Leafy Mitrewort, Star-shaped Mitrewort: Mitellastra caulescens (Synonym: Mitella caulescens) -
Angle-leaf Bishop's-cap, Varied-leaved Mitrewort: Ozomelis diversifolia (Synonym: Mitella diversifolia) ? - Listed in Hitchcock as being found at Mt. Adams.
Pacific Mitrewort, Threeparted Miterwort, Three-parted Mitrewort, Three-tooth Mitrewort, Three-toothed Mitrewort, Three-toothed Mitrewort: Ozomelis trifida (Synonyms: Mitella trifida, Mitella trifida var. trifida, Mitella trifida var. violacea, Mitella violacea, Ozomelis anomala, Ozomelis micrantha) -
Brewer's Mitrewort, Feathery Bishop's-cap, Mitrewort: Pectiantia breweri (Synonym: Mitella breweri) -
Coastal Bishop's Cap, Coastal Mitrewort: Pectiantia ovalis (Synonym: Mitella ovalis) - Collected at an unknown location on Mt. Adams.
Alpine Mitrewort, Five-stamen Bishop's-cap, Five-stamen Mitrewort: Pectiantia pentandra (Synonym: Mitella pentandra) -