vILLUSTRATIONS OF INDIAN BOTANY. 



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EXPLANATION OF PLATE 141. 



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Rhododendron arboreum (Neilgherry 

 1, Corolla detached and split open. 



. 2. Stamens, ovary, style and stigma 

 ed bract. 

 3. Anthers, back and front views. 



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GauUheria 



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4 Ovary, and style, and stigma, with the calyx. 



5. Ovary cut transversely, 10-celled. 



6. Ovary cut vertically. 



7. Ovary about half-grown, portion of the pericarp 

 removed to show the seed in situ. 



8. One about the same age cut transversely. 



9. Three detached carpels more highly magnified, to 

 show the inflexion of the carpiUary leaves, the inflexed 

 portions slightly separated by art. 



10. A small portion of a carpel detached, the two pla- 

 centa fully separated. This was a difficult dissection, 

 and not perhaps so clearly shown as it might have been, 



11. A nearly mature fruit, a little reduced. 



12. A capsule after dehiscence and shedding of the 

 seed. i%% 



1. Portion of a raceme with open flower and flower- 

 bud. 



,^, 2. Flower, corolla romoved, showing the calyx and 



stamens in situ. \ ^. 



3. Detached ferPile%tamens, backhand front views. 



4. Corolla of a female flower laid open, showing the 

 sterile stamens adherent to its base. 



with the calyx and 



the embryo sur- 

 a scale to show 



13, 14, 15. A dissected seed, showin 

 romided by albu 



clearly the parts. 

 16. Detached embryo. 



With the exceptions mentioned, all more or less mag- 

 nified, 



Andromeda lanceolata. 

 1- Detached flower. 



9. Corolla split open, showing the stamens adherent 

 to the extreme base. 

 3. 



4. 



5. 



Detached stamens, back and front views. 



Calyx, ovary, style and stigma. 

 Ovary cut transversely. 



6. Cut vertically. 



7. Placenta and ovules del 



5. A detached sterile stamen. 



6. Ovary, style, and stigma, 

 bracteols. 



7. Ovary cut transversely. 



8. Cut vertically, showing the ascending direction of 

 the placentae. 



9. A fruit full grown. 

 10. cut transversely. 



11» cut vertically, showing very distinctly flie 



succulent calyx. 



12. A seed, testa reticulate. 



13. half the testa removed, to show the kernel 



in situ. 



14. Seed cut transversely, showing the embryo in- 

 closed in albumen. 



15. Embryo detached- 

 All more or less magnified, 



, It appears from the above analysis that Gaultheria 

 occasionally shows a tendencv to become polygamous 

 through the partial abortion of the stamens. The char- 

 acter of the appendage of the andiers of this species is 

 very distinct from that of Andromtda^ and if constant 

 throughout the genus would always supply an excellent 

 and easily observed generic character. 



D. 



For explanations of this section, see Vacciiuacea&. 



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COROLLIFLORiE. 



Calyx gamosepalous, that i^„ ttie sepals more or less united. Petals for the most part 

 united, distinct from the calyx at the base. Stamens usually adnate to the corolla. Ovary 

 for the most part free, rarely adnate to the calyx, B. C,^ 



Before proceeding to the examination of the individual families of this large class, a 



few introductory remarks on their general "arrangement and grouping, may perhaps be usefully 

 premised. 



Jussieu, as reiriarked above (see Ertcacece)^ in his original "Genera Plantarum," estab- 

 hshed his classes of Dicotyledoiious plants, first, on the absence or presence of the corolla 



and its form, mono- or po^y-petalous, and secondly, on its point of insertion with reference 

 to the ovarv 

 the ■ ^ 



and 



calyx ; 



calyx; hence his divisions, Hypogynous, on the receptacle, and free from 

 Perigynous, on the lower part of the calyx, and Epigynous, on the throat of 



in those cases where the ovary was embraced by 



the calyx tube, or above the ovary, 



and united to the tube of the calyx. When the corolla is wanting the same series of 

 terms is then applied to the insertion of the stamens. Four of his classes were appro- 

 priated to monopetalous plants, viz. Hypogynous, Perigynous, Epigynous, and Epigynous 

 ^ith united anthers. It is the orders appertaining to the first of these we are now about 



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examine. 



, Be Candolle transposed this arrangement, giving a higher value to insertion than form, 

 but still retaining the corolla, as an element in his arrangement, hence his ThalamiJhrtB^ 

 equivalent to Jussieu's Polypetalae, hypogyna. 2d. Calycijorce, including his Monopetalae, 



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