|
|||||
|
|
A new species of Ceratozamia (Zamiaceae) from Oaxaca, Mexico with comments on habitat and relationships |
|
| Authors: | ANDREW P. VOVIDES ,MIGUEL A. PÉ REZ-FARRERA,JORGE GONZÁ LEZ-ASTORGA, CARLOS IGLESIAS |
| Affiliation: | Laboratorio de Biología Evolutiva de Cycadales, Depto de Biología Evolutiva, Instituto de Ecología, A.C., Apdo Postal 63, Xalapa, Veracruz, Mexico; Escuela de Biología, Universidad de Ciencias y Artes de Chiapas, Libramiento Norte Poniente s/n, Tuxtla Gutiérrez, Chiapas, Mexico; Laboratorio de Genética de Poblaciones, Depto de Biología Evolutiva, Instituto de Ecología, A.C., Apdo Postal 63, Xalapa, Veracruz, Mexico; Jardín Botánico Fco. J. Clavijero, Secretaría Académica, Instituto de Ecología, A.C., Apdo Postal 63, Xalapa, Veracruz, Mexico |
| Abstract: | Ceratozamia chimalapensis sp. nov. is described and illustrated. It is related to C. mirandae Vovides, Pérez-Farrera & Iglesias from Chiapas, but differs in trunk and peduncle size as well as in diameter of both megastrobili and microstrobili. Petiole, megasporophyll and indument colour also differ from that of C. mirandae . Ceratozamia chimalapensis forms part of the C. norstogii D.W.Stev. species complex, a group of ceratozamias with narrow leaflets growing in the herbaceous layer of oak forests in southern Mexico. These forests were severely affected by forest fires during 1998 and we recommend an IUCN Red List Category of CR B.1. Speciation in Ceratozamia has been discussed in the light of floristic refugia. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society , 2008, 157 , 169–175. |
| Keywords: | Cenozoic Cycad endangered species floristic refugia Mesoamerica neotropical forests species complex |