108 PROCEEDINGS OF THE ACADEMY OP 



shown in my paper, and communications on sex, permits no fiirtlaer 

 development here. Bnt in the case of the female flower the leaf 

 maintains a separate organization all through the catkin or cone; 

 and, as shown in my paper on the Stijndes of Magnolia^ the midrib 

 of the leaf shortens, and, assuming a stipular character, increases 

 in width, until we have the purple bractea so well known in Larix. 

 As soon as these bractea have been arrested in their development, 

 the carpellaiy scales, wiiich answer to the phylloidal fascicles of 

 Pinus, commence their growth in most species of Larch, finally 

 equalling the bracts in length. 



Whether or not the ovules which appear in the axis of the car- 

 pellary scales again result from a third longitudinal bud, I have 

 no evidence ; what I have proposed to myself in this paper is 

 simply to show that the scales in the male catkin of Larix are modi- 

 fied true leaves; ivhile in the female they arise from buds of 

 another organization, being the morphologized secondary leaves, or 

 phylloidal shoots as I term them, of other coniferous genera. 



[July 11, 



