74 22 



terminating in tlie leaf-tissue in a clavate apex, not reaching the margin and, in 

 some species, irregularly anastomosing. In lack of simple hairs and in the structure 

 of the scales Stigmatopteris resembles Endrgopleris, but the venation and the exindusiate 

 sori are quite different. I am fully convinced that Stigmatopteris is a very natural 

 genus (perhaps even not a member of the Dryopterideae), but as the same can be 

 said of several other subgenera of Dryopteris dealt with in this paper it is best 

 for the sake of uniformity of treatment to place Stigmatopteris here among the 

 other subgenera. 



Since the publication of my paper on Stigmatopteris I have seen some other 

 species, which belong here. It is very interesting to note that some of these 

 species are indusiale, but the indusia are not reniform as in Dryopteris but 

 peltate, large and circular, fixed at the centre, as a rule coriaceous and glabrous, 

 the edges often upcurved. Species with such indusia have commonly been referred 

 to Polystichum, but there exists no species of true Polystichum having a similar 

 habit. In general habit the species here in question do not differ from Stigmatopteris 

 rotimdaia and allied species, and as to all other characters they fully agree, inter 

 alia also in the variable venation and in the presence of immersed glands. Fée 

 has named provisionally a plant from Guiana Peltochlaena nephrodiiformis, which 

 no doubt belongs here. I can not say definitely what his species may be, but I 

 use here his name Peltochlaena for a section of Stigmatopteris including those 

 species having peltate indusia. It must be remembered that the very large indusia 

 soon fall, and a fertile leaf with all indusia fallen could as well be referred to 

 Eustigmatopteris. 



The genus (subgenus) thus can be divided into two groups: 



1. Eustigmatopteris. Sori exindusiate. Leaves as a rule thin. 



2. Peltochlaena (Fée). Sori furnished with large, circular, peltate indusia. 

 Leaves generally papyraceous to coriaceous. 



In my former paper I have exclusively dealt with the species of the former 

 group and I have there mentioned and illustrated 12 species. Since then I have exam- 

 ined the type-specimens of some species described by Hooker and Baker, and the 

 number of species known to me is now 17, which are all enumerated below and 

 arranged in a key. For descriptions, synonymy and distribution of the 12 species 

 I refer to my former paper. 



Key. 



1. Sori exindusiate. Lamina of most species herbaceous or membranous. 



Eustigmatopteris. 

 2. Pinnæ nearly entire, serrated or lobcd not more than ' s of the way 

 down to the midrib, seldom a little more. 

 3. Sori round, not confluent; veins free. 



4. Only the uppermost pinnae with a shortly decurrent base. 



