| Taxon | Olsynium douglasii var. douglasii |
| group | Monocots |
| Family | Iridaceae |
| Family common name(s) | iris; irises |
| Genus common name(s) | olsynium; grass-widow; grass widow; grasswidow; grass-widows; grass widows; grasswidows |
| Species common name(s) | Douglas's olsynium; Douglas's grass-widow; Douglas's grass widow; Douglas's grasswidowl Douglas's purple-eyed grass; Douglas's purple-eyedgrass; Douglas's blue-eyed-grass; Douglas's blue-eyed grass; Douglas's blue eyed grass; Douglas' olsynium; Douglas' grass-widow; Douglas' grass widow; Douglas' grasswidow; Douglas' purple-eyed grass; Douglas' purple-eyedgrass; Douglas' blue-eyed-grass; Douglas' blue-eyed grass; Douglas' blue eyed grass; Douglas olsynium; Douglas's grass-widow; Douglas grass widow; Douglas grasswidow; Douglas purple-eyed grass; Douglas purple-eyedgrass; Douglas blue-eyed-grass; Douglas blue-eyed grass; Douglas blue eyed grass; widow’s blue eyes; purple blue-eyed-grass; purple blue-eyed grass; purple grass-widows; purple grass widows; purple grasswidows; purple grass-widow; purple grass widow; purple grasswidow |
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| Common name(s) generally applied to other taxa or multiple taxa | purple-eyed-grass, purple-eyed grass, purple eyed grass are applied to multiple Sisyrinchium s.l. taxa; satin flower, satin-flower, satinflower, scurvey-grass, scurvey grass, scurveygrass are applied to taxa in multiple families |
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| Notes | Douglas is a proper name, so upper case preferable; Dougla's is an error |
| Synonymy: The Jepson Manual (1993), FNA, PLANTS, etc | Sisyrinchium douglasii A. Dietr. var. douglasii |
