288 



\'. HARK. 

 Anatomy. 



The characteristic feature is the predominance and concentric regularity 

 of the bast fibres, the parenchymatous and sieve tubes being quite restricted. 

 The bast fibres in a cross-section alter from a rhomboidal shape near the cambium 

 to a square as they recede to the outer cortex as seen in Figure 204, which also 

 shows some young desmogen cells in process of differentiation into young xylem 

 tracheids below the cambium ; these are succeeded by alternate rows of bast 

 cells, sieve tubes, and parenchymatous cells filled with dark-brown manganese 

 compound. 



The outer bark consists almost entirely of a mass of fibre, and the indications 

 for tannin gave such little promise that an analysis for tannin was not undertaken. 



18. Callitris sp. 



HABIT.A.T — Mount Lindsay, 



Remarks, 



This species is suggested from material at Kew Herbarium, and labelled 

 " Callitris, sp., Mount Lindsay, New Holland, 1829, 186," and a note in pencil 

 " C. robusta, var." 



Its branchlets have the angular character of those of C. calcarata, whilst 

 the fruit cones in outward appearance might easily be mistaken for those of 

 C. Muelleri, but the central columella is the largest of any known species. 



Such characters as these are, perhaps, hardly sufficient to warrant the 

 making of a new species, but we make the reference so as to place on record our 

 opinion on the matter. 



Mount Lindsay is rather indefinite as regards locality, especially as no 

 collector's name is given, and when full material is acquired its specific identity 

 will be easily determined. 



The name " intermedia " might be given it. 



