Flora of Papua New Guinea 
Conservation International RAP Survey 
9991 Fabaceae 
cf. Oxyrhynchus 
New Ireland; near junction of Weitin and Niagara Rivers, lowland 
rainforest at elev. c. 240 m; vicinity of transect 1 , colls, near 4° 30.21 0’ S, 
152° 56’ 242” E. 
with sequence starting 9904; herbaceous climber on streambank; stems 
terete, green, glabrate; leaves alternate, lax, coriaceous or somewhat 
firm, widely scattered simple hairs on veins and near the lamina base, 
adaxially dark shiny green, abaxially medium shiny green, leaf pinnately 
trifoliolate; petiole ca 14 cm, swollen at the stem, terete or grooved, 
minutely stipulate; rachis ca 2.5 cm, typically grooved; petiolules ca 1 cm, 
puberulent, stipels teethlike; leaflets ovate, typical 10.5 x 7.25 cm, apex 
acuminate, base rounded; venation 3 or (5)-digitate, midrib usually with 1 
pair of arcuate laterals, reticulum irregular; inflorescence axillary, ca 50 
cm long, pedunculate, racemose, axes glabrescent, ebracteate; flowers 
lax, inserted on swollen glandular nodes; calyx zygomorphic, purple, 
glabrous, margins sometimes ciliate, lobes 5, ca triangular, dorsal 2 
slightly broader than the ventral 3; standard 13 x 22 mm, oblongish, 
emarginate, off-white, swollen at the petal insertion, turned through 90°; 
keel clawed, broadest at the middle, apically narrowed, cream; stamens 
diadelphous, 9+1, staminal column with paired lobules at the base; ovary 
puberulent, coarsely hairy on the upper side; style reflexed 180°, the 
base thickened and glabrous, distally with an indument of spreading 
hairs; style weakly dilate, hairy. 
coll. W. Takeuchi & J. Wiakabu 9991 
date: Jan., 1994 
Flora of Papua New Guinea 
Conservation International RAP Survey 
9992 Euphorbiaceae 
Macaranga dioica (Forst.) Muell.-Arg. 
New Ireland; near junction of Weitin and Niagara Rivers, lowland 
rainforest at elev. c. 240 m; vicinity of transect 1, colls, near 4° 30.210’ S, 
152° 56’ 242” E. 
with sequence starting 9904; treelet, branchlets terete, blue-green, hairy 
and granular; stipules brownish-green, free, acute-acuminate, curled, 
hairy, apiculate, persisting; leaves alternate, spiral, thickly herbaceous, 
hairy on veins, adaxially dark dull green, abaxially dull light green, 
triangular-ovate or 3-lobed, apices caudate (on the lobes also), margin 
very minutely and laxly setose, base rounded or truncate, provided with 4- 
6 flat glands on upper surface near the petiole, the glands elliptic, ca 3 
mm, arranged in a half-circle; typical blade 22 x 17 cm; petiole ca 15 cm, 
red to pink, terete, hairs spreading, also with farinose glands; venation 
with 3 basal costae, midrib 6-8 penninerval, lateral costae with the branch 
nerves secund, reticulum manifest, crossing nerves scalariform, main 
veins granular and hairy, prominulous on both sides, intervenia minutely 
pitted on undersurfaces; inflorescence axillary, to 25 cm, paniculate, 
pedunculate, hairy and granular throughout; flowers unisexual, (species 
dioecious, female not seen), male flowers yellow-green, glomerate, 
minute, subtended by acute bracts with entire margins, buds globose, 
hairy, stamens ca 10, anthers 4-locellate. 
coll. W. Takeuchi &J. Wiakabu 9992 
date: Jan., 1994 
det.: WT 
