Comparative Anatomy of the Hymeno- 
phyllaceae, Schizaeaceae and Gleicheniaceae. 
II. On the Anatomy of the Schizaeaceae 1 . 
BY 
L. A. BOODLE, F.L.S. 
With Plates XIX, XX, and XXI. 
HE Anatomy of the Hymenophyllaceae formed the sub- 
X ject of the first part of this paper, which was published 
last year 2 . The present part is concerned with the anatomy 
of the Schizaeaceae. A monograph of this Order, which 
contained a large amount of valuable information regarding 
the anatomy, was published by Prantl (’ 81 ). As many of 
the observations to be described below are confirmatory 
of Prantl’s statements, his work will be referred to at the 
end of the paper, so as to avoid too numerous references. 
Of the anatomical points to be dealt with here, the structure 
of the vascular tissue of the stem and petiole occupy the chief 
place, and form in some respects a more interesting study 
than in the Hymenophyllaceae, on account of the very diverse 
types found within the Order. The simply constructed stele 
of Lygodium is not far removed in type from certain species of 
1 From the Jodrell Laboratory, Royal Gardens, Kew. 
2 Annals of Botany, vol. xiv, p. 455. 
[Annals of Botany, Vol. XIV. No. LVIII. June, 1901.] 
