Callitriche hermaphroditica (vernacular name: autumnal water-starwort) is a species of flowering plant belonging to the family Plantaginaceae.
Its native range is Subarctic and Temperate Northern Hemisphere.
Taxonomy Callitriche hermaphroditica was given its scientific name in 1755 by Carl Linnaeus. It is classified in the genus Callitriche within the family Plantaginaceae and has three accepted subspecies.
Callitriche hermaphroditica subsp. exalataThis subspecies is only found in northwestern Russia. Callitriche hermaphroditica subsp. hermaphroditicaThis subspecies is the most widespread and is native to North America, Europe, and Asia. Callitriche hermaphroditica subsp. macrocarpaThis subspecies is widely, but not continuously distributed being found in Alaska, Oregon, Greenland, Iceland, the British Isles, Scandenavia, and the Himalayas.
Callitriche hermaphroditica has synonyms of the species or one of its three subspecies.
Table of Synonyms Name Year Rank Synonym of: Notes Callitriche angustifolia 1792 species subsp. hermaphroditica = het., opus utique oppr. Callitriche aquatica subsp. autumnalis 1921 subspecies C. hermaphroditica ≡ hom. Callitriche autumnalis 1755 species C. hermaphroditica ≡ hom., nom. illeg. Callitriche autumnalis var. linearis 1862 variety subsp. hermaphroditica = het. Callitriche autumnalis f. linnei 1831 form subsp. hermaphroditica = het. Callitriche autumnalis f. macrocarpa 1867 form subsp. macrocarpa ≡ hom. Callitriche confervoides 1820 species subsp. hermaphroditica = het. Callitriche decussata 1820 species subsp. hermaphroditica = het. Callitriche euautumnalis 1868 species subsp. hermaphroditica = het. Callitriche exalata 2000 species subsp. exalata ≡ hom. Callitriche foliosa 1808 species subsp. hermaphroditica = het., nom. utique rej. Callitriche glomerata 1820 species subsp. hermaphroditica = het. Callitriche linearis 1813 species subsp. hermaphroditica = het. Callitriche sessilis 1805 species subsp. hermaphroditica = het. Callitriche sessilis var. autumnalis 1813 variety C. hermaphroditica ≡ hom., nom. superfl. Callitriche sessilis var. confervoides 1812 variety subsp. hermaphroditica = het. Callitriche stellaria 1811 species subsp. hermaphroditica = het. Callitriche virens 1817 species subsp. hermaphroditica = het. Stellaria autumnalis 1780 species subsp. hermaphroditica = het. Notes: ≡ homotypic synonym; = heterotypic synonym
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