Emilia species- Thane

¿ Emilia ? sp.
Place, Altitude: along Ghodbunder Road near Gaimukh, Thane (about 85 ft asl)
Date, Time: 11 NOV 07 02::44pm
Habitat: wild, along roadside
Habit: herb, not sure of height, flower-head about 3 - 4 mm across

This lone photo may not help to arrive to species level ID. Will be glad to know genus.
Can be Emilia sonchifolia
Any leaves?
That is the tragedy, ... !
Thus even if the ID is known to genus level it will be sufficient for me to label the photo and remain content.