Unpublished Notes on the Species of Alicia—W. R. Anderson, June 2008

Alicia anisopetala (Adr. Juss.) W. R. Anderson—Amazonian Peru and Bolivia, central and southern Brazil (Acre and Maranhão south to Paraná), Paraguay, and northeastern Argentina. Lamina abaxially densely and persistently tomentose (rarely glabrescent in age), the hairs stalked, with their crosspieces non-parallel, straight to twisted; petals strongly dimorphic, the posterior petal much larger than the lateral petals, often nearly twice as long and much broader; samara tomentose or loosely sericeous to glabrate, 2.8–5 (–6.5) cm across, mostly less than 4 cm.

Alicia macrodisca (Triana & Planch.) W. R. Anderson—Widespread in Amazonian South America and adjacent areas (Colombia, Venezuela, Guyana, Suriname, Brazil, Ecuador, Peru, and Bolivia). Lamina abaxially sericeous to glabrate, with the hairs sessile, straight, and parallel; petals subequal to strongly dimorphic; samara tightly sericeous to glabrate, 4–7.5 cm across. There is much variation in this species. Southern populations (e.g., in Bolivia) have the petals dimorphic as in A. anisopetala, although the petals are not as large and the difference between the posterior and lateral petals is not as dramatic; elsewhere (e.g., in Venezuela) the five petals are subequal. There is also great diversity in size of the samaras, and in a few populations the lateral wings are distinct at the base, whereas in most populations they are continuous. Thorough study of A. macrodisca through its range may make it possible to recognize meaningful segregates.