

543 



Dehiscence. 



Bentham (B.F1. iii, 185) says :— " .... opening in longitudinal slits or 

 rarely in terminal pores. . . ." 



Renantherce. — " Anthers reniforni or broad and flat, the cells divergent or at length divaricate, 

 contiguous and usually confluent at the apex." (p. 189.) [The apertures are in fact slits which are roughly 

 parallel with the dorsal sides of the reniform anther. In other words, they are curved. J.H.M.] 



Heteroslemones. — " .... opening in pores or oblong slits, sometimes extending at length 

 confluent." (p. 190). 



Porantherm. — " .... opening in small circular pores, sometimes extending at length into 

 oblong slits." (p. 191). 



Micrantherce. — ". . . . with globular distinct cells opening in lateral slits." (p. 192). 



Normales. — " .... opening longitudinally." (p. 193). 



Then coming to individual species, we have :— 



E. gracilis. " Circular or oblong pores." 



E. paniculata. " Terminal pores." 



E. hcemastoma. " Short oblong divergent at length confluent slits." 



E. pruinosa. " Short slits or circular pores." 



E. oligantha. " Circular pores or very short slits." 



E. Behriana. " Circular pores, rarely at length confluent." 



E. bicolor, E. odorata. "Bound pores or short oblong slits." 



E. uncinata. ' With contiguous cells opening in terminal pores." 



E. hemiphloia. " In pores rather than in slits." 



E. decipiens. " In round pores which become at length longitudinal slits." 



E. albens. " Opening at length to the base or nearly so." 



E. siderophloia. " Opening at first in oblong slits, extending at length to the 



base or almost confluent." 

 E. crebra. " Opening longitudinally to the base." 



The " opening longitudinally of the Normales " is usually supplemented in 

 each species with " distinct parallel cells." This includes the majority of the anthers, 

 and Mueller subsequently made it a separate group under the name of Parallelantheree. 



Mueller (" Eucalyptographia "). I have been very carefully through this 

 work, and have classified Mueller's descriptions of dehiscence according to the terms 

 he uses. Thus those with divergent slits fall very well into Bentham's Renantherse 

 (see his qualifying note at end), and those with pore-like slits or pores come very well 

 into the Porantherse, except pruinosa, which is Strongylantherse. It is when we get 

 to Strongylantherse and Orthantherse that there is difficulty. 



Renantherce. 



" Divergent slits." 



E. acmenioides. E. pilularis. 



E. amygdalina. E. piperita. 



E. eugetiioides, E. stricta. 



