|Zamia brasiliensis Calonje & Segalla|
in Segalla & Calonje, 2019.
Zamia brasiliensis Calonje & Segalla, a new subterranean-stemmed species of Zamia (Zamiaceae) from Mato Grosso and Rondônia, Brazil, is described and illustrated. It is compared to two morphologically similar species with adjacent geographic distributions: Z. boliviana from the Cerrado biome, and the Amazonian species Z. ulei. The new species shares unarmed petioles with Z. boliviana but is readily distinguishable by its much broader leaflets. Z. brasiliensis has leaflets somewhat resembling those of juvenile individuals of Z. ulei, but the latter species is easily differentiated by the presence of prickles on its petiole.
Keywords: Cerrado-Amazon Rainforest, Cycad, Endangered species, Endemic species, Gymnosperm, IUCN Red List
|FIGURE 1. Vegetative characteristics of Zamia brasiliensis. A. Adult individual. B. Leaf, C. Middle leaflet. D. Cataphyll. E. Base of unarmed petiole.|
Zamia brasiliensis Calonje & Segalla sp. nov.
Diagnosis:— Zamia brasiliensis is distinguishable from Z. boliviana in having much broader leaflets and from Z. ulei in having unarmed petioles.
Etymology:— Zamia brasiliensis is the only species of Zamia endemic to Brazil. The specific epithet refers to its distribution which is restricted to this country.
Rosane Segalla and Michael Calonje. 2019. Zamia brasiliensis, A New Species of Zamia (Zamiaceae, Cycadales) from Mato Grosso and Rondônia, Brazil. Phytotaxa. 404(1); 1–11.