Omal Arachchige

Trypetheliopsis hirsuta is a species of lichen-forming fungus in the family Monoblastiaceae. It grows on smooth tree bark in Sri Lankan rainforests and is distinguished by the dense covering of stiff black bristles on its spore-producing structures, a feature alluded to in its name. It is known only from its original collection site at Morningside, Sri Lanka.

Allographa weerasooriyana is a species of script lichen in the family Graphidaceae. Described in 2019 from specimens collected in the tea estates of Sri Lanka's Sabaragamuwa hill range, this bark-dwelling lichen is named in honour of Sri Lankan botanist Aruna Weerasooriya. The species is distinguished by its pale, warty crust marked with narrow, branching black slits that have characteristically bumpy borders, and it is known to occur only in montane tea plantation areas in Sri Lanka.

Allographa jayatilakana is a species of script lichen in the family Graphidaceae. Described in 2019 from a specimen collected on ornamental fig trees in Colombo, Sri Lanka, this bark-dwelling lichen is named in honour of Jayatilaka Bandara Weerakoon, father of one of the describing authors. The species is recognized by its distinctive yellow to orange powder that coats the edges of its narrow, black, slit-like fruiting bodies, and is currently known only from the type locality in urban Sri Lanka.

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