EUCALTPTUS PULVEEULENTA. 



lenta, mediating a transit to E. Stuartiana. Indeed it was with, some reluctance, that B. pnlvera- 

 lenta became at all accepted into the present work, from which all dubious species for distinct 

 illustration have been and are to be rigorously excluded. As however E. pulverulenta is the 

 only species with opposite leaves, indigenous to the colony of Victoria, it was deemed desirable to 

 accord full elucidation to it. This finally narrow-leaved form of B. pulverulenta, when yet in its 

 young bushy state, has the leaves all broad and opposite ; but they do not continue in that form, 

 : contrarily to what is noted elsewhere. Mr. Falck observed, that the bark of this Bucalypt is 

 pervaded by a peculiar somewhat terebinthine odor, so much so as to have given rise to the local 

 name "Turpentine-tree" for this species. It flowers from October to December; the blossoms 

 are odorous. 



As remarked already, E. pulverulenta is distinguishable from E. Stuartiana only in its 

 foliage, holding the same relation to the last-mentioned congener as E. Risdoni to E. amygdalina, 

 as E. melanophloia to E. crebra, and as E. dealbata to E. viminalis. What physical causes are 

 operating, to bring about these striking local aberrations, has as yet not been ascertained. 



The bark of E. Stuartiana and of E. pulverulenta are very much alike. 



It is unnecessary to adduce differential characters in contrast to other species, there being 

 none very close akin, unless E. viminalis in its state E. dealbata, and this again bears only 

 resemblance to the variety with elongated narrow leaves of E. pulverulenta ; the former has 

 however all its leaves scattered and always attenuated into very conspicuous stalks, shows more 

 prominent and still more spreading and crowded veins, has the flowerstalklets more developed, 

 the fruit-calyces more rounded at their base, and the valves longer and more pointed. 

 Specific name from the powdery greyness of the foliage. 



Explanation op Analytic Details. — 1, an vmeipanded flower, the lid lifted ; 2, longitudinal section of an 

 unexpanded flower ; 3, some stamens in expanded position ; 4-5, front- and back -view of an anther with portion of 

 its filament ; 6, style and stigma ; 7-8, tranayerse and longitudinal section of a fruit ; 9-10, fertile and sterile seeds; 

 — all magnified, but to various extent. 



