Hi @marcoagpinto, I don’t know about POS and capitalization for words in a taxonomy.
I found ’ International Code of Nomenclature of Bacteria: Bacteriological Code, 1990 Revision.’ (https://www.ncbi.nlm.nih.gov/books/NBK8808/).
Rule 7: “The name of a taxon above the rank of genus up to and including order is a substantive or an adjective used as a substantive of Latin or Greek origin, or a latinized word. It is in the feminine gender, the plural number, and written with an initial capital letter.”
So, plural noun (NNS) and adjective (JJ), not proper noun. BUT, until this morning, I thought that they were proper nouns.
Rule 10a “The name of a genus or subgenus is a substantive, or an adjective used as a substantive, in the singular number and written with an initial capital letter.”
So, noun and adjective (JJ), not proper noun. But, the rule does not tell me whether the noun is countable (NN) or non-count (NN:U)
I don’t know whether there is a single rule for all taxonomies.
I suppose that a quick win is to treat all the terms as proper nouns, but is a bit of a hack.