editorial

believed to be what was known in NZ as S. "blue" (pers. comm. PB Heenan 2014)

editorial

Although POWO synonymises Sisyrinchium rosulatum with S. micranthum, BiotaNZ is maintaining both as distinct taxa until compelling evidence emerges suggesting that these species are the same taxon (BiotaNZ editor 2024): S. rosulatum and S. micranthum—look very similar except for their flowers and fruit. These plants are very similar, genetically hard to separate, and may just be different flower forms of the same species—or distinct species that evolved too quickly to show clear genetic differences. S. rosulatum: larger rose or white flowers with rose markings. S. micranthum: smaller, pale blue or violet flowers, and smaller seeds and capsules. Without flowers, they’re nearly impossible to tell apart. S. iridifolium is now usually treated as part of S. micranthum in recent sources like Plants of the World Online and iNaturalist.