BY E, BREAKWELL. 51 



Chloris acicularis Lindl. 



Hah. — Throughout Australia, except Tasmania. Very cos- 

 mopolitan, as regards its situation in this State. 



Growth-form. — Tufted, somewhat rosette-shaped, bases of stems 

 not bulbous, adventitious roots strongly developed, leaves fairly 

 rigid and pungent. 



Leaf-anato7ny (Fig.S). — The stomata(St.) are confined to the 

 dorsal surface, and are arranged on the edges of groups of three 

 well developed bulliform cells (B.). The bundles are either 

 primary (M.Bj), or a special form of secondary (M.B2). They are 

 large, with well developed xylem-elements. The hypoderma is 

 very well developed. Bands of colourless parenchyma-cells ex- 

 tend between the bundles for about three-quarters of the distance 

 between the two surfaces. 



Conclusion. — This grass presents typical xerophytic features 

 in the development of hypoderma, in the bands of colourless 

 parenchyma-cells, in the position of the stomata, and in the 

 bulliform cells. 



PaNICUM LEUCOPHiEUM H.B.K. 



Hah. — Throughout Australia, particularly in the interior. 

 Also in tropical Africa and America. It is very partial to shady 

 situations. 



Growth-form. — Tufted, bases of stems bulbous and hairy. 

 Leaves narrow and rather flaccid. 



Leaf-anatomy (Fig 9). — The epidermal cells on the ventral 

 surface are interrupted by stomata, and trichomes (T.) are 

 numerous. On the dorsal surface, bulliform cells, in groups of 

 five, occur between the bundles; and stomata, as a rule, occur on 

 one side of these groups of cells. ^ Trichomes are numerous on 

 this surface also. 



The bundles are of three types, viz., primary (M.Bj), secondary 

 (M.B3), and a special form of secondary (M. Bo). The secondary 

 bundles, with no hypoderma, are most numerous. 



Conclusion. — This is the least xerophytic of all the Panic- 

 grasses examined. The hypoderma is comparatively weakly 

 developed, the bundles are small, and the bulliform cells are not 



