Nano Nursery Nepenthes Encyclopedia • Article 2 • Research reviewed 22 September 2026
A Nepenthes label may combine a scientific name, a cross, a colour description, a locality and a supplier code. Each part can be useful, but they answer different questions. Reading them separately helps you preserve a plant’s identity and avoid turning a descriptive label into an unsupported botanical claim.
The species name
In Nepenthes ventricosa, Nepenthes is the genus and ventricosa is the specific epithet; together they form the species name. The genus starts with a capital letter and the epithet uses lower case. Both are italicised in formatted writing. After the full name has been introduced, N. ventricosa is a convenient abbreviation.
You may see Nepenthes ventricosa Blanco. “Blanco” is the botanical author citation. It identifies the author associated with the name, not a nursery, locality or clone. Kew records the name’s first publication in 1837 and currently accepts the species. Source: Kew’s N. ventricosa record.
A name is an organising tool, not a promise that all plants carrying it look identical. Seed-grown individuals can vary. A dependable label connects the plant to a species concept and a record of its origin; an attractive colour alone does neither.
Subspecies, varieties and botanical forms
Botanical names below species level use a rank marker such as subsp. for subspecies, var. for variety or f. for form. The marker is not italicised. These are formal ranks, rather than interchangeable words for anything that looks different.
A rank printed on an old label does not guarantee that the taxon is accepted at that rank today. For example, Kew currently places Nepenthes mirabilis var. echinostoma, var. biflora and var. globosa in the synonymy of N. mirabilis. Those names may remain useful in horticultural discussions, but their current treatment needs to be stated. Source: Kew’s N. mirabilis synonymy.
The practical response is to retain the original wording and add the current interpretation alongside it. Erasing an older label can remove valuable information. Promoting it to an accepted variety without checking can create a different problem.
Hybrids and the multiplication sign
The sign × indicates hybridity. A formula such as Nepenthes ventricosa × N. alata states a proposed or documented combination of parents. In breeding records, growers generally write the seed parent first and the pollen parent second. Preserve the supplied order: do not reverse it simply to make a label look tidier.
Parentheses matter in complex crosses. The illustrative formula (N. ventricosa × N. alata) × N. maxima describes a further cross involving an existing hybrid. Removing the brackets can make the breeding record ambiguous. A cross formula does not tell you which individual parent plants were used unless their identities are also recorded.
A hybrid can also have a name, such as the widely used Nepenthes × ventrata. The sign belongs before the hybrid epithet. Familiarity does not settle nomenclatural status: Kew currently records this particular name as unplaced and marks its original publication nom. nud., meaning a “naked name” that did not meet the relevant requirements for valid publication. Source: Kew’s ventrata record.
For collection records, distinguish “supplied as” from “parentage verified”. An inherited nursery label may be the best evidence available, but it is not equivalent to a breeding record. The dedicated ventrata article examines this distinction in more detail.
Cultivars, selected plants and clones
A cultivar is a named cultivated selection defined by its distinguishing characteristics. Cultivar epithets use single quotation marks and are not italicised. A cultivar may occur within a species or a hybrid; those categories are not mutually exclusive. A clone, by contrast, refers to material descended vegetatively from an individual plant. Not every clone has a cultivar name.
For carnivorous plants, consult the International Carnivorous Plant Society’s cultivar resources and the original published description. Its registered-cultivar page explicitly covers names registered before October 2020 and directs readers to the continuing Carnivorous Plant Newsletter archive for later descriptions. Absence from that older list alone cannot establish that a newer name is invalid. Source: ICPS Registered Cultivars.
Do not assume that seed from a named plant carries the same cultivar identity. The published description and any specified propagation requirements determine what material belongs to that cultivar. Some cultivar definitions permit qualifying seed progeny; others depend on maintaining a particular selection vegetatively. This is why “all cultivars are clones” is too broad a rule. An ICPS registration example explicitly permits seed progeny that retain its defining character. Source: ICPS registration example.
Localities, colours and supplier codes
“Red”, “striped”, “giant” or “highland” may describe appearance or cultivation context. Unless supported by the relevant documentation, they do not establish a botanical variety or a registered cultivar. Treat them as supplied descriptors and keep their wording intact.
A locality can be important evidence about origin, but only if that connection is documented. It should not be reconstructed from pitcher colour or guessed from a photograph. A supplier code can identify a particular clone, seed batch or commercial offer; its meaning depends on the supplier’s records. Never assume that two similar-looking codes refer to the same material.
For your own record, use separate fields: botanical name; supplied name; documented parentage; cultivar or clone designation; locality provenance; supplier reference; and acquisition date. Keep the physical plant label legible, and store the longer history in a notebook or digital record.
Accepted names, synonyms and unplaced names
An accepted name is the one a particular taxonomic authority adopts. A synonym is another name it places under the same accepted taxon. An unplaced name has not been resolved as either accepted or synonymous in that resource. These are different states of knowledge.
Different references can adopt different species boundaries. Kew’s reconsideration of Philippine plants formerly grouped under N. alata illustrates why older identifications need context: detailed comparison of herbarium material revealed distinctions obscured by the earlier broad treatment. A later revision does not automatically identify the parent of an old cultivated cross. Source: Kew’s account of the Philippine revisions.
A reliable label check
- Copy the original label exactly and photograph it before making corrections.
- Separate the scientific name from colour, locality, clone and supplier information.
- Check the taxonomic treatment and record the reference and date.
- For a cultivar, locate the original description and check what must be maintained.
- Record uncertainty explicitly rather than replacing missing history with a likely-looking identification.
Good naming makes the encyclopedia searchable, but it also protects the history of your plants. A careful record can preserve both the wording under which a plant arrived and the best-supported interpretation available now.
