A peer-reviewed open-access journal PhytoKeys 75: 119–144Systematics (2016) of Simplicia Kirk (Poaceae, Agrostidinae) – an endemic... 119 doi: 10.3897/phytokeys.75.10328 RESEARCH ARTICLE http://phytokeys.pensoft.net Launched to accelerate biodiversity research Systematics of Simplicia Kirk (Poaceae, Agrostidinae) – an endemic, threatened New Zealand grass genus Peter J. de Lange1, Rob D. Smissen2, Jeremy R. Rolfe3, Colin C. Ogle4 1 Terrestrial Ecosystems, Science and Policy Group, Department of Conservation, Private Bag 68908. Auckland 1145, New Zealand 2 Allan Herbarium, Landcare Research, P.O. Box 69, Lincoln 7640, New Zealand 3 Te r- restrial Ecosystems, Science and Policy Group, National Office, Department of Conservation, P.O. Box 10420, Wellington 6143, New Zealand 4 22 Forres Street, Whanganui, New Zealand Corresponding author: Peter J. de Lange (
[email protected]) Academic editor: M. Nobis | Received 30 August 2016 | Accepted 28 November 2016 | Published 9 December 2016 Citation: de Lange PJ, Smissen RD, Rolfe JR, Ogle CC (2016) Systematics of Simplicia Kirk (Poaceae, Agrostidinae) – an endemic, threatened New Zealand grass genus. PhytoKeys 75: 119–144. https://doi.org/10.3897/phytokeys.75.10328 Abstract A new species of the New Zealand endemic grass Simplicia, S. felix is described. The new species is segre- gated from and compared with S. buchananii and S. laxa. Simplicia felix occurs mostly in lightly shaded areas of seasonally dry alluvial forest. A distribution map and an assessment of the conservation status of the new species are presented. Genetic variation in the genus was examined, building on previously published work but including additional sampling. Analysis of nrDNA ITS and ETS and plastid trnL intron and trnL–F intergenic spacer sequences show S.