508 FILICALES 
in the same way as in Marattia or Angiopterts. Their reference to 
a Marattiaceous affinity has been further confirmed by the proof of their 
relations with Pecopterid foliage, bear- 
ing characteristic fructifications.! Such 
stems were not only of arborescent 
stature, but also of considerable thick- 
ness. The leaves were in some cases 
distichous (JZegaphyton), in others 
tetrastichous, in others again spiral 
on a more complex plan: the latter 
correspond more nearly to the leaf- 
arrangement seen in the living genera. 
The general character of such stems 
is suggested by Fig. 280. The con- 
Diagrammatic representation of the end of a : ? $ > 3, 
rhizome of Kaulfussia. w=wings of stipule; clusion seems clear that certain Fern 
com=transverse commissure. (After Gwynne- like lants, of Marattiaceous affinity 
Vaughan.) p en 5 : 7 y, 
but of more aborescent habit than the 
Fic. 276. 
living Marattiaceae, existed in Palaeozoic times, a conclusion which is 
borne out by the study of the leaves and fructifications. 
cease 
Hic. 277. 
A, young sporophyte of Danaea simplicifolia still attached Lo the gametophyte, /r. 
«3. £8, an older sporophyte of the same species. C, gametophyte of A ngivopterts evecta 
with young sporophyte. (4, &, after Brebner; C, after Farmer, from Campbell's Aosses 
and Ferns.) 
The latter in the modern genera are always intra-marginal, on the 
lower surface of the leaf: the sori are distinct, seated each upon a vein. 
'Zeiller, Zlements, p. 120. 
