Vaucheria

Vaucheria
Genus of yellow-green algae.

It is characterized by oil food reserves and tubular branches that have multiple nuclei and lack cross-walls except in association with reproductive organs or an injury. Vaucheria reproduce both asexually and sexually. The spherical female sex organ and the slender, hook-shaped male sex organ are usually produced on branches close to each other. After fertilization, the zygote may enter a resting phase for several weeks before developing into a new plant. Though most species occur in freshwater or are terrestrial, some are marine and others live in ice.

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      genus of yellow-green algae characterized by multinucleate tubular branches lacking cross walls except in association with reproductive organs or an injury. Food is stored as oil globules. Asexual reproduction is by motile multiflagellate zoospores and nonmotile aplanospores; sexual reproduction also occurs. The spherical female sex organ (oogonium) and the slender hook-shaped male sex organ (antheridium) are usually produced on branches close to each other. After the nonmotile egg is fertilized by a biflagellate sperm, the zygote may enter a resting phase for several weeks before germinating into a new plant. Most species occur in fresh water, and some are marine.

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Universalium. 2010.

Look at other dictionaries:

  • Vaucherĭa — (V. De C., Agardh.). Pflanzengattung aus der Familie der Ulvaceae Siphoneae, genannt nach Jean Pierre Vaucher (geb. um 1765, war Prediger u. Professor in Genf u. st. 1841; er schr.: Mém. sur les graines des conferves, Par. 1800; Hist. des conf. d …   Pierer's Universal-Lexikon

  • Vaucheria — Vaucheria, s. Algen, S. 316 (4: Grünalgen) …   Meyers Großes Konversations-Lexikon

  • Vaucheria — Género de algas amarillo verdosas. Se caracteriza por sus reservas oleíferas y sus ramas tubulares que tienen múltiples núcleos y carecen de tabiques, excepto en relación con los órganos reproductivos o con una lesión. Las Vaucheria se reproducen …   Enciclopedia Universal

  • vaucheria — vau·chè·ria s.f. TS bot. alga verde del genere Vaucheria | con iniz. maiusc., genere della famiglia delle Vaucheriacee {{line}} {{/line}} DATA: 1831. ETIMO: dal lat. scient. Vaucherĭa, der. di Vaucher, nome del botanico svizzero Jeanne Pierre… …   Dizionario italiano

  • vaucheria — vȯˈshirēə, vōˈsh noun Etymology: New Latin, from Jean Pierre Étienne Vaucher died 1841 Swiss botanist + New Latin ia 1. capitalized : a genus of green algae (family Vaucheriaceae) that have a thallus consisting of a single elongated irregularly… …   Useful english dictionary

  • Vaucheria — pl.f. vaucherie …   Dizionario dei sinonimi e contrari

  • vaucheria — vau·che·ria …   English syllables

  • Vaucheria litorea — Vaucheria litorea …   Wikipédia en Français

  • Вошерия — (Vaucheria, по имени швейцарского ботаника Воше, J. Р. É. Vaucher, 1763 1841)         род желто зелёных (по другим данным, зелёных) водорослей. Около 40 видов, обитающих на почве, в пресных и морских водах. В. тонкие зелёные стелющиеся нити… …   Большая советская энциклопедия

  • Вошерия — Научная классификация Домен:  Эукариоты …   Википедия

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