52 
No. 48. 
Callitris Muelleri\ Benth. and Hook. f. 
Botanical description. —Species, C. Muelleri, Bentli. and Hook, f., ex P.v.M., 
Census, 109. 
A handsome, pyramidal, glabrous tree of 40 feet, with a diameter of trunk of 9 to 12 inches. 
Branchlets .—Very angular and coarse, occasionally dimorphic (e.g. Eden). 
Male amenta .—From rarely solitary to clusters of 4, short and thick. 
Fruit-cones. —Globular, f to 1 inch diameter, sometimes as large as those of any species, neither 
angled nor furrowed, the valves 6, very thick, strictly valvate, smootli outside, with a 
minute dorsal point below the summit, the smaller valves about half the breadth of the 
larger ones, though not very much shorter. The inside of the fruit of a tesselated 
appearance; central columella single. 
Fertile seeds .—Deep red brown. 
Bentham (B.E1. vi, 237) says : “ This species requires further investigation.” 
There is no doubt that its affinity to C. propinqua is very close, and to C. calcarata 
nearly as close. Bentham’s remark is a natural one, for the delimitation of some of 
the forms is very difficult. 
Botanical Name. — Muelleri, after the late Baron von Mueller, Government 
Botanist of Victoria. 
Vernacular Names. —This tree is usually known as Cypress Pine. The 
names “Port Jackson Pine,” and “ Illawarra Mountain Pine” should be received 
with caution, as C. cupressiformis may he included. 
Synonym. — Frenela Muelleri, Parlat. in DC. Prod, xvi, 2, 450. 
This species name has been mixed up with C. fruticosa, B.Br., and I will try 
and clear the matter up. 
C. fruticosa, B.Br. ex L. C. Bich. Conif. 49 (1826), and therefore Frenela 
fruticosa, A. Cunn., ex Endl., l.c. “ It is probably a Tasmanian specimen of 
Frenela australis, B.Br., that B. Brown had originally designated under the name of 
Callitris fruticosa, which does not occur in his herbarium.”—(B.E1. vi, 239.) 
Mueller often labelled Blue Mountain specimens of C. Muelleri “C. australis, 
B.Br.,” in the early days. 
Mueller wrote to me, 8th June, 1891,— 
Callitris fruticosa awaits also yet elucidation. I think it is one with very coarse foliage (unusually 
thick branchlets) and usually of shrubby growth, and originally only about Port Jackson, where it may 
have become extinct. 
Neither Bentham nor Mueller saw Brown’s species. Bentham surmised that 
it was from Tasmania, Mueller from Port Jackson. If Mueller’s view is correct, 
then it is the plant we know as C. Muelleri. 
