460 EXPLANATION OF PLATES. 



PLATE 12. Hypericum pyramidatum (page 85). Fig. 1. ripe capsule; Jig. 2. cross 

 section of the same, bolli of natural size : fig. 3. seed ; fig. 4. cross sec- 

 tion of the same : fig. 5. embryo. 



13. Hypericum Kalmianum (page 86). Fig. 1. one of the parcels of stamens : 



fig. 2. a petal : fig. 3. pistil : fig. 4. cross section of the capsule : all 

 more or less magnified. 



14. Arenaria squarrosa (page 95). Fig. 1. petal : fig. 2. calyx and capsule : 



fig. 3. seed : all magnified. 



15. Arenaria Grcenlandica (page 95). Figs. 1. & 2. petals : fig. 3. calyx and 



capsule : fig. 4. seed : all magnified. 



16. SiLENE STELLATA (page 100). Fig. 1. ovary and styles : fig. 2. petal. 



17. Fl(erkia proserpinacoides (page 127). Fig. 1. flower : fig. 2. ovaries and 



style, moderately magnified : fig. 3. seed, considerably magnified. 



18. Acer dasycarpum (page 136). Fig. A. cluster of fertile flowers, nat. size. 



Fig. 1. perfect flower, nat. size ; fig. 2. the same magnified ; fig. 3. the 

 same laid open : fig. 4. ovary and styles : fig. 5. sterile flower : fig. 6. 

 abortive ovary : all but fig. 1. magnified. 



19. EuoNYMUs Americanus (page 142). Fig. 1. fruit of the natural size. 



20. Ceanothus ovalis (page 145). Fig. 1. flower : fig. 2. petal : fig. 3. flower 



■with the petals and stamens removed, showing the disk ; fig. 4. longitu- 

 dinal section of the same : fig. 5. seed ; fig. 6. cross section of the same : 

 fig. 7. embryo : all magnified. 



21. Ervum hirsutum (page 156). Fig. 1. plant of the natural size, in flower and 



fruit : fig. 2. a flower magnified. 



22. Lathyrus ociiroleucus (page 157). Fig 1. calyx : fig. 2. vexillum -fig. 



3. one of the wings : fig. 4. keel : fig. 5. stamens : fig. 6. ovary. 



23. Phaseolus perennis (page 160) in flower and fruit. 



24. Clitoria Mariana (page 163). Fig. 1. legume ; fig. 2. the same laid open : 



fig. 3. embryo : fig 4. vexillum : fig. 5. keel : fig. 6. wing : fig. 7. 

 stamens and style : all nat. size. 



25. Astragalus Canadensis (page 172). Fig. 1. spike of legumes, nat. size : 



fig. 2. transverse section of a legume, magnified. 



26. Phaca neglecta (page 173). Fig. 1. legumes, natural size : fig. 2. flower : 



fig. 3. wings : fig. 4. keel : fig 5. stamens, including the pistil ; fig. 6. 

 pistil, separate ; all slightly magnified : fig. 7. legume, open at the ventral 

 suiure, to show the seed ; fig. 8. transverse section of the same. 



27. Stylosanthes elatior (page 174). Fig. I. sterile flower : fig. 2. vexillum: 



figs. 3. & 4. wings : fig. 5. keel : fig. 6. monadeiphous stamens, enclosing 

 the style : fig. 7. pistil : fig. 8. fertile flower : fig. 9. the two bracts sepa- 

 rate : fig. 10. ovary laid open : fig. 11. legume '.fig. 12. seed : fig. 13. 

 embryo : all magnified. 



28. Decodon verticillatum (page 229). Fig. 1. ^ovier ; fig. 2. the same with 



the petals removed : fig. 3. fruit. 



