EUCALYPTUS MACULATA. 



species also lemon-scented, tlie perfume and flavor of the leaves being so excellent as to serve for 

 table-condiment. The citron-fragrance however is hereditary, and seems only developed within 

 the subtropical regions of the range of the species. The leaves of E. citriodora are frequently 

 finer veined. Mr. F. Kilner found the tree flowering in the month of July, when hardly any other 

 kind of Eucalyptus was in bloom at EockhamjDton. He mentions, that there the hardwood of 

 E. citriodora is used for studs, which after twenty years show no decay ; it is furthermore liked 

 for fences, as it splits well, also for shafts of drays, as it is more pliable than most other 

 Eucalyptus-timber, bending readily, and it is also used as material for wheels. Dr. Wuth sent 

 leaves from an adventitious shoot 3 inches broad, and observes, that shoots will spring from 

 stumps or after the destruction of the stem by fire from the root, such shoots representing 

 E. melissiodora. I found the tree of moderate celerity of growth ; and clearly it is highly eligible 

 in its lemon-scented variety for arboreta and the distillation of perfumery. Its essential oil was 

 provided already for the Exhibition of 1867. 



In its systematic affinity E. maculata approaches nearest to E. eximia (Schauer, in Walpers 

 repertorium botanices systematicse ii. 925) and E. Watsoniana (F. v. M., fragm. phytogr. Austral, 

 xi. 98) ; the former differs in the complete persistence of its bark, rendering it thick, rough and 

 wrinkled, in the more subtle venation of its leaves, in flowers sessile on the ultimate usually also 

 longer stalks, not unfrequently more than 3 (4-6) together and in considerably longer more 

 ellipsoid fruits. E. Watsoniana is distinguished also by persistent bark, finer veins of the leaves, 

 further by larger flowers, lid simple and iu width exceeding the tube of the calyx, still more 

 numerous and also longer stamens, fruits of much larger size with not suddenly descending and 

 sharp but broad slightly decurrent rim and a very distinct outer annular channelled margin. 



The Kino of E. maculata according to Dr. Julius Wiesner (Zeitschrift des oesterreichischen 

 Apotheker-Yereines 1871, p. 500) dissolves easily in hot water, furnishing a slightly acid solution 

 of winy odor and yellowish color and getting turbid when cold. 



General Sir E. W. Ward, E.E., K.C.M.G., found the specific gravity of the wood to be at an 

 average in four experiments 0-942, and he records also the strength of this timber to bear a 

 transverse strain and its degree of elasticity, in which respect it ranks high in value, thought not 

 equalling the best Ironbark-trees. Sir E. W. Ward's elaborate tables will be reproduced in these 

 pages at a subsequent occasion. 



Explanation of Analytic Details. — 1, calyx with unexpanded stamens, the inner and outer lids lifted; 

 2, longitudinal section of unexpanded flower ; 3, some stamens in situ ; 4 and 5, back- and front-view of a stamen ; 

 6, style and stigma; 7 and 8, longitudinal and transverse section of a fruit ; 9 and 10, fertile and sterile seeds; 

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



