Narcissus longispathus
species of plant
Narcissus longispathus is a species of bulbous plant that is endemic to Spain. Its natural habitat is rivers. It is threatened by habitat loss. This distinctive daffodil species grows in permanently damp meadows and spring-fed stream banks in mountainous areas of Andalusia. Despite surviving in only ten subpopulations across several mountain ranges, it maintains high genetic diversity, with most variation occurring within rather than between populations.
Genetic diversity and population structure
Allozyme analyses across 27 populations of the daffodil have revealed surprisingly high genetic variation for a species confined to a few fragmented mountain habitats. By screening enzyme variants (allozymes) at 19 gene-loci in 858 plants, researchers found that 68 % of loci were polymorphic—that is, they existed in more than one form—and that, on average, there were 2.1 alleles per locus. Although some small or isolated populations showed modest reductions in allelic richness, most genetic diversity (roughly 84 %) was maintained within individual populations rather than between them. Observed levels of heterozygosity (the proportion of individuals carrying two different alleles at a locus) were only slightly lower than expected under random mating, indicating little inbreeding despite the species' patchy distribution.
Spatial analyses uncovered a clear pattern of isolation by distance operating over very short ranges.
“Narcissus longispathus” enters the record as species of plant. Crown Archives preserves that source wording while asking what Narcissus, longispathus and species can confirm, complicate or overturn.
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Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Jan 13, 2026. The linked authority identifier is Q1336160. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Narcissus longispathus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.