153 
No. 25. 
Eucalyptus maculata. Hook. 
The Spotted Gum. 
(Natural Order MYRTACEaE.) 
Botanical description. —Genus, Eucalyptus (see Part II, page 33). 
Botanical description. — Species, E. maculata , Hook., Ic. PL, t. G19. 
Following is the original description, which will he useful for reference :— 
Arbor excelsa, trunco maculato foliis alternis petiolatis lanceolatis longe acuminatis pellucido- 
punctatis purpureo-marginatis, nervis copiosis distinctis oblique patentibus, paniculis axillaribus 
terminalibusque parce ramosis folia brevioribus, operculo duplici, ext. conico-hemispha?rico mucronato 
cupula subangulata breviore, int. (corolla) hemisphrerico membranaceo nitido. 
Eucalyptus sp. Spotted Gum, mss., n. 37. 
Habitat. —Interior of N. Holland (Fraser) ; Maitland, Liverpool, and Newcastle (Backhouse). 
A large tree, Mr. Backhouse observes, of which the bark falls off in patches, giving it a spotted 
appearance. 
The timber is nearly equal to oak, but the sap or outer layers decay rapidly. The lid or operculum 
is double ; inner one membraneous. This inner one has justly been considered by Mr. Brown as the corolla, 
and it here forms an exactly hemispherical glossy membraneous cup, which often continues to adhere after 
the outer one has fallen away. The gum from the tree contains benzoic acid. (Backhouse.) 
Fig. 1.—Cupula and style, magnified. 
Following is the description hy Bentham, taken from his Flora 
Auitraliensis :— 
A lofty tree with a smooth bark, falling off in patches, so as to give the trunk a spotted 
appearance. 
Leaves. —Ovate lanceolate or lanceolate, straight or falcate, acuminate, mostly 4 to 6 inches long 
or even more, with numerous parallel but rather oblique veins, not so close as in E. 
•pyrophora , Benth., and rather coarse, the intramarginal one close to the edge. 
Umbels .—Three-flowered, usually several together, on short leafless branches, forming a panicle or 
corymb. 
Peduncles and pedicels. —Short and thick, scarcely angular. 
Calyx-tube .—In the young bud shortly cylindrical, when open broadly turbinate, 3 to 1 lines 
diameter. 
Opirculum. —Hemispherical, much shorter than the calyx-tube, the outer one much thicker and 
more persistent than in most species where it has been observed, and usually umbonate or 
shortly acuminate, the inner one (corresponding to the single one of most species) thin, 
obtuse, smooth, and shining. 
B 
