Backhousiane. N. O. Myrtacez. 
TAB. DCXIX. 
EvcaLyptus MACULATA. Hook. 
Arbor excelsa, trunco maculato, foliis alternis petiolatis lanceo- 
latis longe acuminatis pellucido-punctatis purpureo-margi- 
natis, nervis copiosis distinctis oblique patentibus, paniculis 
axillaribus terminalibusque parce ramosis folio brevioribus, 
operculo duplici, ext. conico-hemispherico mucronato cupula 
subangulata breviore, int. (corolla) hemispherico membrana- 
ceo nifido, 
Eucalyptus sp. Spotted Gum. Backh. mst. n. 37. 
Han. 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 membranaceous ; this 
inner one has justly been considered by Mr. Brown as the corolla, 
and it here forms an exactly hemispherical glossy membrana- 
ceous 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. 
