Key to the species of Chnoospora

1 Fronds erect from a discrete base, silky colorless hairs common along mid an upper parts of plants; growing high in the intertidal region, usually on vertical or sloping igneous rocks C. minima
1 Fronds decumbent to prostrate, bases spreading; axes terete, without colorless hairs; usually growing on horizontal calcareous surfaces below low tide on reef flats C. implexa

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