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DESCRIPTION OF THE PLATER. 



PLATE YI. THURBERIA THESPESIOIDES.— Page 40. 



A BRANCH OF THE NATURAL SIZE. 



Fig. 1. A flower, divided longitudinally; the corrolla removed; enlarged. Fig. 2, Transverse 

 section of the ovary; also enlarged. Fig. 3. Fruit of the natural size. Fig. 4. The fruit 

 enlarged and longitudinally divided. Fig. 5. Transverse section of the s&me. Fig. 6. A seed, 

 longitudinally divided and enlarged. Fig. 7. The embryo. 



PLATE VII. LITHR^A LAURINA.— Pase 44. 



A. A FLOWERING BRANCH. B. A BRANCH WITH t FRUIT: BOTH OF THE NATURAL SIZE. 



Fig. 1. A flower; enlarged. Figs. 2 and 3. These figures are incorrectj as they do not show 

 the disk upon which the petals and stamens are inserted. Fig. 4. The pistil; more magnified. 

 Fig. 5. The same, longitudinally divided. Fig. 6. The ovule; more magnified. Fig. 7. A 

 drupe, with the persistent calyx. Fig. 8. The same, longitudinally divided. 



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PLATE VIII. HOLACANTHA EMORYL— Page 45. 



Fig. 1. A flowering branch of the sterile plant. Fig. 2. A branch of the fertile plant. Fig. 



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3- A branch in fruit: all the figures of the natural size. Fig. 4. A flower bud, from the sterile 

 plant. Fig. 5. A sterile flower; and Fig. G. The same, longitudinally divided. Fig. 7. An 

 inside view of a magnified stamen. Fig. 8. An outside view of the same. Fig. 9. Compound 

 pistil of a fertile flower; magnified. Fig. 10. The same, longitudinally divided and more 

 magnified. Fig. 11. A drupe, magnified; and Fig. 13. The same, longitudinally divided. Fig. 

 12. The carpophore. 



PLATE IX. CEANOTHUS RIGIDUS.— Page 45, 



A, A FLOWERING, AND B, A FRUCTIFEROUS, BRANCH, OF THE NATURAL SIZE. 



Fig. 1. A flower; magnified. Fig. 2. The pistil; more magnified. Fig. 3. The ovary; stil 

 more magnified, and longitudinally divided. Fig. 4. Transverse section of the same. Fig. 5. 

 The persistent base of the calyx. 



PLATE X. CEANOTHUS DENTATUS.— Page 46. 



A FLOWERING BRANCH, OF THE NATURAL SIZE. 



Pig. 1. A flower; magnified. Fig. 2. Petal from a bud. Fig. 3. Stamen, from the same. 

 Fig. 4. Petal and stamen from an open flower. Fig. 5. Pistil and disk; the ovary with three 

 fleshy protuberances at the summit. Fig. 6. Transverse section of the ovary. Fig. 7. Longi- 

 tudinal section, showing one of the cells laid open, and showing the erect ovule. Fig. 8. A 

 separate ovule. All the figures more or less magnified. 



PLATE XL CEANOTHUS CRASSIFOLIUS.— Page 46. 



A FLOWERING BRANCH, OF THE NATURAL SIZE. 



Fig. 1. An expanded flower; magnified. Fig. 2. An unexpanded flowerj also magnified. 

 Fig. 3. A petal and stamen from the same. Fig. 4. Transverse section of the ovary; more 



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magnified. Fig. 5. Portion of the ovary; more highly magnified; showing one of the cells 

 with its contained ovule. 



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