Search for Houstonia nigricans returned 2 results.

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  • Taxonomic rank: Subvariety

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  1. subvariety: Cypripedium argus subvar. nigricans A.H.Kent

    Synonym of Paphiopedilum argus (Rchb.f.) Stein

  2. subvariety: Brassica rapa subvar. nigricans DC.

    Synonym of Brassica rapa L.

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