APPENDIX in. 309 



In my Forest Flora, N.S.W., vi., 20., I have drawn attention to the re- 

 markable variation in the bark, and it may be that more careful examination 

 and comparison of E. Spenceriana and E. microtheca in the field may throw 

 light on the reputed variation of the bark in E. microtheca, which is not quite 

 satisfactory to me. 



2. With E.papuana, F.v. M. 



Undoubtedly the two species have affinity as regards their fruits, but 

 their anthers are quite different, those of E. paptuina being versatile and 

 having long parallel shts, with a comparatively large gland at the back. 

 The flowers are larger and fewer in the panicle and have flat opercula. 



The foliage of the two species has a general resemblance, but the leaves of 

 E. papuana are more undulate, more irregular in outline, thicker, and the 

 venation is coarser. 



The timber of E. papuana is brown and not reddish, and the bark tesselated 

 or smooth. E. papuana is closely related to E. clavigera, A. Cunn. 



3. With E. Brownii, Maiden and Gamboge {Proc. Roy. Soc. xlvii., 21."), 

 1913). 



This belongs to the Porantherae, and is described as a Box, two points of 

 similarity to E. Spenceriana. But the leaves of E. Brownii are more narrow 

 lanceolate, have glossy leaves and have more spreading venation. The in- 

 florescence has very much shorter peduncles and pedicels, and the fruits have 

 not papery walls as in E. Spenceriana. 



4. With E. drepanophylla, F. v. M. 



I only mention this because of the inclusion of an imperfect specimen 

 (North West Coast, AUan Cunningham) under E. drepanophylla, F. v. M., in 

 B. Fl.,iii.,221. 



E. drepanophylla was even less known then than it is now. It is an Iron- 

 bark, and has not yet been found out of Northern Queensland. 



(12). E. alba, Reinw. 



(See Crit. Rev. Eucal., iii., 91, 95, 97.) 



Dr. Jensen attempts to differentiate between the '" Poplar Gum," a large 

 tree of flats, with leaves and fruits invariably treble the size of those of the 

 " Salmon Gum" of Mallee-fike habit. He says there is no gradation from one 

 type to the other, but although this may hold in the districts travelled by Dr. 

 Jensen, the statement is not of universal application. 



402. — " Poplar Gum." Cullen River (Dr. H. I. Jensen). Timber red and 

 flaky. In the speciraen before me the bark is thin and so also is the sap-wood. 



426. — " Poplar Gum." On aUuvial flats. Dean's Camp, Burrundie. 

 (Dr. H. I. Jensen). 



373, 374.—" Poplar Gum." " Sparingly on all flooded flats from McKin- 

 lay River to Mary River, near Coronet Hill. One of the largest trees in the 

 Territory, up to about 50 feet in height. Stem up to 3 feet at base. In wet 

 season a good shade, but the tree loses its leaves in dry season. Bark white or 

 greenish grey to topmost branches." (Dr. H. I. Jensen). 



382. — " Poplar Gum." Wandi to Mt. Diamond flats. (Dr. H. I. Jensen). 



376. '■ Salmon Gum." " Mallee-like, up to 25 feet. Grows on poor, 

 sandy, sihcious soils, never transgresses on to rich soil. Chiefly on hills." 

 Wandi. (Dr. H. I. Jensen). 



K2 



