Tahina Razafindrahaja

Syncesia madagascariensis is a rare species of crustose lichen in the family Roccellaceae. It is found in Madagascar. This lichen forms large, continuous patches up to 15 cm across on tree bark, with a creamy surface that becomes increasingly cracked with age and distinctive flattened, disc-shaped fruiting bodies that show radiating ridge patterns. It is known only from montane forests near Ambositra at 1705 metres elevation, where it grows on tree trunks in forests dominated by myrtle family trees.

Visit the page for more details.

Visit the page for more details.

Dirina madagascariensis is a species of crustose lichen in the family Roccellaceae. Found in southern Madagascar, it was formally described as a new species in 2013 by lichenologists Anders Tehler, Damien Ertz, Dorothee Killmann, Tahina Razafindrahaja, Emmanuël Sérusiaux, and Eberhard Fischer. The type specimen was collected by the second author from Taolagnaro (Fort-Dauphin). It has been recorded growing both on rocks (usually calciferous) and on the bark of various trees and shrubs. The lichen has a creamy white to white-greyish thallus (0.1–1.5 mm thick) with a chalk-like medulla. Its