In a landscape where the attention of the world often settles on the large and the visible, Weerakoon’s team turned their focus toward the "less-charismatic" inhabitants of the rainforest. Working in partnership with Dilmah Conservation and the Herpetological Foundation of Sri Lanka, they documented 23 new lichen species, including the Polymeridium fernandoi, which survives on the rough, damp bark of the lowland woods. For Weerakoon, a senior curator at the Natural History Museum in London, this work fills a void left by 19th-century botanists such as William Nylander, who first attempted to catalog the island's flora long before modern conservation was a necessity.
The discovery extends beyond the fungal kingdom. The researchers identified 12 new species of frogs, including the Pseudophilautus dilmah, or Dilmah Shrub Frog. These amphibians possess a singular biological grace: they undergo direct development, emerging from their eggs as fully formed, miniature adults, bypassing the vulnerable tadpole stage entirely. This specialized existence allows them to thrive in the varied microclimates of the Sinharaja, provided the forest remains intact.
The geography of these finds is thick with history. Several species were located near the sites where the island’s first tea bushes were planted in 1867. The proximity of these rare creatures—such as the Sinharaja Tree Snake—to commercial landscapes underscores the delicate balance required to maintain the island's ecological integrity. By publishing Fascinating Lichens of Sri Lanka, Weerakoon has provided the first comprehensive guide of its kind for the nation, a gesture of care for the small things that hold the forest together.
The team sought out the species that lack scientific data, focusing on the essential fabric of the ecosystem that usually eludes the public eye.
This systematic cataloging is more than a list of names; it is a defensive wall built of data. In documenting the presence of these species, the team ensures that their habitats cannot be cleared through ignorance. The work continues a tradition of patient observation, proving that even in a world that feels thoroughly explored, there are still secrets to be found by those willing to look closely at the bark of a single tree.