EXPLANATION OF THE PLATE. 



Plate XII. DARLINGTONIA CALIFORNICA, page 5. 



Fin. ]. Plan of the flower. 



2. A petal, ot' the natural size. 



3. A stamen, considerabl}' magnifiei!. 



4. Grains of pollen, highly magnified. 



5. Longitudinal section of the ovary, having portions of the floral envelopes, 



and two of the stamens; considerably magnified. 



6. Style and stigmas, more jnagnified. 



7. An ovule, more magnified. 



8. Hairs from the inside of the tubular petiole, near its base ; higbiv magnified. 

 0. Hairs from the hood, just within its orifice ; equally magnified. 



PUBLISHED BY THE SMITHSONIAN INSTITUTION, 

 WASHINGTON, D . C . . 



A P R 1 1. , 18 5 8. 



