Callitriche heterophylla
| Callitriche heterophylla | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Callitriche |
| Species: | C. heterophylla
|
| Binomial name | |
| Callitriche heterophylla | |
Callitriche heterophylla, commonly called twoheaded water-starwort,[2] is a species of flowering plant in the family Plantaginaceae. It is native to North America, where it found in the north from Greenland to Alaska, south to Mexico.[3] It is widespread in the United States.[4] Its natural habitat is in a wide variety of wetlands, including ponds, streams, and mudflats. It is typically found in areas of still or slow moving water.[5]
Callitriche heterophylla is an aquatic plant, growing almost entirely submerged except for its floating stem tips. It produces minutely small flowers throughout the growing season.[5]
Taxonomy
Callitriche heterophylla was scientifically described and named in 1813 by Frederick Traugott Pursh. It is part of the genus Callitriche which is classified in the family Plantaginaceae. According to Plants of the World Online it has eleven heterotypic synonyms.[6]
| Name | Year | Rank | Notes |
|---|---|---|---|
| Callitriche anceps Fernald | 1908 | species | |
| Callitriche asagraei Hegelm. | 1864 | species | |
| Callitriche bolanderi Hegelm. | 1868 | species | |
| Callitriche brevifolia Pursh | 1813 | species | |
| Callitriche cruciata Raf. | 1811 | species | nom. utique rej. |
| Callitriche heterophylla subsp. bolanderi (Hegelm.) Calder & Roy L.Taylor | 1963 | subspecies | |
| Callitriche heterophylla var. bolanderi (Hegelm.) Fassett | 1951 | variety | |
| Callitriche ovata Raf. | 1811 | species | nom. utique rej. |
| Callitriche palustris var. bolanderi (Hegelm.) Jeps. | 1936 | variety | |
| Callitriche spuria Raf. | 1808 | species | nom. utique rej. |
| Callitriche tuerckheimii Urb. | 1912 | species |
References
- ^ NatureServe (9 January 2026). "Callitriche heterophylla". NatureServe Explorer. Arlington, Virginia. Retrieved 17 January 2026.
- ^ NRCS. "Callitriche heterophylla". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 14 August 2018.
- ^ Alan Weakley (2015). "Flora of the Southern and Mid-Atlantic States". Archived from the original on 2018-10-06. Retrieved 2018-08-15.
- ^ Kartesz, John T. (2014). "Callitriche heterophylla". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). Retrieved 14 August 2018.
- ^ a b Yatskievych, George (2013). Flora of Missouri, Volume 3. Missouri Botanical Garden Press. p. 623.
- ^ POWO (2026). "Callitriche heterophylla Pursh". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 16 January 2026.