FISSION, 61 
also seen it in Plantago lanceolata, Reseda luteola, 
Campanula medium, Epacris impressa, and a bifurcation 
of the axis of the spikelet within the outer glumes in 
Lolium perenne’ and Anthoranthum odoratum. In the 
Kew Museum is preserved a cone of Abies excelsa,? 
dividing into two divisions, each bearing bracts and 
scales. A similar thing frequently occurs in the male 
catkins of Cedrus Libani (fig. 25). 

Fig. 25.—Bifurcated male inflorescence, Cedrus Libani. 
This subdivision of axial organs is not unfrequently 
the result of some injury or * mutilation, thus Duval 
Jouve alludes to the frequency with which branched 
stems are produced in the various species of Hquisetwm, 
as a consequence of injuries to the main stem, but this 
is rather to be considered as a multiplication of parts 
than as a subdivision of one. 
Fission of foliar organs—Many leaves exhibit constantly 
the process of fission, such as the Salisburia adiantifolia, 
and which is due perhaps as much to the absence or rela- 
tively small proportion of cellular as compared with 
vascular tissue, as to absolute fission. In the same way 
we have laciniated leaves of the Persian lilac, Syringa 
persica, and Moquin mentions instances in a species of 
! Masters, ‘ Jourl. Linn. Soc.,’ vol. vii, p. 121. 
* Cramer, ‘ Bildungsabweichungen,’ p. 4, tab. vi, fig. 4, figures a case 
of the same kind in Pinus Cembra, 
