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In page Madeira:

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In the south, little is left of the indigenous subtropical rainforest that once covered the island[citation needed] (the original settlers set fires to clear the land for farming) and named it (madeira means "wood" in Portuguese). However, in the north, the valleys harbor native trees. These laurissilva forests, notably those on the northern slopes, are designated as a UNESCO World Heritage Site. Madeira's paleobotanical record reveals that laurissilva forest has existed for at least 1.8 million years.[1] Critically endangered species such as the vine Jasminum azoricum[2] and the rowan Sorbus maderensis are endemic. The Madeiran large white butterfly was an endemic subspecies of the large white that inhabited the laurissilva forests but has not been seen since 1977.