 Fig. 11. 

 Fig. 13. 

 Fig. 14. 

 Fig. 15. 

 Fig. 16. 

 Fig. 17. 

 Fig. 18. 

 Fig. 19. 

 VOL. 



EXPLANATION OF THE PLATES. ♦ 



Tab. VI. 



A plant of Sciaphila erubescens : — of the natural size. 

 A single male flower. 

 The same: — magnified. 



A section of the same, showing three of its stamens placed opposite the segments, upon the cen- 

 tral fleshy androphore. 

 An anther before dehiscence : — more highly magnified. 

 The same, burst open ; showing its transverse mode of dehiscence, and the cruciform septa which 



form the divisions of its four cells. 

 A female flower of the same plant, after expansion : — magnified. 

 A single pistil, showing its lateral and nearly basal style. 

 A fruit : — of the natural size. 

 , The same, showing its persistent style : — magnified. 



The same, showing the mode in which the pericarp opens and displays its single erect seed. 



A plant of Sciaphila picta : — of the natural size. 



A single male flower, in bud : — much magnified. 



The same, expanded. 



A female flower of the same, expanded : — equally magnified. 



An anther, before and after dehiscence. 



A single pistillum, showing its lateral style. 

 i A plant of Sciaphila maculata : — of the natural size. 

 XXI. I 



