Oncorachis and Sclerochlamys, two new segregated genera from Streptostachys (Poaceae, Panicoideae, Paniceae): a revision based on molecular, morphological and anatomical characters

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Abstract:

Generic boundaries of the South American genus Streptostachys (five species) are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical and molecular characters two new genera are proposed, Oncorachis based on Streptostachys macrantha and S. ramosa, and Sclerochlamys for Streptostachys rigidifolia. The phylogenetic position of the new genera and Streptostachys within Paniceae is evaluated.

Keywords: ONCORACHIS; PANICEAE; PANICOIDEAE; PHYLOGENY; SCLEROCHLAMYS; STREPTOSTACHYS; TAXONOMY

Document Type: Research Article

Affiliations: 1: Instituto de Botánica Darwinion, Labardén 200, Casilla de Correo 22, B1642HYD, San Isidro, Buenos Aires, Argentina;, Email: ssede@darwin.edu.ar 2: Instituto de Botánica Darwinion, Labardén 200, Casilla de Correo 22, B1642HYD, San Isidro, Buenos Aires, Argentina 3: Cátedra de Botánica Agrícola, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina

Publication date: May 1, 2009

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