435 



1. Podocarpus data, 



R.Br., Mirb. in Mem. Mus. Par. xiii, 75. 

 "BROWN" OR "YELLOW PINE." 



(Syn. — P. ensifolia, R.Br., Mirb., I.e., P. falcata, A. Cunn. Herb.) 



Habitat. 



One of the largest trees of the brushes of the North Coast district of 

 New South Wales and Southern Coast district of Queensland, where it attains 

 a height of over lOO feet. Also vide appended hst. 



L HISTORICAL. 



This species was described by Robert Brown in 1826, and afterwards 

 placed by Mueller under Nageia in his "First Census of Australian Plants," 1882. 



II. SYSTEMATIC. 



Leaves variable in length, measuring from 2 to 6 inches and occasionally 

 9 inches long and about j to ^ inch broad, oblong, lanceolate, obtuse, midrib alone 

 prominent, shortly petiolate. Male amenta, two or three together, sessile up to 

 2 inches long, subtended by short bracts. Female amentum very short, 4 cm. 

 long, solitary in the lower axils of the leaves. Fruiting receptacle i^ cm. long, 

 with one ovoid or globular seed i^ cm. in diameter. 



III. LEAVES. 



{a) Economic. 

 None known, but it may possibly be a stand-by for stock in times of drought. 



{b) Anatomy. 

 This bifacial leaf has the upper surface assimilatory and the lower transpi- 

 ratory. The epidermal and hypodermal cells occur in a single row on both sides. 

 Figures 287-8, the latter being also massed at the edges of the leaf ; the palisade 

 cells are only present behind the assimilatory or upper surface, the rest of the 

 leaf substance being composed of spongy tissue — a structure in this case that does 

 not conform to the usual shape of the vessels of this portion of a mesophyll, or at 

 least in a transverse section of a leaf, when it will be noticed in Figure 289 that the 

 cells are arranged with the long axes parallel to the upper and lower surfaces of 

 the leaf and closely packed ; whilst a longitudinal section of the leaf shows these 

 in an interesting cross section for spongy tissue^ forming quite a bead-like series, 



