Published June 22, 2016
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Dracontium nivosum (Lem.) G.H.Zhu (Araceae): range extension from Amazonia to a brejo forest refugium in Northeast Brazil confirmed
- 1. Universidade Federal do Piauí, Herbário Delta do Parnaíba-HDELTA, Campus Ministro Reis Velloso, Av. São Sebastião 2819, CEP 64202-020, Parnaíba, PI, Brazil, Brazil
- 2. Universidade Federal do Ceará-UFC, NPDM-LOE, Núcleo de Pesquisa e Desenvolvimento de Medicamentos (NPDM), Laboratório de Oncologia Experimental (LOE), Porangabussu, Rua Coronel Nunes de Melo 1000, CEP 60430-275, Fortaleza, CE, Brazil, Brazil
- 3. Universidade Estadual Vale do Acaraú - UVA, Curso de Ciências Biológicas, Av. da Universidade, Campus Betânia, Sobral, CE, Brazil, Brazil
- 4. Honorary Research Associate, Herbarium, Royal Botanic Gardens Kew, Kew Green, Richmond, Surrey TW9 3AE, United Kingdom, United Kingdom
Description
The 558 km range extension of the Amazonian aroid Dracontium nivosum (Lem.) G.H.Zhu into semi-arid Northeast Brazil is confirmed. This species occurs in Ceará in threatened fragments of brejo forest at ca. 580–870 m elevation. An illustrated taxonomic description is provided. The species' Extent of Occurrence (EOO) is estimated as 356,392 km2 (meets Least Concern); the Area of Occupancy (AOO), 60 km2 using a 2×2 km cell (Endangered). Within Ceará the EOO is 41.4 km2 (Critically Endangered) and the AOO is 16 km2 (Endangered).
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