"marsh gentian" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "marsh",
        "3": "gentian"
      },
      "expansion": "marsh + gentian",
      "name": "compound"
    }
  ],
  "etymology_text": "Compound of marsh + gentian.",
  "forms": [
    {
      "form": "marsh gentians",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "marsh gentian (plural marsh gentians)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Gentianales order plants",
          "orig": "en:Gentianales order plants",
          "parents": [
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A blue-to-purple gentian native to Eurasian marshlands, Gentiana pneumonanthe."
      ],
      "id": "en-marsh_gentian-en-noun-dRj9CnAj",
      "links": [
        [
          "gentian",
          "gentian#English"
        ],
        [
          "Eurasian",
          "Eurasian"
        ]
      ]
    }
  ],
  "word": "marsh gentian"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "marsh",
        "3": "gentian"
      },
      "expansion": "marsh + gentian",
      "name": "compound"
    }
  ],
  "etymology_text": "Compound of marsh + gentian.",
  "forms": [
    {
      "form": "marsh gentians",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "marsh gentian (plural marsh gentians)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries using missing taxonomic name (species)",
        "en:Gentianales order plants"
      ],
      "glosses": [
        "A blue-to-purple gentian native to Eurasian marshlands, Gentiana pneumonanthe."
      ],
      "links": [
        [
          "gentian",
          "gentian#English"
        ],
        [
          "Eurasian",
          "Eurasian"
        ]
      ]
    }
  ],
  "word": "marsh gentian"
}