76 
Descriptive Notes on Papuan Plants. 
GLEICHENIACE^. 
Gleichenia Hermanni. 
R. Brown, Prodr. PI. Nov. Holl. 161. 
Fly-River ; D’Albertis, 
FILICES. 
Acrostichdm aureum. 
Linne, Spec. Plant. 1069. 
Port Moresby ; Goldie. 
Acrostichum drynaroides. 
Hooker, Spec. Pilic. v. 282 ; var. sessilis. 
Fly-River ; D. Albertis. 
I have not ventured to describe this as a new species^ not having the 
advantage of comparing the typical plant. From that as described ours 
seems to differ in somewhat smaller size, and more particularly in having 
the lowest portion of the frond cleft only into short and blunt lobes, 
the fronds with their very dilated base being* almost sessile, thus far 
resembling the sterile frondlets of Polypodium quercifolium and P. rigid- 
ulum in manner of growth and reminding also of the mode of attach- 
ment of the Platyceriums. The rachis of the Papuan plant furthermore 
does not secede with great readine.ss from the frond. Unless the frond 
narrows into an attenuated winged base under changed circumstances 
or perhaps in older plants, then ours can be raised to a separate specific 
position under the variety-name meanwhile adopted. The frond is 
occasionally destitute of terminal fertile pinme. 
Platycerium grande (J. Smith in Hook. Journ. iii. 402) was found in 
New Guinea by Zippelius. 
Dicksonia Papuana. 
(Sect. Dennstsedla.) 
Rachis and racheoles along the upper side somewhat tomentose ; 
pinnae numerous, protracted into a serrated long acumen j pinnules 
ohlong-lanceolar, serrulated^ slightly falcate, at the base truncate, 
chartaceous, shining and glabrous on both sides, vividly gTeen beneath; 
sori minute, exserted; involucre almost cupshaped ; inner valve very short 
or obliterated. 
Fly-River; D’ Albertis. 
