272 



Mueller (Eucalyptographia) rightly restored the specific rank of the White Mahogany, 

 although previously (under E. pilularis) he had expressed some doubt as to whether 

 E. acmenioides and E. pilularis are really distinct. But the fruits, the bark, and the 

 character of the timber separate the species very readily. Mueller states that the 

 small capsules figured on the left hand of the E. pilularis plate in the " Eucalyptographia " 

 are E, acmenioides. It may be so, but the figure is poor. 



A form from Parramatta has fruits which might very readily be casually taken 

 for E. pilularis. They differ from those of normal E. pilularis in being smaller, the 

 rim not defined, and the valves approaching the orifice. 



The affinity is also indicated in the tendency to the thickening of the rim in 

 E. pilularis and in the frequent coarseness of its foliage, particularly noticeable in 

 maritime situations. This more particularly applies to E. umbra. 



E. pilularis and E. acmenioides have juvenile foliage with pale under-surface. 

 The affinity of the two species was observed by Schauer in describing E. acmeni- 

 oides, when he compared it with E. persicifolia, Lodd., (a synonym of E. pilularis, Sm.). 



. With E. microcorys, F.v.M. 



Timber and foliage a good deal resemble those of E. microcorys. This more 

 particularly refers to the typical form of E. acmenioides, which appears to be the form 

 closest, of all Eucalypts, to E. microcorys. 



3. With E. piperita, Sm. 



In the thin, pale-underside juvenile leaves; in the mature leaves it resembles 

 those of var. carnea, while both piperita and acmenioides have a tendency (greater in 

 the former species) to urceolate fruits. The rim of the fruit is thin in both species. 



4. With E. eugenioides, Sieb. 



I have already expressed the view that Mr. Baker's E. nigra is a form of E. 

 eugenioides. I still think it is closer to that form than to E. acmenioides, although it 

 is evident that the true Stringybarks, the Blackbutt (E. pilularis), and the White 

 Mahogany (E. acmenioides) are closely related. Mr. Baker considers his carnea to be 

 closest to his nigra. For an account of E. nigra, see Part VIII of this work, page 222. 



5. With E. Bosistoana, F.v.M. 



Fruiting twigs of E. umbra may not unreasonably be mistaken for E. Bosistoana, 

 F.v.M. The valves of the latter are more numerous than is the case with E. acmeni- 

 oides ; the valves of E. Bosistoana also are usually a little exserted. E. Bosistoana 

 belongs to the Box Group, so that the two trees could not readily be confused in the 

 forest. 



6. With E. melliodora, A. Cunn. 



I have seen a form, with brown shining fruits, which present a good deal of 

 resemblance in outline to some fruits of E. melliodora. This is worthy of notice, though 

 the two species are otherwise very dissimilar. 



