From backside postcard:
Sonneratia species grow in oxygen-poor sediments. The underground root system needs and demands oxygen, the soil is not able to support the underground root system with enough oxygen. Therefore, the underground root system outgrows aerial roots that grow vertically up to the air above the soil. The cone roots have numerous lenticels that enable gas exchange directly above the surface. The cone roots provide the additional needed oxygen which can't be taken from the soil.
The Sundari tree (Heritiera fomes), from which Sundarban derives its name, breathes through pneumatophores or breathing roots that look like stilts. It is spread out in an area of almost 1,330 square kilometer in India.
2X Bal Gangadhar Tilak
Sardar Vallabhbhai Patel
The 50th Anniversary of the State of Haryana