APPENDIX G. BOTANY. 271 



EXPLANATION OF PLATES. 



Plate I. Anemone Caroliniana. 



Fig. 1, a stamen, magnified; fig. 2, a head of pistils; fig. 3, a head of ripe 

 achenia, both magnified ; fig. 4, a single achenium, more enlarged. 



Plate II. DlTHYRiEA WlSLIZENI. 



Fig 1, a flower, magnified; fig. 2, the pistil, more enlarged; fig. 3, a ripe 

 pod, with one cell opened, to show the seed — also magnified ; fig. 4, the 

 embryo, more magnified. 



Plate III. Geranium Fremontii.* 



Plate rV. Hoffmanseggia Jamesii. 



Fig. 1, a flower; fig. 2, a pod; fig. 3, seed — all moderately magnified. 



Plate V. Sanguisorba annua. 



Fig. 1, a flower; fig. 2, the fruit — both magnified. 



Plate VI. Eryngium diffusum. 



Fig. 1, a separate leaf; fig. 2, a flower; fig. 3, a petal; fig. 4, the ovary, with 

 the styles and three of the sepals ; fig. 5, front view of a stamen and sepal ; 

 fig. 6, side view of the same — all but fig. 1 more or less magnified. 



Plate VII. Euryi\enia Texana. 



Fig. 1 , a mericarp, magnified ; fig. 2, transverse section of the same, more 

 magnified. 



Plate VIII. Liatris acidota. 



Fig. 1, head of flowers, moderately magnified; fig. 2, a single flower, more 

 enlarged; fig. 3, a single bristle of the pappus, still more enlarged. 



Plate IX. Aphanostephus ramosissimus. 



Fig. 1, a ray-flower; fig. 2, a disk-flower; fig. 3, style of the same; fig. 4, 

 achenium, with its coroniform pappus — all magnified. 



Plate X. Xanthisma Texana. 



Fig. 1-3, scales of the involucre ; fig. 4, a disk-flower ; fig. 5, achenium and 

 pappus of the same ; fig. 6, ray-flower ; fig. 7, style of the disk-flower — all 

 magnified 



* This species was not found by Captain Marcy, but it grows in the region that 

 he explored. The plate was prepared for another government report, which was 

 never published. 



