Osmund chamomile has spread in Nansha zone, more attention would be paid to.

Although leaf photosynthesis of this weed is of the C3 type, a C4-like vascular bundle full of chlorophyll was observed in the main vein of the leaf and young stems.

After local Averrhoa carambola was treated with extract of M. micrantha, the fruit damage rate was below 50%, when the damage rate of CK was over 80%.