BY J. H. MAIDEN'. 183 



The type has a simple leaf, without lobing, but we have, in 

 various trees, examples of leaf-outline approaching that of B. 

 acerifolius and some of the "diverse" shapes of B. diver sifol ins, 

 while the texture is intermediate between the thickish B. aceri- 

 folius and the thinner B. populneus, and the shade of green is 

 intermediate also. The venation of the leaves of the hybrid is 

 intermediate. 



Itis obvious that we have a recent and not well-established 

 species; in naming plants, I, of course, keep as close to the type 

 as possible for B. po/nifneo-aceri/olins, but include all crimsun- 

 flowering forms in it, with a herbarium-note when they much 

 appi-oach one parent or the other. 



The instability of some forms of Brachychiton is referred to in 

 a brief paper by the late Mr. Betche and myself, entitled "Notes 

 on Stercidia {Brachychiton) lurida and discolor,''^ these Proceed- 

 ings, xxiii., 159, 1898. 



His Honor Judge Bevan, speaking of the Wentworth tree, 

 says : —"The seed that has been taken from it, has always pro- 

 duced the white-dowered variety [the common Kurrajong, B. 

 diversi/olius, J.H.M.] .... it stands close to Ivurrajong trees of 

 the white-flowered variety." 



Sercreant J. Mc. A. Clark makes a similar statement. Here 

 is an experiment, on Mendelian lines, to be followed up, but the 

 difficulty of the length of time one has to wait for the flowers 

 of the progeny is a factor, when one considers the few years a 

 man usually occupies an oflicial post. Sowings have twice mys- 

 teriously disappeared already — distributed, or planted out by a 

 zealous gardener. 



The evidence is not conclusive that the species B. populneo- 

 acerifolius originated at Mulgoa. It may have so originated, 

 but it would not account for a precisely similar form, as old or 

 older, at Parramatta, and the other trees, typical B. popn/neo- 

 aceri/olius, or inclining to one or other reputed parent, which 

 are to be found in different parts of New South Wales. 



The Botanic Gardens, Sydney, which celebrates its centenary 

 this year, continued the work of the "Governor's Garden" or 

 " Government Garden " in the propagation and distribution of 



