Hydrocotyle

Hydrocotyle
Hydrocotyle bowlesioides
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Apiales
Family: Araliaceae
Subfamily: Hydrocotyloideae
Genus: Hydrocotyle[1][2][3]

Hydrocotyle, sometimes called water pennywort,[4] Indian pennywort, marsh penny, thick-leaved pennywort and even white rot[5] is a genus of prostrate, perennial[6] aquatic or semi-aquatic plants formerly classified in the family Apiaceae, now in the family Araliaceae.[3]

Description

Water pennyworts, Hydrocotyles, are very common. They have long creeping stems that often form dense mats, often in and near ponds, lakes, rivers, marshes[4] and some species in coastal areas by the sea.[7][8]

Leaves
Simple, with small leafy outgrowth at the base, kidney shaped to round. Leaf edges are scalloped. The leaf surfaces of Hydrocotyle are prime grounds for oviposition of many butterfly species, such as Anartia fatima.
Flowers
Flower clusters are simple and flat-topped or rounded. Involucral bracts Inconspicuous bracts at the base of each flower. Indistinct sepals.
Fruits and reproduction
Elliptical to round with thin ridges and no oil tubes (vitta) which is characteristic in the fruit of umbelliferous plants.[6]
The prostrate plants reproduce by seed and by sending roots from stem nodes.[9]

Selected species

The genus Hydrocotyle has between 75 and 100 species.[10] that grow in tropical and temperate regions worldwide[6] A few species have entered the world of cultivated ornamental aquatics.[11] A list of selected species:[1][2][3][10][12][13][14]

  • Hydrocotyle americana L. — American marshpennywort
  • Hydrocotyle batrachium Hance
  • Hydrocotyle benguetensis Elm.
  • Hydrocotyle bonariensis Lam. — largeleaf pennywort
  • Hydrocotyle bowlesioides Mathias & Constance — largeleaf marshpennywort
  • Hydrocotyle calcicola
  • Hydrocotyle dichondroides Makino
  • Hydrocotyle dielsiana
  • Hydrocotyle heteromeria — waxweed
  • Hydrocotyle hexagona
  • Hydrocotyle himalaica
  • Hydrocotyle hirsuta Sw. — yerba de clavo
  • Hydrocotyle hitchcockii
  • Hydrocotyle hookeri
  • Hydrocotyle hydrophila - endemic to New Zealand[15]
  • Hydrocotyle javanica Thunb.
  • Hydrocotyle keelungensis Liu, Chao & Chuang
  • Hydrocotyle leucocephala Cham. & Schltdl. — Brazilian pennywort
  • Hydrocotyle mannii Hook.f.
  • Hydrocotyle microphylla A.Cunn.
  • Hydrocotyle moschata G. Forst. — musky marshpennywort
  • Hydrocotyle nepalensis Hook.
  • Hydrocotyle novae-zelandiae DC.
  • Hydrocotyle prolifera Kellogg — whorled marshpennywort
  • Hydrocotyle pseudoconferta
  • Hydrocotyle pusilla A. Rich. — tropical marshpennywort
  • Hydrocotyle ramiflora
  • Hydrocotyle ranunculoides L. f. — floating marshpennywort, floating marshpennywort, floating pennyroyal
  • Hydrocotyle salwinica
  • Hydrocotyle setulosa Hayata
  • Hydrocotyle sibthorpioides Lam. — lawn marshpennywort
  • Hydrocotyle tambalomaensis
  • Hydrocotyle tripartita
  • Hydrocotyle umbellata L. — manyflower marshpennywort, umbrella pennyroyal
  • Hydrocotyle verticillata Thunb. — whorled marshpennywort, whorled marshpennywort, whorled pennyroyal
  • Hydrocotyle vulgaris L. — marsh pennywort, common pennywort
  • Hydrocotyle wilfordii
  • Hydrocotyle wilsonii
  • Hydrocotyle yanghuangensis

Distribution

Hydrocotyleae grow in wet and damp places in the tropics and the temperate zones.[6]

References

  1. 1 2 "Hydrocotyle L." African Plants Database. South African National Biodiversity Institute, the Conservatoire et Jardin botaniques de la Ville de Genève and Tela Botanica. Retrieved 2008-04-25.
  2. 1 2 Natural Resources Conservation Service (NRCS). "Classification for Kingdom Plantae Down to Genus Hydrocotyle L." The PLANTS Database. United States Department of Agriculture,. Retrieved 2008-04-25.
  3. 1 2 3 Germplasm Resources Information Network (GRIN) (2006-04-02). "Genus: Hydrocotyle L." Taxonomy for Plants. USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland. Archived from the original on 2009-05-08. Retrieved 2008-04-25.
  4. 1 2 University of Florida Herbarium (2005). "Hydrocotyle species". Aquatic, Wetland and Invasive Plant Particulars and Photographs. University of Florida, Center for Aquatic and Invasive Plants. Archived from the original on 2008-04-20. Retrieved 2008-04-25.
  5. ↑ M. Grieve (1931). "Hydrocotyle". A Modern Herbal. © Copyright Protected 1995-2008 Botanical.com. Retrieved 2008-04-25.
  6. 1 2 3 4 Flora of China. "Hydrocotyle Linn". Family List. Retrieved 2008-04-25.
  7. ↑ Aluka. "Hydrocotyle bonariensis Lam. [family UMBELLIFERAE]". African Plants. Ithaka Harbors, Inc. doi:10.5555/AL.AP.COMPILATION.PLANT-NAME-SPECIES.HYDROCOTYLE.BONARIENSIS. Retrieved 2008-04-25.
  8. ↑ Klein, Alecsandro Schardosim; Citadini-Zanette, Vanilde; dos Santos, Robson (September 2007). "Florística e estrutura comunitária de restinga herbácea no município de Araranguá, Santa Catarina" (– Scholar search). Biotemas (in Portuguese). 20 (3): 15–26. Retrieved 12 August 2014.
  9. ↑ Watson, Mark F. "Hydrocotyle L". Flora of Bhutan. Retrieved 2008-04-25.
  10. 1 2 Flora of China. "1. Hydrocotyle Linnaeus". Family List. 14. Retrieved 2008-04-25.
  11. ↑ "Pennywort, Genus Hydrocotyle". The Aquarium Gardener Series. Retrieved 2008-04-25.
  12. ↑ Taiwan Plant Names. "Hydrocotyle Linn". Family List. III. Retrieved 2008-04-25.
  13. ↑ Madagascar Catalog. "Hydrocotyle L." Genus Page. Retrieved 2008-04-25.
  14. ↑ "hydrocotyle". New Zealand Weeds. Massey University: Institute of Natural Resources. Archived from the original on 2008-10-14. Retrieved 2008-04-25.
  15. ↑ "Hydrocotyle hydrophila | New Zealand Plant Conservation Network". nzpcn.org.nz. Retrieved 2017-11-03.
  • "Hydrocotyle". Integrated Taxonomic Information System. Retrieved 25 April 2008.
  • Lamarck, Jean Baptiste Pierre Antoine de Monet de; Poiret, Jean Louis Marie (1783–1808). "HYD". Encyclopédie méthodique: botanique /Par m. le chevalier de Lamarck. Vol. 3. QK7.L36 1783-1808.
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