The exotic invasive weed, Lantana camara, has two natural varieties, yellow and
white, in the study area. The two varieties bloom simultaneously, seasonally or
year-long, depending on the availability of soil moisture. In both varieties, the
aggregated flat-topped flowers display color changes in the corolla and remain in
place for several days. Still nectar is available only in day one flower, while older
flowers lack nectar and enhance the attraction of flowers to the intended flower
foragers. Various butterflies visit flowers during the daytime and collect nectar
only from day one flowers. The study indicated that this weed is a potential and
critical source of nectar for butterflies in all areas of its distribution.
Keywords: Invasive weed, yellow variety, white variety, corolla color shift,
butterflies.
