152 THE FLORA OF SINGAPORE. 
MONOCOTYLEDON ES. 
HYDROCHARIDEX. 
Hydrilla verticillata Casp. A common water weed in ditches 
Tanglin, Chan Chu Kang. 
Blyxa on Ridl. An aquatic with grassy leaves. Tang- 
n, Chan Chu Kang. 
Enhalus Koenigii Rich. “Setul.” A marine plant with long 
strap-like leaves. The male flowers are very small and 
white, borne in a pair of large green boat-shaped bracts 
оп the end ofa long stalk. When fully developed the 
ж гезне rises to the surface, and the Howers break 
and float away till they come in contact with a female 
flower which they fertilise. The sea is sometimes sprin- 
kled all over with them. The female flowers are solitary 
inthe bracts. After fertilization the stalk contracts into a 
spiral and the fruit is drawn down to the bottom of the 
sea to ripen. It is ovoid, green and hairy, about 14 inch - 
long. Malay children eat it. The EE ( Halicore ) 
lives mostly on the leaves of this plant. It is very abun- 
dant in shallow bays in the Johore Strait, round ee 
Mati and wherever the sea is shallow enough for 
Haiophila ovata Gaud. А small creeping marine plant with 
obovate leaves. Abundant in shallow bays in mud. 
Changi, Blakang Mati. 
BURMANNIACEAX. 
Burmannia coelestis Don. * Sisik Naga.” А slender little plant 
with blue urn-shaped flowers, in grassy spots, comm 
Tanglin, Pasir Panjang, Mt. Faber. 
В tuberosa ман А m эби saprophyte, usually almost 
completely buried the ground. Flowers white 
with yellow corolla lobes, scented of cowslips. Damp 
