Bombax ceiba, the silk cotton tree, (শিমলু in Ahom, শিমুল in Bangla, सेमल in Hindi) is the perfect symbol of spring. It sheds its leaves in winter, and produces red flowers in spring before it sprouts new leaves. In May, as the season of vasant shades into the heat of grishma in the northern plains of India, the fruits of silk cotton burst open and release the seeds centered in feathery gliders of silky thread that give the tree its name. That is a memory from my childhood; I haven’t been in the appropriate place and time since I finished my school.
So, when we came down from the middle heights to the plains, I was impressed by this treebeard, a giant standing as tall as the canopy on the higher slope on the far side of the Darjeeling Himalayan Railway track. It could have been 50 meters in height; I could reach a bit more than a fourth of the way around the trunk with my arms. The buttressing roots reached above my head. The only way I could take a photo was to make a vertical panorama. The tree grows above the canopy in order to catch the wind it needs for seed dispersal.
The wide dispersion across India of this native of rainforests made me believe that its origins are South or South-East Asian. Unfortunately, I could see very little study of its genomics and biogeography from this region. There has been intensive study in China in recent years, where it was imported in historical times from northern Vietnam (its flower is a symbol of the city of Guangzhou). I wonder when it reached Australia; it is pre-Colonial. What is the native Australian lore about it?