94 VEGETABLE ORGANOGRAPHY. 



Caryophyllus imbricatus, and in which the number of 

 bracts, situated at the base of the calyx, instead of 

 being four, i. e. two pair, we find fifteen or twenty pair, 

 crossing each other at right angles, and imbricated ; on 

 account of this great multiplication, the flower is fre- 

 quently not developed. It appears to result from the 

 premature transformation of the upper leaves into bracts. 



2d. As regards the Perigone, we find in gardens a 

 variety of the white Lily, the tepals of which, instead of 

 being in two rows, and six in number, are disposed in 

 an indefinite number of imbricated verticils. In this 

 case the stamens and carpels are absent, or transformed 

 into tepals ; but we cannot say that the phenomenon is 

 simply owing to this transformation, for the number of 

 verticils is much greater than the whole usual number 

 of the floral organs ; it is, then, a multiplication of the 

 normal number of verticils. In another monstrosity of 

 the Lily, we find the parts of the perigone multiplied, 

 and the stamens also existing. All Monocotyledons 

 with double flowers present, here and there, analogous 

 facts. The inner tube, or, as it is called, the crown of 

 the Narcissus, may be classed here. 



3d. The multiplication of the rows of the Calyx, pro- 

 perly so called, is more delicate to confirm, because of 

 the difficulty of exactly distinguishing the supernu- 

 merary rows of sepals from simple bracts. Some calyces 

 of the Berberideaa and Ericaceae appear to afford ex- 

 amples of this sort. 



4th. The Corolla frequently has multiplied rows : 

 one of the most curious examples is that which Datura 

 fastuosa (PI. 18, fig. 5) presents, where we frequently 

 find two or three corollas inserted, as it were, into one 

 another, and having their lobes alternate. The same 

 phenomenon has been observed in several Campanulas, 

 some Labiatas, &c, and it seems possible in all gamo- 



