Anatomie. 325 



iörmigen Korkauswüchse mit ihrem regelmässigen geschichteten Aufbaue. 

 Phelloderm ist bei allen Arten mehr oder weniger deutlich ausgebildet. 



Matouschek (Reichenberg). 



Faull, J. H., The anatomy of the Osmnndaceae. (Botanical 

 Gazette. XXXII. Dec. 1901. p. 381—420. Pls. XIV— 

 XVII.) 



Mr. Faul! 's paper is an elaborate study of the anatomy of 

 the Osmnndaceae, principally drawn from a study of Osmimda 

 cinnamomea, but also including the two other American Osmun- 

 das, as weil as Todea barbara and T. superba. The observa- 

 tions were mainly restricted to the mature root, stem, and leaf- 

 irace. 



The various theories as to the nature of the vascular 

 System of the Osmnndaceae are discussed at great length the 

 author accepting that of Dr. E. C. Jeffrey, under whose 

 direction the work was undertaken. 



He conchides that the Osmnndaceae do not differ essen- 

 tially, in the character of the vascular System, from the typical 

 Ferns. In both the stem possesses an „amphiphloic siphono- 

 stele", which in the Osmnndaceae exhibits a greater or less 

 degree of degeneration from the type. 



0. cinnamomea is considered to be the most primitive type, 

 since it shows an internal endodermis which is absent in the 

 other species. 



Besides the presence of an inner endodermis in 0. cinna- 

 momea, the following points among others were demonstrated. 



1. Internal phloem was found in 0. cinnamomea in the 

 region of branching. 



2. The external phloem of the Osmnndaceae forms a con- 

 tinuous cylinder which is not interrupted by the medul- 

 lary rays. 



3. The medullary and cortical tissues are histologically 

 equivalent. 



4. Callus plugs were demonstrated in the sieve-tubes. 



O. cinnamomea, O. regalis and 0. Claytoniana form a 

 series arranged in order of degeneration of their central cylinders, 

 and the same is true of T. barbara and T. snperba. 



D. H. Campbell. 



Stone, Herbert, The identification of wood (by means 

 of microscopical sections. (Journ, Soc. Arts. L. 

 p. 40 — 50. London. With figures.) 



Paper foUowed by a report of the discussion which took place, 

 the Speakers being: Sir Dietrich Brandis (Chairman), H. G. 

 Greenish, J. G. Hill, E. J. Scammell, Dr. Augustine Henry, 

 4. j. Bourdillon and W. Schlich. B. Daydon Jackson (London). 



Stone, Herbert (Rejoinder). (p. 63—64. 104.) 



See also, Bridwood, Sir, G. C. M. and Gamble, p. 5. 



B. Daydon Jackson (London). 



