LIST OF ILLUSTRATIONS. 
Plate I.— A. ASTRAGALUS FILIFOLItJS. 
Page. 
FtODRE 1. Pistil enlarged. 2. CrosB section of the ovary enlarged. 3. Legume transversely divided. 4. Same 
longitudinally divided. ...» 38 
B. ASTRAGALUS BISULCATUS, 
FiOCRE 6. Fruit witli a leaf, &c. 6. Fruit, with the calyx, kc, transversely divided, enlarged to thrice the natural 
size .............. „..o. ...... ........ . = o ».................„»».„...- 38 
Plate 11.— MUSENIUM DIVARICATUM. 
FiOtaE 1. Vertical section of a flower. 2. Fruit. 3. Tho same, with the mericarps separating. 4, 6. Cross sycliona 
of the fruit and seeds. Tho details variously magnified ................................................. 30 
Platb IIL— ENDOLEPIS SUCKLEYI. 
Figure 1. Staminate flower. 2. Vertical section of the same, with the lohes of the calyx inflexed. 3. Pistillate 
flower, with the involucre entire. 4. Same, with one side of the closed involucre cut away. 5. A 4-leaved 
calyx of a pistillate flower. 6. Pistillate flower with its 3-leaved calyx, the involucre removed. 7. Pistil, with 
its ovary divided. 8. Fruit in its involucre. 9. Same, with one side of the involucre cut away. 10. The seed 
with its funiculus ; the micropylo has become superior. 11. Embryo detached. The details all variously mag- 
nified = ....... -, . .... . . »..„ = o i'd 
Plate IV.— OBIONE SUCKLEYANA. 
Figure !.• Staminate flower spread open. 2. Pistillate flower in its involucre. 3. Same vertically divided. 4. Fruit 
in its involucre. 5. Cross section of the same. 6. Longitudinal section of the same. 7. The seed vcrtioally 
divided. Details variously magnified . ... . ............... ... ..... 43 
Plate V.— ASTRAGALUS (HOMALOBUS) SEROTINUS. 
FwcEE 1. Vexillum, wing, and a keel petal. 2. Stamens, &c. 3. Calyx and pistil. 4. Legume transversely divided, 
&c. The details magnified...... . ...... .... „......» . .............. 47 
Plate VI.— OEOBUS LITTORALIS. 
FtOtiRE 1. Vexillum, wing, and a keel petal. 2. Calyx. 3. Stamens. 4. Pistil. 5. Inner face of the style. 
R. Legnine. 7. pSame wit)) one valve rempved. All thi" diitails except 6 and 7 enlarged 5+ 
