Aichryson dumosum is a critically endangered species of succulent plant of the family Crassulaceae endemic to Madeira.
Aichryson dumosum is a glandular plant up to in height, with reddish purple branches. Flowers are in diagonal, most with 7 petals, in loose summits. Petals , lanceolate, bright golden yellow with a dorsal central rib.
The species is endemic to one single locality on Calheta Municipality, Madeira Island and is estimated to have around 50 to 250 individuals occupying only . It grows in crevices and sheltered areas typical for micro-habitats consisting of an agglomeration of rocks.
It is mainly threatened by invasive species, trampling, fires, droughts and landslides.