58 



Queensland. 



Goondiwindi, near New South Wales border (Glasson); Roxborough (through 

 P. M. Bailey) ; Thargomindah ; " Coolabah," Mulligan Payer. The seed is a 

 favourite article of food of the blacks (H. Clarke) ; Rockhampton (J.H.M.). 



" Coolabah " or " Plooded Box " is found on all Gulf (of Carpentaria) waters, 

 often in floooded ground, of a crooked growth, about 30 feet high (E. W. Palmer, 

 Proc. Roy. Soc. N.S.TV,, 1S83, p. 106). Mr. Palmer's specimens came from the 

 Flinders. 



South Australia. 



Lake Eyre (W. Baldwin Sjjencer). 



North Australia. 

 Port Darwin. Not in fruit (M. Holtze) ; Victoria River, type (Mueller). 



West Australia. 

 Murchison River (Oldfield), in flower and fruit. Labelled by Mueller 

 " P. brachypoda, Turcz. non Benth." 



"Plooded Gum," Mt. Narryer, Murchison (Isaac Tyson, per R. Helms) ; Milly's 

 Soak, near Cue (W. V. Pitzgerald; J.H.M.). 



" Tree 4 to 10 metres high, with pendulous branches, smooth, white bark, 

 subglaucous foliage. Creek near Roeburn in clayey soil, with Acacias. No. 2,758" 

 (L. Diels). 



Dr. J. B. Cleland (who collected it at Strelley River and other north-west 

 localities, where it is known as "Black-heart Gum)" tells me that the trunk of 

 this species in Western Australia is often as white as if whitewashed, and the 

 whiteness rubs off readily if touched. 



AFFINITIES. 



1. With E. melanophloia, F.v.M. 



Mr. R. T. Baker (Proc. Linn. Soc. N.S.TF., xxvii, 226, (1902), points 

 out that PI. microtheca leaves are very similar to those of the lanceolate ones of 

 PJ. melanophloia, and states that the barks are also identical : " in herbarium material, 

 however, the leaves of the latter species can easily be separated from the former, as 

 they always dry a light slate colour, in contradistinction to the brownish colour of 

 those of the Ironbark." Ordinarily the two species are sharply separated as regards 

 the leaves, those of P. melanophloia being broad, almost cordate, and stem-claspino-, 

 while the juvenile foliage of the two species is very different, that of P. microtheca 

 being lanceolate or narrow lanceolate. The fruits of P. microtheca have exserted 



