EUCALYPTUS LONGIFOLIA. , 



Link, enumeratio plantarum horti regii botanici Berolinensis ii. 29 (1822) ; Link et Otto, ioones plantarum selectarum 

 liorti regii botanioi Berolinensis 97, t. 45 (1826) ; CandoUe, prodromua systematis naturalis regni vegetabilis 

 iii. 216 ; Bentham, flora Australiensis iii. 237 ; E. WooUsii ; F. v. M., fragmenta pliytographise Australia ii. 50. 



The " Woolly Butt." 



Finally tall ; leave s scattered, elongate-lanceolar or more or less sickleshaped, of equal green 

 on both sides, not shining ; lateral veins subtle, very spreading and rather close to each other, 

 the circumferential vein only slightly distant from the margin of the leaves ; flowerstalks slender, 

 often curved, of conspicuous length, with from tmo to four flowers ; stalklets as long as the calyx 

 or variously shorter ; lid conical, as well as the tube of the calyx pale, the latter broadly obconical, 

 hardly as long as the former ; stamens all fertile, inflexed while unexpanded ; anthers cuneate- or 

 oblong-oval, their cells parallel and slit longitudinally ; stigma not dilated ; fruitsjrather large, 

 semiovate-hellshaped, the rim ascendant or channelled, the vertex very convex ; valves 4, rarely 5 or 

 3, enclosed ; seeds without any appendage, the sterile seeds mostly narrow. 



In forest-land from the lower Genoa-River to the neighborhood of Port Jackson, scattered 

 along the coast-country, thence extending to the base of the Blue Mountains. 



A tree, known to attain under favorable circumstances a height of 150 feet. Bark persistent, 

 grey, rough or wrinkled, somewhat fibrous. ^Wood in request for fuel, less for timber, as it is 

 often traversed by Kino-sediments. When sound, the wood is sought for wheelwrights' work, 

 according to Sir William Macarthur ; other authorities have established its durability for fences. 

 Leaves exceptionally nearly 1 foot long ; their oil-dots usually somewhat concealed, though 

 copious. Flowers seldom solitary, not rarely larger than illustrated ; tube of the calyx with 

 two to four or without any angles ; lid sometimes protracted into a beak-like apex ; rim of the 

 fruit-calyx variable in width, but never narrow. Connective of the anthers conspicuously callous- 

 glandular. Seedlings smooth, their leaves narrow, paler beneath ; some of their earlier leaves 

 opposite, the rest soon scattered. 



Without access to the illustration, issued from the Berlin Botanic Garden, I failed originally 

 to identify this species, although alluding then already to its apparent affinity. 



E. longifolia is not easily mistaken for any other of its congeners ; it has however some 

 external resemblance in its floral organs and in its fruit to B. Leucoxylon and E. c»sia ; but the 

 former of these belongs to the Heterostemones, and both diifer in having the rim of the fruit 

 internally descendent, not externally ascendant ; irrespective of this they are both separated by 

 other differences. The resemblance to E. erythronema and E. cosmophylla is still less marked. 



Dr. Josef Moeller has given a histologic account of the bark of this tree (in der Zeitschrift des 

 allgemeinen oesterreichischen Apotheker-Vereins 1875, n. 15), to which essay I shall refer fully 

 in connection with the histology of other Eucalyptus-barks on some future occasion. 



Explanation of Analytic Details. — 1, upper part of calyx, the lid lifted; 2, longitudinal section of an 

 unexpanded flower ; 3, stamens in situ ; 4 and 5, front- and back-view of an anther ; 6, style and stigma ; 7 and 8, 

 longitudinal and transverse section of a fruit; 9 and 10, sterile and fertile seeds ; 11, portion of a leaf; 1 and 3, 

 natural size ; 2 and 4 to 11, more or less magnified. 



The bark of E. longifolia can be converted into packing-paper, as shown already during the 

 International Exhibition of 1867, when also Kino-tannic acid was prepared in my laboratory from 

 the bark of this tree, the yield proving 8-3 per cent. The percentage of Kino-tannic acid in the 



