Erratum: A new species of Ceratozamia (Zamiaceae) from Chiapas, Mexico

The genus Ceratozamia or 'horned Zamia' as the name suggests, is largely restricted to Mexico, with an outlying species (C. robusta Miq.) in Guatemala and Belize. Recently a Ceratozamia species has been reported from Honduras (Whitelock, pers. comm.). Much of our knowledge of the distribution of Ceratozamia in its native Mexico is due to the early exploratory work of Chamberlain (1919). In recent years information on the genus has been greatly expanded by workers from Mexico and Italy (Norstog & Nicholls, 1997; see also Balduzzi, De Luca & Sabato, 1981-82 and Moretti & Sabato, 1988). The genus is found mainly in dense moist tropical woodlands, such as cloud-forests, evergreen tropical rain-forests and also in mid-elevation oak/pine forests. Ceratozamia is much like some robust species of Zamia and according to Crane (1988) Ceratozamia, Zamia and the Cuban endemic Microcycas are phylogenetically related. Some Ceratozamia species are basically arborescent with stems rarely more than about 1 m tall, often leaning or curved and rarely branching. Others are semi-hypogeous and often branching. During botanical explorations and conservation studies in the recently established Biosphere Reserve