EUCALYPTUS GUNNII. 



The sap of at least the ali^ine variety has a not unpleasant taste, and bush-peoi>le have 

 converted it occasionally into a kind of cider. 



Our Swamp-Grum-tree has been confined on this occasion within the same specific limits, 

 assigned to it (fragmenta phytographias Australise ii. 62) in 1860, although Bentham restricted 

 E. Gunnii to the highland-form, and kept apart from it the tall lowland-state of the species with 

 larger and particularly more elongated leaves, with generally more flowers in each umbel on longer 

 stalks and stalklets, and with rather more topshajjed not somewhat bellshaped and usually also 

 smaller fruits. Middle forms can however be traced through the different regions of altitude, 

 inhabited by this species. These observations were confirmed in Tasmania by Mr. F. Abbott, who 

 noted, that E. Gunnii descends there to about one thousand feet of the sea-level and forms then trees 

 up to 150 and even 200 feet high. But in the Flora Australiensis iii. 243 the lowland-variety 

 of E. Gunnii was united with E. Stuartiana as now understood ; the discrepancies between the 

 two are set forth in the text of the last mentioned species. In their native haunts these two 

 kinds of trees can be much more easily distinguished, than is possible from branchlets in 

 Museum-collections. A confusion with E. viminalis, contrasted on the same occasion, is much 

 less likely. 



Mii[uel (Nederlandisk Kruitkuudig Archiev iv. 1859) referred states of E. Gunnii doubtfully 

 to E. ligustrina of Candolle, E. Baueriana of Schauer and E. persicifolia of Loddiges. 



A solitary experiment gave the percentage of Kino-tannin in the bark of E. Gunnii as 3'44 : 

 hence the yield is not likely under any circumstances rich. The following are results in this 

 respect obtained from other congeners : E. amygdalina 3-22-3'40 ; E. globulus 4-84 ; E. gonio- 

 calyx 4-12-4-62; E. Leucoxylon 21-94; E. macrorrhyncha n-12-13-41 ; E. melliodora 4-03; 

 E. obliqua 2-50-4-19 ; E. polyantliema 3-97 ; E. rostrata 8-22 ; E. viminalis 4-88-5-97. 



Explanation of Analytic Details. — 1, an unexpanded flower, its lid lifted ; 2, longitudinal section of tlie 

 same ; 3, some stamens in situ; 4, 5 and 6, back-, side- and front-view of an anther, with portion of its filament ; 

 7, style with stigma; 8, longitudinal sections of fruit ; 9, transverse sections of fruit ; 10 and 11, fertile and sterile 

 seeds ; 12, portion of a leaf; all magnified, but to various extent. 



