On the Anatomy of Danaea and other 
Marattiaceae. 
BY 
GEORGE BREBNER, 
Lecturer in Botany , University College , Bristol. 
With Plates XXII and XXIII, and Text-Figures 28 and 29. 
Introduction. 
HIS investigation was begun in the Jodrell Laboratory, 
A Royal Botanic Gardens, Kew, in 1893, at the suggestion 
of the Honorary Keeper, Dr. D. H. Scott. In connexion 
with it two papers were published, one on the development of 
the mucilage-canals of the Marattiaceae 1 , and another on the 
prothallus and embryology of Danaea simplicifolia , Rudge 2 . 
It was originally proposed to make the general anatomical 
part a comparative study of the then known genera of the 
Marattiaceae. Its completion, however, was unavoidably 
delayed, and now it is found desirable to limit its scope 
somewhat on account of some recent detailed work on the 
Anatomy of Angiopteris evecta 3 . 
1 Journ. Linn. Soc., xxx. 
2 Annals of Botany, x, 1896. 
3 R. F. Shove, On the structure of the stem of Angiopteris evecta , Annals of 
Botany, xiv, 1900. J. Bretland Farmer and T. G. Hill, On the Arrangement and 
Structure of the Vascular Strands in Angiopteris evecta and some other Marattiaceae> 
Annals of Botany, xvi, 1902. 
[Annals of Botany, Vol. XVI. No. LXIII. September, 1902.] 
N n 1 
