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4,639 species in Redwood National Park
Chrysaora fuscescens
Chrysomyxa piperiana
Chthamalus dalli
Cladonia concinna
Cladonia dimorpha
Clavaria californica
Clupea pallasii
Coleosporium asterum
Colias eurytheme
Convolvulus arvensis
Coprinellus disseminatus
Coprinopsis stercorea
Cortinarius aurantiobasis
Cortinarius californicus
Cortinarius cisqhale
Cortinarius seidliae
Cortinarius substriatus
Cotoneaster coriaceus
Cotoneaster horizontalis
Crocosmia aurea
Cronartium quercuum
Cuphophyllus pratensis
Cylindrosporium nuttalliae
Cystoderma amianthinum
Cystopteris fragilis
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