Discovered by Swiss explorers Walter Röösli and Ralph Hoffmann in 1995, this new aloe was described, along with another new species, in the C&SJ (Vol. 74: 116-120, 2002). It is an attractive ally of A. parallelifolia (ISI 2000-44), differing in its leaves bearing prominent teeth on the leaf margins and in its showy capitate inflorescences of red buds opening yellowish-orange. The species is known only from a shallow valley of the quartzitic sandstone that composes the Itremo Mountains. HBG 93960, from controlled pollination of Röösli & Hoffmann 4395, coll. Dec. 4, 1995, at 1700 m on the Col d’Itremo, Madagascar. $14.
Published in the Cactus and Succulent Journal, Vol. 78 (2), March - April, 2006