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seem to be rather confined within the species and it is lo a certain degree of 
value as specific character. The branches can be short or long, simple or again 
forked /D. Eggersii/, erect /D. asterothrix/, horizontal or recurved (D. glochidiata). 
Besides stellate or forked hairs simple, unicellular, longer hairs occur in most 
species; some few species are practically glabrous /D. vivipara, D. paucipinnata/, 
others densely pubescent throughout /D. curta, D. Ghiesbreghtii/. The longer hairs 
are in most species confined to rachis, coste and margins; generally the rachis 
bears as well stellate as simple hairs. Scales are, as a rule, few and mostly con- 
fined to rhizome and lower part of the stipe; rarely small, stellate-pubescent scales 
are also found on rachis and cost beneath /D. monosora, D. lugubris). Glands as 
well as aérophores are always absent. 
The pubescence is the main character of the subgenus, but the species show 
besides other characteristic common features, which can nol be described so clearly 
as to be understood easily by others. Most species are dark-green or greyish- 
green, membranous or chartaceous, rarely thinly herbaceous or rigidly coria- 
ceous, not much divided, the lamina entire, pinnatifid, pinnate or bipinnatifid. 
Bipinnate or decompound species I have not seen. Several species, perhaps the 
majority, are proliferous by buds on the rachis or the rachis is prolongated and 
rooting at the apex. The species of the section Eugoniopteris have impari-pinnate 
lamina. These two characters, proliferous leaves and impari-pinnate lamina, so 
common within Goniopteris, are unknown or, at best, very rare in all other subgenera. 
With regard to venation the species vary not a little, still.a certain uni- 
formity can be pointed out. The venation is in correlation to the degree of cut- 
ting. In deeply cut. pinne the veins, which nearly always are simple, are all free 
with those of the basal pair running to the sinus (f. inst. D. scabra), but more 
often they are connivent to sinus i.e. the lower 1—4 pairs of veins are upcurved 
and run side by side to the sinus, below which they are very often separated by 
a cartilagineous membrane. It is often difficult to state whether the veins are 
connivent or truly anastomosing, i. e. two veins being united into a single ex- 
current branch (nervatio Goniopteridis/. In several species both kinds of venation 
can be found in the same leaf. Seen from the underside the veins often appear 
to be united, while they, seen from above, are found to be connivent but running 
very closely side by side. In several species the lower veins (1—3 pairs) are con- 
stantly united, while other species (f. inst. D. nephrodioides) are very variable in 
venation, some forms having free, others of the same species anastomosing veins. 
Within the second action, Eugoniopteris, we find an unbroken row from free-veined 
forms to D. Ghiesbreghtii and D. meniscioides, the venation of which is perfectly 
meniscioid. 
The species are partly indusiate, partly exindusiale. Large indusia are rare 
/D. paucipinnata, D. venusta/, in most species the indusia are small and more or 
less setose by simple or forked hairs, often very small and only seen in the young 
sori. In some species the receptacle bears long hairs between the sporangia; these 
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