BY E. BREAKWELL. 55 



The bundles are of four kinds, viz., primary (M.Bi), secondary 

 (M.B3), and a special form of secondary (M.B,), and those of an 

 intermediate type (M.B^). They are about equal in numbers. 



The xylem in the bundles consists, for the most part, of small 

 vessels. 



Conclusio7i. — The xerophytism of this grass is shown by its 

 trichomes, bulliform cells, and well developed hypoderma. 



Eragrostis curvula var. valida Stapf. 



Hai. — South Africa, and probably the United States of 

 America. It occurs only under cultivation in this State. 



Growtk-form. — Tussocky, stems hard and woody, adventitious 

 roots long and tough. Leaves long, coarse, but rather flaccid. 



Leaf -anatomy (Fig. \^. Stomata occur on both surfaces. Tri- 

 chomes are absent. The bulliform cells are characteristic; they 

 occur in distinct depressions, and the middle one is very large. 



All the bundles (M.Bi) are primary, and contain large xylem- 

 elements. Hypoderma is very well developed. 



Conclusion. — This grass, an introduced one, is under review 

 for the purpose of comparing it with E. lacunaria. Both are 

 growing side by side at Nyngan Demonstration Farm, and both 

 are showing well marked xerophytism. It will be noticed that 

 the leaves of E. curvnia var. valida, which are very long, have 

 much better developed hypoderma and xylem-elements than E. 

 lacunaria: this is probably for the purpose of maintaining the 

 rigidity of the leaf. 



BIBLIOGRAPHY. 



Haberlandt — Physiological Plant- Anatomy. 



Hamilton, A. G. — Proc. Linn. Soc. N. S. Wales, 1914, p. 152. 



Holm, Dr. — Botauical Gazette, xlvi. 



Ogden, E. L. — U. S. Dept. Agric. : Divti. of Agrostology. Bulletin No. 8. 



ScHiMPER— Plant-Geography. 



SoLERKDER — Systematic Anatomy of the Dicotyledons. 



Suckling, E. L.— Trans. Proc. N. Zealand Inst., xlvi., 1913, p. 178. 



Warming, E. — Oecology of Plants. 



