205 
No. 50. ParUXII. 
Callitris calcarata , R.Br. 
Habitat. —See vol. ii, p. 59. 
Thirty-five miles from Grafton, near Dalmorton, on the Little River. Plenty 
on the rocky hanks. Sent to the mill at South Grafton (J. L. Boorman and 
J.H.M.); Howell (R. Hart); Warialda (H. M. R. Rupp, J. L. Boorman, J.H.M.); 
Acacia Creek, Macpherson Range (W. Dunn). 
ILLUSTRATIONS. 
The four photographs of Cypress Pines were taken by Mr. W. Forsyth. Callitris rubusta : single 
tree from near Wagga Wagga ; the row of trees is taken from the side of the Wagga Wagga-Tarcutta 
Road. Callitris cupressiformis : both the single tree and the clump are taken at Pearl Bay, Port Jackson. 
No. 52. Part XIII. 
Eucalyptus sideroxylon , A. Cunn. 
THE MUGGA; A RED IRONBARK. 
(Natural Order Myrtacea:.) 
Varieties. —See vol. ii, p. 66. 
Under the above name I have discussed Bentham’s variety pallens of E. 
leucoxylon. 
I have raised this to a species under the name E. Caleyi .* It is a Red 
Ironbark, and much esteemed as a timber tree in the districts in which it grows. 
It will be figured and fully described in due course. 
Hybridisation. — E. sideroxylon is a species which readily hybridises, with the 
Boxes, at any rate. Some of the hybrids are so like E. sideroxylon that it is difficult 
to distinguish them unless the trees he seen or a complete suit of specimens, 
including juvenile foliage, be available. E. sideroxylon has narrow juvenile foliage, 
and hence is readily seen to be different from a number of broad-foliaged trees more 
or less related to it. I have dealt with the matter of hybridisation in Eucalvpts, 
as far as this and other species are concerned, in Proc. Linn. Soc. N.S.W., 
1905, p. 492. 
No. 53. Part XIII. 
Aphananthe philippinensis , Planch. 
THE NATIVE ELM. 
(Natural Order Urticaceje.) 
Habitat. —See vol. ii, p. 73. 
Mr. R. 11. Cambage informs me that he has collected this species at Stroud, 
which remains its most southern recorded locality so far. 
Proc. Linn. Soc. N.S. IT., 1905, p. 512. 
