Perrierosedum madagascariense

Perrierosedum madagascariense is a small perennial shrub growing 50–80 cm (20–31 in) tall. The branches are hairless and quadrangular. The fleshy leaves are sessile, borne opposite one another, measuring 2.5–5 cm (0.98–1.97 in) by 1.5–2.5 cm (0.59–0.98 in) with finely toothed margins. The inflorescence is a terminal corymbose cyme bearing three to ten flowers. The flowers measure approximately 10 mm (0.39 in) across and are hexamerous or, rarely, pentamerous. The petals are white with a red to orange tint and purple veins.

Perrierosedum madagascariense is known only from Andringitra Massif in the Haute Matsiatra and Ihorombe regions of south-central Madagascar. It grows on rocky outcrops at altitudes of 1,600 m (5,200 ft) to 2,659 m (8,724 ft).

Sedum madagascariense was described by French botanist Joseph Marie Henry Alfred Perrier de la Bâthie in 1923. S. madagascariense was placed in Sedum section Perrierosedum, named in honour of Perrier de la Bâthie, in 1930 by Alwin Berger. Sedum sect. Perrierosedum would later be elevated to genus by Japanese botanist Hideaki Ohba in 1978, re-designating the species Perrierosedum madagascariense. This species is known as maroatody in Malagasy.