- Anastrophyllum michauxii, Diplophyllum michauxii;Jungermannia densa;Jungermannia michauxii;Lophozia michauxii;Sphenolobus michauxii
- Baccharis densa, Heterothalamus densus;Pseudobaccharis densa;Psila densa
- Lecanora densa, Lecanora varia ssp densa
- Lindsaea schomburgkii, Lindsaea coriifolia;Lindsaea schomburgkii fo coriifolia;Lindsaea schomburgkii fo densa
- Paradrymonia densa, Centrosolenia densa;Episcia densa
- Pinus elliottii, Slash pine;Pinus densa
- Scapania undulata, Jungermannia nemorosa var purpurascens;Jungermannia undulata var aequata;Jungermannia undulata var purpurascens;Jungermannia undulata var rivularis;Jungermannia undulata;Martinellia dentata;Martinellia purpurascens var ambigua;Martinellia purpurascens;Martinellia undulata var aequatiformis;Martinellia undulata var dentata;Martinellia undulata var integrifolia;Martinellia undulata var purpurascens;Martinellia undulata var purpurea;Martinellia undulata var rivularis;Martinellia undulata;Radula dentata;Scapania atrata;Scapania dentata var ambigua;Scapania dentata var heterophylla;Scapania dentata var speciosa;Scapania dentata var taeniiformis;Scapania dentata;Scapania douinii;Scapania heterophylla;Scapania intermedia;Scapania nemorosa var intermedia;Scapania nemorosa var purpurascens;Scapania oseensis;Scapania paludosa var aquatica;Scapania paludosa var natans;Scapania purpurascens;Scapania speciosa;Scapania splendens;Scapania squarrosula;Scapania suecica;Scapania undulata var aequata;Scapania undulata var aequatiformis;Scapania undulata var alata;Scapania undulata var ambigua;Scapania undulata var densa;Scapania undulata var dentata;Scapania undulata var denticulata;Scapania undulata var flagellaris;Scapania undulata var heterophylla;Scapania undulata var lepida;Scapania undulata var purpurascens;Scapania undulata var purpurea;Scapania undulata var rivularis;Scapania undulata var subglacialis
- Xenochila integrifolia, Plagiochila integrifolia;Plagiochila paradoxa;Racemigemma densa
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