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4,639 species in Redwood National Park
Thysanocarpus curvipes
Torilis arvensis
Trautvetteria caroliniensis
Trichocnemis spiculatus
Trichoderma pulvinatum
Trichodes ornatus
Tricholoma equestre
Tricholoma portentosum
Tricholoma virgatum
Trifolium barbigerum
Trilobopsis loricata
Triodanis perfoliata
Tripleurospermum inodorum
Tubaria furfuracea
Umbilicaria hyperborea
Umbilicaria phaea
Urocerus albicornis
Usnea flavocardia
Usnea pacificana
Veronica arvensis
Vulpicida canadensis
Xerocomellus amylosporus
Xerosaprinus lubricus
Xestoleptura crassipes
Xylaria apiculata
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