§72 APPENDIX G. BOTANY. 



Plate XI. Engelmannia pinnatifida. 



Fig. 1, a ray-flower, with an inner involucral scale ; fig. 2, style of the same; 

 fig. 3, a disk-flowery fig- 4, style of the same; fig. 5, an achenium — all 

 magnified. 



Plate XII. Artimesia filifolia. 



Fig. 1, portion of a flowering branch, moderately enlarged; fig. 2, a single 

 head, more magnified ; fig. 3, the same, longitudinally cut and equally mag- 

 nified ; fig. 4, a disk-flower, and fig. 5, a ray-flower, both more magnified. 



Plate XIII. ERYTHRiEA Beyrichii. 



Fig. 1, a flower, magnified; fig. 2, a capsule. 



Plate XIV. Heliotropium tenellum. 



Fig. 1, the calyx; fig. 2, corolla, showing its aestivation; fig. 3, the same, 

 expanded; fig. 4, the same, laid open; fig. 5, fruit; fig. 6, longitudinal 

 section of the seed — all magnified. 



Plate XV. Euploca convolvulacea. 



Fig. 1, a flower, moderately magnified ; fig. 2, the same, laid open and equally 

 magnified ; fig. 3, the stamens, more magnified ; fig. 4, a single stamen, still 

 more magnified ; fig. 5, the pistil, equally magnified ; fig. 6, fruit, with the 

 persistent style ; fig. 7, transverse section of the same, equally enlarged ; 

 fig. 8, longitudinal section of a seed, more magnified. 



Plate XVI. Pentstemon ambiguus. 



Fig. 1, a flower, moderately magnified ; fig. 2, the stamens and a portion of the 

 corolla, more enlarged ; fig. 3, the pistil, equally magnified ; fig. 4, capsule 

 twice the natural size, and dehiscent. 



Plate XVII. Lippia cuneifolia. 



Fig. 1, a bract; fig. 2, a flower; fig. 3, the calyx; fig. 4, the corolla, cut 

 longitudinally, showing the stamens and pistil — all moderately magnified ; 

 fig. 5, the pistil, longitudinally cut, more enlarged. 



Plate XVIII. Abronia cycloptera. 



Fig. 1, involucre, somewhat magnified ; fig. 2, fruit of the natural size ; fig. 3 

 transverse section of the fruit, magnified; fig. 4, an achenium, magnified: 

 fig. 5, transverse section of the same, also magnified ; fig. 6, the embryo. 



Plate XIX. Poa interrupta. 



Fig. 1, a spikelet ; fig. 2, a single flower ; fig. 3, a caryopsis — all magnified. 



Plate XX. Uniola stricta. 

 Fig. 1, a spikelet, magnified. 



