MR. J. MIERS ON THE FAMILY OF TRIURIACEÆ. 57 
ovata, dura, testaceá, coloratä, transversim scalariformi-striatà. Nucleus (embryo protoblasteus) 
opalinus, integumento areolis elongatis reticulato inclusus, texturâ mollis, cellulosus ; cellulis materie 
oleosä grumosä farctis. 
Triuriacee in locis humidis umbrosis sylvarum intertropicarum totius orbis epigeæ. 
The family may be thus divided :— 
$1. Triurieæ. Perianthii laciniæ appendice lineari, æstivatione spiraliter tortä et inclusá, demüm 
exsertä, munitæ. Stylus cum ovario gibboso lateraliter continuus. Antherarum lobi disjuncti, 
singuli 2-locellati. | 
Perianthii laciniæ 3. Stamina 3. . . 1. Triuris. 
Perianthü lacini; 6. Stamina ignota . 2. Hezuris. 
$2. ScraprHiLE. Perianthü lacinize ecaudatz. Stylus feré basilaris.. Antherarum lobi confluentes, et 
inde 4-locellati, rimä transversali v. verticali 2-valvatim hiantes. 
Perianthii lacinie 4. Stamina 2. . . 3. Soridium. 
Perianthü lacinie 6. Stamina 6. . . 4. Sciaphila. 
 Perianthiilacinie 8. Stamina 4. . . 5. Hyalisma. 
EXPLANATION OF THE PLATES. 
Taz. VI. 
Fig. 1. A plant of Sciaphila erubescens :—of the natural size. 
Fig. 2. A single male flower. 
Fig. 3. The same:—magnified. : 
Fig. 4. A section of the same, showing three of its stamens placed opposite the segments, upon the cen- 
tral fleshy androphore. 
Fig. 5. An anther before dehiscence :—more highly magnified. i 
. Fig. 6. The same, burst open; showing its transverse mode of dehiscence, and the cruciform septa which 
form the divisions of its four cells. 
Fig. 7. A female flower of the same plant, after expansion :—magnified. 
Fig. 8. A single pistil, showing its lateral and nearly basal style. — 
Fig. 9. A fruit :—of the natural size. 
Fig. 10. The same, showing its persistent style :—magnified. 
Fig. 11. The same, showing the mode in which the pericarp opens and RER its single erect seed. 
Fig. 13. A plant of Sciaphila picta :—of the natural size. 
Fig. 14. A single male flower, in bud :—much magnified. 
Fig. 15. The same, expanded. ` 
Fig. 16. A female flower of the same, expanded :—equally magni 
Fig. 17. An anther, before and after dehiscence. 
Fig. 18. A single pistillum, showing its lateral style. 
Fig. 19. A plant of Sciaphila maculata :—of the natural size. 
VOL. XXI. 
