92 CVIII. EUPHORBIACER. [ Petalostigma. 
16. PETALOSTIGMA, F. Muell. 
(Hylococcus, R. Br.) 
owers moncecious, ? n axilary clusters or the females solitary. | 
Male Fi uber rianth of 4 to 6 imbricate calyx-like segments. Glands | 
none, ae united in a central column without. an 
ci ees ovary, the filaments shortly free ; 
parallel a o opening longitudinally in 2 valves. Female fl. : Perianth 
as in the males, but the segments narrower and very deciduous. Ovary - 
carp, separating into 4 or 2-valved and spuriously 2-celled cocci. - 
Seeds oblong, 4i 
wanting ?).—A tree. Leaves alterna ate, entire. Stipules minute or 1 
none. Iptiessesnon of Phyllanthus, but the flowers larger than i 
usual in that genus. 
genus consists of a single species, endemic in Australia. The flow: said E 
to " bietet but pro gebe e| Serene branches or eaa at different times, | : 
for our specimens are all unis E 
l. P. quadriloc NICE F. Muell. in Hook. em Journ. ix, 17/08 
small or inoderatt sized tree, the branches and Neben of the leaves 
H 
Male flowers several together, on ver t pedicels. a 
ments orbicular or broadly obovate, ae -pubescent or Hes Mae. a 
1 Stamina 
re or 
ess undulate and crenate. Fruit oran porum often 4 in. diameter. 
Seeds slightly Mp nme smooth.— Muell. Arg. in DC. Prod. xv. i | 
273; Hulococcus eus, R. Br. in | em Ie. i rea .; Mitch. Trop. Aust. | 
389 ; Petalostigma 1 rüber Muell Arg. l.c. 974; P. Australianum, — 
Baill. Adans. vii. 356, t. 2. : 
alia. N.W. Coast, A. Cunningham ; islands of the Gulf of Carpentarit 
He rnheim's Land, F. Mueller r; - kä interior, lat. 20°, M*Douall Stuart; 
Port pes ue n. 94, 298, 299, "xi 
d. road Soun : S gnd deavour river and Moreton Bay, 4 
river, Mitchell; Roekinitiptoii Port Denison, Edgecombe Bay; 
Dali we dni) Albany i island, W. Hill. 
S. Wales. Clarence river, Beckler, c. Moore ; N. S. Wales woods, London 
j iol 1862, n. 90. : 
ar. giabrestons” Leaves elliptical-lanceolate, 14 to nearly 2i n. long, becom!ng | 
early glabrous, and the ovary and fruit much less villous than in the tvpical form o 
ite gla BAI; Claren 
ver, C. Moore; London Exhibition, 1862, n. 91; Cape Sidmouth, Curdie. 
The species varies exceedingly in the shape * i leaves, the size of the flowers. and 
