"subvarietas" meaning in Conventions internationales

{
  "categories": [
    {
      "kind": "other",
      "name": "Dérivations en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en conventions internationales préfixés avec sub-",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms scientifiques",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Taxinomie:Rangs taxinomiques en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Conventions internationales",
      "orig": "conventions internationales",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Motdérivé de varietas, avec le préfixe sub-."
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "name",
  "pos_title": "Nom scientifique",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en conventions internationales de la biologie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en conventions internationales de la botanique",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en conventions internationales de la mycologie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Sous-variété."
      ],
      "id": "fr-subvarietas-conv-name-fZNI5ukN",
      "raw_tags": [
        "Phylogénétique"
      ],
      "topics": [
        "biology",
        "botany",
        "mycology"
      ]
    }
  ],
  "tags": [
    "scientific"
  ],
  "word": "subvarietas"
}

{
  "categories": [
    "Dérivations en conventions internationales",
    "Mots en conventions internationales préfixés avec sub-",
    "Noms scientifiques",
    "Taxinomie:Rangs taxinomiques en conventions internationales",
    "conventions internationales"
  ],
  "etymology_texts": [
    "Motdérivé de varietas, avec le préfixe sub-."
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "name",
  "pos_title": "Nom scientifique",
  "senses": [
    {
      "categories": [
        "Lexique en conventions internationales de la biologie",
        "Lexique en conventions internationales de la botanique",
        "Lexique en conventions internationales de la mycologie"
      ],
      "glosses": [
        "Sous-variété."
      ],
      "raw_tags": [
        "Phylogénétique"
      ],
      "topics": [
        "biology",
        "botany",
        "mycology"
      ]
    }
  ],
  "tags": [
    "scientific"
  ],
  "word": "subvarietas"
}