First records of non-native species Callitrichedeflexa (Plantaginaceae), which was previously misidentified as C.terrestris in Japan
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Summary
This summary is machine-generated.A new naturalised species, Callitriche deflexa, has been identified in Japan, previously misidentified as Callitriche terrestris. Genetic and morphological differences distinguish these two terrestrial Callitriche species.
Area Of Science
- Botany
- Plant Taxonomy
- Biodiversity
Background
- The genus *Callitriche* comprises small herbaceous plants, including terrestrial and aquatic species.
- Six *Callitriche* species are known in Japan: four native and two naturalised.
- *Callitriche terrestris* was first reported as naturalised in Japan in 1984.
Purpose Of The Study
- To report the presence of a new naturalised terrestrial species, *Callitriche deflexa*.
- To differentiate *C. deflexa* from the similar-looking *C. terrestris*.
- To correct previous misidentifications in scientific literature and herbarium records.
Main Methods
- Morphological examination of herbarium specimens.
- Genetic analysis to distinguish between species.
- Re-evaluation of previously identified specimens.
Main Results
- A new naturalised terrestrial species, *Callitriche deflexa*, was identified in Japan.
- *C. deflexa* was previously misidentified as *C. terrestris* due to morphological similarities.
- Key distinguishing features include genetic differences and longer pedicels in *C. deflexa*.
- Re-examination confirmed most specimens labelled *C. terrestris* were correct, but some were *C. deflexa*.
Conclusions
- *Callitriche deflexa* is a newly identified naturalised species in Japan.
- Accurate identification requires considering both morphological and genetic data.
- Previous research, including developmental studies, needs to be updated to reflect the correct species identification.
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