121 
basalibus latere basiscopico aucto inaequalibus vix longioribus, pinnatis. Pinnulis 
sessilibus vel potius late adnatis ala angusta connectis, basi subbiauriculatis (auri- 
culis brevibus rotundatis, anteriore costam pinnae tegente) obtusis, oblongis, 2—3 
cm longis, vix 1 cm latis, basalibus aequalibus, marginibus pinnatifidis vel lobatis, 
segments sive lobis rotundatis vel suboblongis, basalibus latioribus; pinnulis basi- 
scopicis pinnarum basalium parum auctis, 5—6cm longis, 1'/2 cm_ latis, basali 
ceteris aequali vel paullo breviore. Costis costulisque superne subplanis glaberrinus, 
inferne teretibus paleaceis (ut supra descrip- 
tum est). Venis nigricantibus, subtus pro- 
minulis, in lobis pinnatis vel furcatis. Soris 
per totam laminam aspersis, uno pro lobo, 
costulae approximato, vel 2—4 in segmentis 
-majoribus pinnarum inferiorum, globosis, 
superficialibus, indusiatis. Indusiis peltatis, 
coriaceis, brunneis, glabris; sporangiis nitidis, 
paraphysibus articulatis, apice glandulosis 
intermixtis. Sporis ovalibus vel subreniformi- 
bus, levibus vel levissime verrucosis. 
This remarkable fern, which I have 
had in my collection for several years, origin- 
ally distributed from “Herb. Mus. Palat. 
Vindob.”, is so different from all other Ameri- ig 99, Basal part of the second pinna from 
can species of Dryopleris known to me, that I below of D. fuliginosa C. Chr. nat. size. 
must confess that I do not know, in which 
group I am to place it. In spite of its peltate indusia it is certainly not a species 
of Polystichum, its whole habit being entirely dryopteroid. Probably it has its nearest 
relatives among the species of Ctenitis, although it differs greatly in several charac- 
ters. In habit it resembles some species of the hirta-group and also some of the 
subincisa-group; from all it differs in its very coriaceous texture, peltate indusia, 
the perfect absence of hairs even on the costz above, in its spores and in its very 
peculiar scales. These are rather small, thick, those of the stipe and rachis closely 
appressed (as in some forms of the ampla-group), those of the cost and costules 
smaller and not so appressed, ovate or spathulate, becoming narrower towards 
their thick base which is fixed to an elevation on the rachis; when the scales fall 
the stipe and rachis become muricate. In the entire absence of hairs the species 
recalls Eudryopteris, from which it is considerably different, f. inst. in the not 
decurrent secondary ribs and by the whole lamina being fertile; scarcely one 
sterile segment or lobe is to be found. . 
D. K. D. Vidensk. Selsk. Skr., naturvidensk. og mathem. Afd. 8. Rekke, VI, 1. 16 
