Flora of Crater Mt., Papua New Guinea 
Lae National Herbarium 
11686 Thelypteridaceae 
Pneumatopteris cf. sogerensis (Gepp) Holttum 
but keys to P. rodigasiana 
Chimbu (Simbu) Province; Crater Mt. Wildlife Management Area, 
near Haia village, track to Mt. Widau; colls, centered on 6° 43’ S, 
145° 00’ E; hill forest with anthropogenic disturbance, altimeter 
elev. 2500’ (760 m). 
colls sequence 11684-11707; terrestrial fern, ascending; caudex 
compact, enveloped with black fibrous roots; stipe robust, 
furrowed, black at the base, otherwise dark green with pale 
green aerophore lines, vasculature of 2 lateral strands uniting 
upwards into a U-shape; frond pinnate; lamina herbaceous, dull 
green, decrescent, glabrous between the veins, underleaf not 
glandular but pustular-blistery in sicco; costae grooved on upper 
side; leaf sinuses with small teeth; sporangia and indusia 
glabrous. 
Pawaian tokples name = ‘opolu’. 
coll: W. Takeuchi 11686 
date: March 6, 1997 
det.: WT 
Flora of Crater Mt., Papua New Guinea 
Lae National Herbarium 
1 1 687 Thelypteridaceae 
Chingia imponens (Ces.) Holttum 
keys to this result on Holttum 
Chimbu (Simbu) Province; Crater Mt. Wildlife Management Area, 
near Haia village, track to Mt. Widau; colls, centered on 6° 43’ S, 
145° 00’ E; hill forest with anthropogenic disturbance, altimeter 
elev. 2500’ (760 m). 
colls sequence 11684-11707; ascending terrestrial; stout compact 
caudex with numerous orange-brown scales; stipe robust, 
greenish-brown with black prickles, channelled, basal scales 
hairlike, margins setiferous, vasculature of 2 lateral strands uniting 
upwards into a U-shape; fronds pinnate, not decrescent, costa 
grooved above, underside with sparse acicular hairs; lamina shiny 
green, sinus tooth present; sporangia glabrous, exindusiate. 
Pawaian tokples name = ‘opolu’ (same name as Pneumatopteris 
11686). 
coll: W. Takeuchi 11687 
date: March 6, 1997 
det.: WT, 11/97 
