DESCRIPTION OF THE PLATES. 263 
PLATE ХП. POLYGALA NUTKANA.—Page 49. 
A PLANT OF THE NATURAL SIZE. 
Fig. 1. A flower laid open; moderately enlarged. Еіс. 2. Sepals; a, the upper odd one; 5, 
a lateral upper one; c, a wing. Fig. 3. Corolla laid open, showing the stamens; magnified. 
Fig. 4. Ап anther, considerably more enlarged. Fig. 5. The pistil; magnified. Fig. 6. A 
capsule divided longitudinally, showing the pendulous seeds, considerably magnified. Fig. Ç. 
Transverse section of the same. Fig. 8. A seed; more highly magnified. 
PLATE XIII. KRAMERIA CANESCENS.—Page 49. 
A PORTION OF THE PLANT OF THE NATURAL SIZE. 
Fig. 1. Plan of the flower. Fig. 2. A flower bud and bracteoles; somewhat enlarged. 
Fig. 3. An expanded flower; more enlarged. Fig. 4. The three upper petals. Fig. 5. The 
two lower fleshy and glandular petals; one an inside view, the other an ottside view; the last 
two figures considerably magnified. Figs. 6-8. Different magnified views of a stamen, (fig. 6 
shows the vertical opening.) Fig. 9. The pistil; moderately enlarged. Fig. 10. The same 
considerably magnified and divided longitudinally. Fig. 11. Transverse section of the same. 
Fig. 12. The ovules, or rather young seeds detached. Fig. 13. A seed; considerably magnified. 
Fig. 14. A fruit of the natural size. Fig. 15. The upper part of one of the barbed prickles 
of the fruit pretty highly magnified. 
PLATE XIV. PICKERINGIA MONTANA.—Page 51. 
A BRANCH OF THE NATURAL SIZE. 
Fig. 1. The vexillum. Fig. 2. One of the wings. Fig. 3. A keel-petal. Fig. 4. A flower 
. With part of the calyx and the corolla cut away. The preceding figures moderately enlarged. 
Fig. 5. Part of a stamen; considerably magnified. Fig. 6. The pistil, equally maginfied, and 
the ovary longitudinally divided. Fig. 7. An immature seed; more highly magnified. 
PLATE XV. HOSACKIA GRACILIS.— Page 54. 
A PLANT OF THE NATURAL SIZE, IN FLOWER AND FRUIT. 
Fig. 1. A flower somewhat enlarged. Fig. 2. Separate petals; magnified; a, the vexillum; 
b, one of the wings; с, one of the keel petals. Fig. 3. A seed; considerably magnified. 
PLATE XVI. ASTRAGALUS (PHACA) LEUCOPSIS.—Page 56. 
А. UPPER PART OF THE PLANT OF THE NATURAL SIZE. В. A PEDUNCLE BEARING MATURE PODS. 
Fig. 1. A flower with the petals removed; moderately enlarged. Fig. 2. Separate petals; 
a, the vexillum; 6, one of the wings; c, the keel. Fig. 3. The stamens and pistil; more mag- 
nified. Fig. 4. The pistil with its stipe; equally magnified. Fig. 5. The ovary laid open; 
more magnified. Fig. 6. A very young seed; considerably magnified. Fig. T. Transverse 
section of a pod, of the natural size. Fig. 8. A seed; considerably magnified. . | 
