1) Like some aquatic plants 2) Rising above a water surface 3) Rising from water 4) Rising out of water 5) Standing out above the water 6) Standing out of the water 
• (a.) Standing out of, or rising above, water.
Standing out of or rising above a surface as an aquatic plant with flower stalk emersed. ... (09 Oct 1997) ... 
Adapted to grow out of water.
E·mersed' adjective [ Latin emersus , past participle See Emerge .] (Botany) Standing out of, or rising above, water. Gray. 
risen or standing out of water, surrounding leaves, etc.