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25 February 2020 A New Species of Merostachys (Poaceae: Bambusoideae: Bambuseae) from the Montane Atlantic Forest of Southern Bahia, Brazil
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Abstract

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.

© Copyright 2020 by the American Society of Plant Taxonomists
Ray S. Andrade, Evandro M. Pianissola, Ronaldo Vinícius-Silva, Aline C. da Mota, Lynn G. Clark, and Reyjane P. de Oliveira "A New Species of Merostachys (Poaceae: Bambusoideae: Bambuseae) from the Montane Atlantic Forest of Southern Bahia, Brazil," Systematic Botany 45(1), 69-74, (25 February 2020). https://doi.org/10.1600/036364420X15801369352315
Published: 25 February 2020
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