Ruyschia
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The Ruyschia are a genus of plants from the Marcgraviaceae family with nine species . The genus is named after the Dutch anatomist and botanist Frederik Ruysch (1638–1731).
description
Ruyschia are climbing shrubs or lianas . The leaves are short-stalked. The inflorescences form dense, multi-flowered clusters of 20 to 30 (rarely up to 50) flowers . The flowers are small, short-stalked, the nectaries are small, sessile, up to semicircular or almost round, start at the base of the flowers or on the upper half of the flower stalk and are usually firm.
The petals are not overgrown or only weakly overgrown at the base. There are three or five stamens , the stamens are fused with the base of the petals, the stigma is head-shaped. The ovaries are bicameral, there are up to twenty ovules .
distribution
The genus is new-worldly , it can be found in the higher elevations of Central America and the northern Andes , but extends to the Lesser Antilles .
Systematics
The genus contains nine species:
- Ruyschia andina de Roon
- Ruyschia clusiifolia Jacq.
- Ruyschia enervia Lundell
- Ruyschia moralesii mutton
- Ruyschia pavonii G.Don
- Ruyschia phylladenia Sandwith
- Ruyschia pilophora Triana & Planch.
- Ruyschia tremadena ( Ernst ) Lundell
- Ruyschia valerioi Standl.
proof
- S. Dressler: Marcgraviaceae. In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants . Volume 6: Flowering Plants, Dicotyledons: Celastrales, Oxalidales, Rosales, Cornales, Ericales . Springer, Berlin / Heidelberg / New York 2004, ISBN 3-540-06512-1 , pp. 258–265 (English, limited preview in Google Book Search).
- Umberto Quattrocchi: CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology . CRC Press, 2000, ISBN 0-8493-2676-1 , p. 2356.
Individual evidence
- ↑ Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. [1]
- ^ AC de Roon: A new species of Ruyschia (Marcgraviaceae) from the South American Andes. In: Novon. 15, 2005, pp. 414-417. (on-line)
- ^ BE Mutton: Marcgraviaceae. In: BE Hammel, MH Grayum, C. Herrera, N. Zamora (eds.): Manual de plantas de Costa Rica. Vol. VI: Dicotiledóneas (Haloragaceae – Phytolaccaceae). Missouri Botanical Garden Press, St. Louis 2007, ISBN 978-1-930723-60-3 , pp. 374-391.
Web links
Wikispecies: Ruyschia - Species Directory