75 



2. Longitudinal section of fruit. 

 (a) Calyx-tube. 

 (6) Thickness of calyx-tube. 



(c) Carpels. 



((/) Placental column. 



Northern Territory (W. S. Campbell). 



[Placenta and Placental Column or Axis have been referred to at Part LIX, p. 563. The Placenta 

 (Latin, a cake) is the organ which bears the ovules in an ovary. It surrounds or envelops the Placental 

 Column, to which it is attached. This column sometimes goes by the name of Columella. In the 

 Corymbosa these ovules can be commonly seen attached to the Placenta, and E. ptychocarpa affords a 

 good example. In this species the wings of it are deflexed at the tips.] 



E. buprestium F.v.M. 

 3a. Longitudinal section of fruit. 



(a) Calyx-tube. 



(b) Thickness of calyx-tube. 

 (c,c) Carpels. 



(d) Edge of the carpel. 



(e) Placental column. 

 (/) Oblique rim of fruit. 



36. Traverse section of fruit. 



(a) Calyx- tube. 



(b) Thickness of calyx-tube. 



(c) Pith. 



(d) Cell. 



(e) Carpel. 



(/) Placental column. 

 Kalgan Plains, Western Australia (J.H.M.). 



E. corymbosa Sin. 

 4a. The capsule falling away from the wall of the calyx (calyx-tube). 

 46. Showing separation of carpels. 

 4c. Fertile seeds. 



[The above are slightly diagrammatic, and are from Gaertner's " De Fructibus," tab. xxxiv, fig. 1 

 (1788) as Metrosideros gumifera.] 

 Ad. 



(a) Calyx-tube. 



(6) Thickness of calyx-tube. 



(c) Carpels. 



(d) Seed. 



(c) Placental column. 

 Hornsby, Sydney (W. F. Blakely). 



E. Foelscheana F.v.M. 



5. Longitudinal section of capsule to show the carpels falling away from the wall of the calyx-tube. 



(a) Calyx-tube. 



(b) Thickness of calyx-tube. 



(c) Carpels. 



(d) Placental column. 



Stapleton, Northern Territory (G. F. Hill, No. 453=450). 



E. dichromophloia F.v.M. 

 fi. Longitudinal section of fruit. 



(a) Calyx-tube. 



(b) Thickness of calyx-tube. 



(c) Carpels. 



(d) Placental column. 

 Chillagop., North Queensland, (E. Doran). 



