Journal
SYSTEMATIC BOTANY
Volume 45, Issue 1, Pages 69-74Publisher
AMER SOC PLANT TAXONOMISTS
DOI: 10.1600/036364420X15801369352315
Keywords
Arthrostylidiinae; Brazilian Atlantic Forest; endemism; taxonomy; woody bamboos
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Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior of Brazil (CAPES) [001, 88887.194402/2018-00]
- FAPESB (Fundacao de Amparo a Pesquisa do Estado da Bahia) [PIE0009/2016]
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico) [562349/2010-3, 401526/2014-3]
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Merostachys delicatula, a new species recorded thus far only from the montane Atlantic forest of southern Bahia, is described and illustrated here. Comments on its taxonomy, distribution, habitat, and phenology are presented. Among the narrow-leaved congeners occurring in Bahia, the new species is most similar to M. leptophylla. It is distinguished by having internodes glabrous to scabrous (vs. glabrous in M. leptophylla); internodes with an infranodal band of trichomes (vs. absent); culm leaf sheaths abaxially scabrous (vs. glabrous); upper glumes 1.2-2.1 mm wide (vs. 3.5-4 mm); anthecia dull (vs. shiny); lemmas 1.5-2.7 mm wide, abaxially pubescent (vs. ca. 4 mm, glabrous); and paleas 1.2-2.3 mm wide (vs. ca. 4 mm). We also provide an assessment of the conservation status of the new species and a geographic distribution map for both species.
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