493 



1843. Schauer (1843), speaking of E. eximia, says (Waljy. Pep. ii, 925) — 



" Operculo coriaceo convexo umbonato, post anthesin aliquamdiu cupulae cardine quasi adligato 

 cum cupula obconica rugoso-angulata (et reliquis partibus ? . . . .)", which may be translated — 

 " . . . . the coriaceous convex, umbonate operculum some time after the flowering (of the calyx- tube) 

 having the hinge almost bound with the obconical rugose-angular calyx-tube (also the remaining parts ?) 



1844. See also E. maculata (Hooker, 1844). 



1879-84. Mueller's " Eucalyptographia " (1). See also E. eximia quoted at 

 p. 490, and E. Preissii. E. terminalis, E. Abergiana, quoted at p. 9, Part XLI. 



(2) Operculum " tearing off along a rather irregular transverse line " (under 

 E. corymbosa). 



Other species in which I have seen the hinged operculum are E. Abergiana, 

 E. ficifolia, E. Foeheheana, E. hcematoxylon and E. trachyphloia. (All these belong to 

 the Corymbosa?. It appears, indeed, to be more or less characteristic of that group). 



Drawings of the hinged operculum in E. ficifolia and E. hcematoxylon will be 

 shown later. 



In addition, I have seen it in E. cosmophylla (fig. 86, Plate 91), E. grandifolia 

 (fig. 26, Plate 153). 



To recapitulate, we have — 



E. Abergiana. E. hcematoxylon. 



E. cosmophylla. E. Preissii. 



E. ficifolia. E. piriformis, fig. 3a, Plate 75. 



E. Foelscheana. E. trachyphloia, 

 E. grandifolia. 

 and I am confident that special search will add to this list. 



Commisural Line (or Egg in Egg-cup Appearance). 



Above, p. 464, Pvobert Brown (1814) had referred to the commisural line as 

 " the cicatrix caused by the separation of the outer operculum is par- 

 ticularly obvious . . . ." 



Under E. rudis in '" Eucalyptographia," Mueller uses the term '' Commisural 

 line between the lid and tube of the calyx rather prominent," &c. I have explained 

 the matter under E. rudis, Part XXXIII, p. 75. 



This Commisural line, which results in an " egg in egg-cup " appearance, as I 

 have often called it, is the sign of a double operculum. It can be observed in most species, 

 and will probably be found in all, and therefore be found to be generic. It can be 

 distinctly seen in figures of the buds of the following species in the present work : — 



Plate. Fig. Plate. 



131 E. canaliculata ... 96 122 



84 E. cneorifolia ... 15a 60 



129 E.falcata 3a 68 



130 



56 E. Forrestiana ... la 95 



E. amplifolia 



Pig. 

 ... 2c 



E. angustissima 



7a 



E. Bancrofti ... 



6c 





36 and 3a 



E. Caleyi 

 L 



... 13c 



