EXPLANATIONS (»F THE PLATES. 



Plate III. LIBOCEDRUS DECURRENS, page 7. 



Fig. 1. A branch bearing male aments, of the natnral size. 



2. Portion of the same, magnified. 



3. A branch bearing mature fertile aments, of tlie natural size. 



4. An anther, seen from the inside, magnified. 



5. The same seen from the outside. 



6. A mature cone, of the natural size. 



7. A seed, slightly magnified. 



8. Vertical section of the same, more magnified. 



9. The embryo separated, and still more magnified. 



Plate IV. COLEOGYNE RAMOSISSIMA, page 8. 



Fig. 1. Plan of the flower. 



2. A flower-bud, magnified. 



3. A bract, equall}' magnified. 



4. An expanded flower, moderately magnifi Bd. 



5. A stamen, front view, more magnified. 



6. The same, seen from behind. 



7. A flower laid open longitudinally, magnified. 



8. The pistil, equally magnified. 



9. A leaf, magnified. 



10. One of the centrally fixed hairs. 



Plate V. EMPLECTOCLADUS FASCICULATUS, page 10. 



Fig. 1. A flower, on its short branch or spur, magnified. 



2. The same laid open, and more magnified. 



3. A petal, magnified. 



4. A stamen, back view, equally magnified. 



5. Front view of the same. 



6. A grain of pollen, highly magnified. 



7. Pistil, moderately magnified. 



8. Longitudinal section of the same. 



9. An ovule, more magnified. 



