Montigena(Fabaceae), a new genus endemic to New Zealand

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Abstract
Montigena, a new monotypic genus, is distinguished from Swainsona by a strongly rhizomatous habit, terminal innovation shoots, stems with persistent pith, vessel elements with helical thickenings, well developed ray parenchyma, and slender and flexuose phloem fibres. A new combination Montigena novae‐zelandiae replaces Swainsona novae‐zelandiae as the name for this legume that is endemic to the dry eastern mountains of the South Island of New Zealand, where it grows on partially stable screes. A botanical description is presented, followed by detailed notes on growth habit, rhizome anatomy, leaf anatomy, distribution, and habitats, with an assessment of conservation status.