Margaretta

Margaretta
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Margaretta
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Clasificación científica
Reino: Plantae
Subreino: Tracheobionta
División: Magnoliophyta
Clase: Magnoliopsida
Subclase: Asteridae
Orden: Gentianales
Familia: Apocynaceae
Subfamilia: Asclepiadoideae
Tribu: Asclepiadeae
Subtribu: Asclepiadinae
Género: Margaretta
Oliv.
Especies

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Margaretta es un género monotípico de fanerógamas de la familia Apocynaceae. Contiene una única especie:[1] Margaretta rosea Oliv.. Es originario del África tropical.

Está estrechamente ralacionado con el género Stathmostelma.

Contenido

Descripción

Son hierbas erectas, que alcanzan los 50-70 cm de altura, ramificado de baja densidad , con látex blanco, los órganos subterráneos en forma de tubérculos. Las hojas cortamente pecioladas; herbáceas de 2.5-19.5 cm de largo y 0.4-2.5 cm de ancho, lanceoladas u oblongas, basalmente redondeada, el ápice agudo a acuminado, venas 5-6 pares laterales.

Las inflorescencias son extra-axilares y terminales, solitarias, pedúnculos más cortos que las hojas adyacentes, con 3-10 flores, simples, pedunculadas, casi tan larga como los pedicelos.[2]

Referencias

  1. Especies en The International Plant Names Index
  2. (en inglés) «Margaretta». The Genera of Asclepiadoideae, Secamonoideae and Periplocoideae (Apocynaceae): Descriptions, Illustrations, Identification, and Information Retrieval Universidad de Bayreuth. Consultado el 19 de noviembre de 2009.

Enlaces externos

Bibliografía

  • Goyder, D.J. 2005. Infraspecific variation in Margaretta rosea Oliv. (Apocynaceae: Asclepiadoideae). Kew Bull. 60 : 87-94.
  • Mwanyambo, M.L. 1996. Infraspecific variation in the African genus Margaretta (Asclepiadaceae: Asclepiadoideae). Kew Bull. 51: 717–728
  • Oliver, D. 1875. Asclepiadaceae. The botany of the Speke and Grant Expedition. Trans. Linn. Soc. London 29: 108–113; t.172–177.

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