- Bazzania yoshinagana, Bazzania platyphylla;Mastigobryum yoshinaganum
- Hypogymnia physodes, Parmelia physodes;Parmelia physodes forma vittatoides;Parmelia physodes var platyphylla;Parmelia duplicata var douglasicola;Parmelia oregana
- Mikania hookeriana, Willoughbya platyphylla;Mikania vitrea;Mikania hookeriana var crassicaulis;Mikania hookeriana var platyphylla;Mikania platyphylla
- Porella platyphylla, Jungermannia platyphylla var major;Jungermannia platyphylla;Jungermannia platyphylloidea;Madotheca platyphylla var major;Madotheca platyphylla var subsquarrosa Bernet;Madotheca platyphylla var subsquarrosa Schiffn;Madotheca platyphylla;Madotheca platyphylloidea;Porella platyphylla var subsquarrosa;Porella platyphylloidea
- Sagittaria platyphylla, Sagittaria;Sagittaria graminea var platyphylla Engelm;Sagittaria graminea var weatherbiana Fernald Bogin;Sagittaria weatherbiana Fernald;Sagittaria graminea var platyphylla;Delta arrowhead
- Schistidium rivulare, Grimmia rivularis;Grimmia alpicola var rivularis;Grimmia platyphylla;Schistidium platyphyllum;Schistidium rivulare subsp latifolium;Schistidium submuticum subsp arcticum
- Selaginella porelloides, Selaginella platyphylla;Lycopodium anomalum;Selaginella jenmani;Selaginella platyphylla var laxa;Lycopodium porelloides
- Tuckermannopsis platyphylla, Cetraria platyphylla
- Urochloa platyphylla, Broad-leaved Signal-grass;Brachiaria platyphylla;Broadleaf Signalgrass;Brachiaria extensa Chase;Brachiaria platyphylla (Munro ex C Wright) Nash;Paspalum platyphyllum Griseb, non Schult
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