| Taxon | Caltha leptosepala |
| group | Eudicots |
| Family | Ranunculaceae |
| Family common name(s) | buttercup; butter-cup; crowfoot; crowfoots; larkspur; delphinium; ranunc |
| Genus common name(s) | marsh-marigold; marsh marigold; marshmarigold; marsh mary-gold; marsh marygold; March marigold |
| Species common name(s) | alpine white marsh-marigold; alpine white marsh marigold; white mountain marsh-marigold; white mountain marsh marigold; western marsh marigold; slender-sepaled marsh-marigold; slender-sepaled marsh marigold; slender-sepal marsh-marigold; slendersepal marshmarigold; broad-leaved marsh-marigold; broad leaved marsh marigold; broad-leaf marsh-marigold; broadleaf marshmarigold; elkslip marsh-marigold; elkslip marsh marigold; elkslip marshmarigold; elkslip white marsh marigold; elk-slip marsh-marigold; elk-slip marsh marigold; elk slip marsh marigold; elkslip; elk-slip; elk slip |
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| Common name(s) specific to synonym; taxon noted in brackets | two-flowered white marsh-marigold [var. biflora]; two-flowered white marsh marigold [var. biflora]; two-flowered marsh-marigold [var. biflora]; two-flowered marsh marigold [var. biflora]; Howell's marsh-marigold [subsp. howelli]; Howell's marsh marigold [subsp. howelli]; Howell's marshmarigold [subsp. howelli]; Howell marsh-marigold [subsp. howelli]; Howell marsh marigold [subsp. howelli]; Howell marshmarigold [subsp. howelli] |
| Common name(s) generally applied to other taxa or multiple taxa | white marsh-marigold, white marsh marigold, white marshmarigold, yellow marsh-marigold, yellow marsh marigold, yellow marshmarigold, mountain marsh-marigold, mountain marsh marigold are applied to multiple Caltha taxa; cowslip, gowan, gowans are applied to taxa in multiple families |
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| Notes | Howell is a proper name, so upper case preferable; Howells is an error |
| Synonymy: The Jepson Manual (1993), FNA, PLANTS, etc | var. biflora (DC.) G. Lawson; Caltha biflora DC. |
