PAPUAN FERNS. 
75 
minutis et aliis ultra 1 mm longis dense vestita; pinnis utroque latere 
ca. 20, infimis reductis, majoribus brevi-stipitatis, fere horizontalibus, ca. 
2 cm latis, acuminatis, basi truncatis, \ ad costam pinnatifidis ; segments 
rotundatis, subfalcatis, integris, ubique minute pilosis et glandulosis; 
2 vel 3 venis anastomosantibus; soris medialibus; indusiis persistentibus, 
pallidis, setosis, margine glandulifera; sporangis ad annulos nudis, alibi 
interdum sparse setosis ; sporis reticulatis. 
No. 29 4 (type) ; No. 219, mainland opposite Samarai. 
Near D. adenophora G. Chr., but the glandular spot inconspicuous and surfaces 
hairy; and to D. polycarpa Christ, but the attachment of the indusium short and 
the pubescence different; different from most of the D. parasitica group, in the 
glandular indusia. At the base of the frond are one pair of auricles and one 
or two pairs of less reduced pinnae. 
12. D. ( Mesochlaena) polycarpa Christ. 
No. 159. 
Malaya, Polynesia. 
I have sometime favored the recognition of Mesochlaena as a genus, but do 
not now incline that way. It is too difficult to distinguish this plant from 
D. adenophora C. Chr. 
13. D. aquatilis Copel. spec. nova. 
Stipite vix 15 cm alto, fusco, basi nigro, sub lente minute appresso- 
setoso ; fronde ca. 35 cm alta, 10 cm lata, apice 5 cm longo inciso-serrato, 
rhachi minute appresso-setosa ; pinnis remotis, utroque latere ca. 14, 
stipitatis, ca.. 6 cm longis, 7 mm latis, valde acuminatis, basi inaequilate- 
raliter cuneatis, acroscopice aurieulatis, leviter serratis, membranaceis, 
costis et sparsissime venis setosis, lamina glabra, membranacea; venulis 
utroque latere 2 ,vel 3, sat irregulariter anastomosantibus ; soris infimis op- 
posite proximis vel contiguis, superioribus medialibus ; indusio orbiculare, 
sinu manifeste vel saepius occulto. 
No. 182, under flood level of creeks. 
Perfectly intermediate between D. lineata (Bl.) C. Chr. and D. salicifolia 
(Wall.) C. Chr.; the latter sometimes has the pinnae slightly aurieulate. D. 
salicifolia has at least sometimes a rudimentary indusium which seems to have 
been overlooked. 
14. D. prolifera (Retz.) C. Chr. 
No. 128. 
Polynesia to Africa. 
15. D. triphylla (Swtz.) C. Chr. 
No. 822, Mamba. 
Queensland to India. 
16. D. urophylla (Wall.) C. Chr. 
No. 258, not typical. 
Polynesia to India. 
