Flora of Papua New Guinea 
Conservation international New Ireland RAP Survey 
1 0023 Vitaceae 
Cayratia japonica (Thunb.) Gagn. 
New Ireland, near the junction of the Niagara and Weitin Rivers (site 
2), mature lowland rainforest in and around transect 1, elev. 240 m, 
near 4° 30.210’ S, 152° 56’ 242” E. 
with coll sequence starting Archidendron 9904; herbaceous climber 
along abandoned loghaul track; stems green, 6-angled, glabrous or 
puberulent, tendrils leaf-opposed, usually bifid, lacking adhesive disks; 
leaves alternate, lax, pedate, fleshy or subcoriaceous, adaxially dark 
dull green, glabrate, abaxially light green, puberulent with curved hairs 
mainly on the costa; petiole ca 13 cm, slightly swollen and geniculate 
at the stem, glabrate, marginate; leaflets broadly elliptic, to ca 14.5 x 8 
cm, acuminate, margin serrate, base acute; laterals ca 8-10 arcuate 
pairs, irregularly areolate; inflorescence leaf-opposed, corymbiform, to 
ca 25 cm, long-peduncled; flowers pale green, bisexual, tetramerous; 
calyx truncate; petals free, valvate; disk fleshy, raised, adnate to the 
ovary; style simple and columnar, stigma not expanded; berry 
depressed-globose, green, immature, exocarp glabrous, summit 
crowned by the persisting style. 
flowers bottled. 
coll: W. Takeuchi & J. Wiakabu 10023 
date: January 1994 
det.: WT 
Flora of Papua New Guinea 
Conservation International New Ireland RAP Survey 
1 0024 Cyperaceae 
Cyperus diffusus Val. 
New Ireland; near the junction of Malmai Creek and the Weitin River; 
selectively logged lowland rainforest; elev. 150 m; centered around 152 
deg. 57.825’ Ex4deg. 33.271’ S (coll, site 1). 
clumped herb on abandoned loghaul track; leaves c. 15 - 16, linear, 
dull yellow or light green on both surfaces; flowering stalk trigonous; 
inflorescence anthelate, spikelets long-elliptic and brown. 
coll: W. Takeuchi & J. Wiakabu 10024 
date: January 1994 
det.: WT 
