368 JACK’S MALAYAN PLANTS, 
numerous. Female: Capsule with three, equal, parallel, 
rounded wings, three-celled. 
BEGONIA GENICULATA. W. J. 
Caule geniculato, foliis ovato-oblongis denticulatis acu- 
minatis glabris, pedunculis divaricato-dichotomis, floribus 
superioribus masculis dipetalis, inferioribus foemineis, capsule 
alis zequalibus obtusangulis. 
Rumput Udang Udang. Malay. 
Sumatra. 
Caulescent ; stems smooth, compressed, channelled, jointed, 
thickened at the articulations. Leaves alternate, petiolate, 
semicordate at the base, ovate-oblong, acuminate, denticulate, 
smooth. Peduncles oppositifolious, dichotomous, divaricate, 
many-flowered, lower flowers female, upper male. There 
is often a female flower from the axil. Male: Perianth 
two-petaled, white. Stamina numerous; anthers oblong, 
broader above. Female: Capsules long, three-winged, 
wings obtuse-angled, equal, smooth. 
Oss. The leaves of this plant are used by the natives for 
cleaning and taking out rust from the blades of their Creeses. 
It has considerable resemblance to the preceding species. 
SONERILA HETEROPHYLLA. W.J. 
Foliis oppositis altero minimo reniformi altero oblongo 
acuminato versus basin attenuato ibique semicordato supra 
glabris, pedunculis axillaribus brevissimis paucifloris. 
Found at Tappanuly on the west coast of Sumatra. 
Stem creeping, round, covered with appressed scaly hairs. 
Leaves opposite, almost sessile, one very minute and reniform, 
the other about three inches long, oblong, broader above, 
` acuminate, narrowing to the base, semicordate, the outer lobe 
forming a rounded auricle, obsoletely denticulate or nearly 
entire, a small spinule on the denticulations; three-nerved, 
smooth above, whitish beneath, with some hairs on the 
