Malesherbia

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Malesherbia
Malesherbia linearifolia

Malesherbia linearifolia

Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Passion flower family (Passifloraceae)
Subfamily : Malesherbioideae
Genre : Malesherbia
Scientific name of the  subfamily
Malesherbioideae
Burnett
Scientific name of the  genus
Malesherbia
Ruiz & Pav.

The malesherbia is the only genus of the subfamily of Malesherbioideae in the family of passifloraceae (Passifloraceae) in the order of Malpighienartigen (Malpighiales).

description

Flowers of Malesherbia linearifolia in detail
Malesherbia paniculata

Vegetative characteristics

The xerophytic genus Malesherbia includes more or less herbaceous plants , some species slightly lignify. Malesherbia species have an unpleasant smell and are hairy with glands. The mostly alternate, sessile leaves are mostly deeply lobed and often have a smooth edge, sometimes it is toothed. Flowering plants are often without leaves. Stipules are sometimes present, but usually they are absent.

Generative characteristics

The flowers are usually single or sometimes in very differently structured inflorescences .

The hermaphrodite flowers are radially symmetrical and usually five-fold with a double flower envelope . Five sepals and five petals have grown together to form a tube. There is only one circle with five stamens . Three or four carpels are a syncarp, Upper permanent ovary grown. Stamens and gynoeceum together form an androgynophore . The petal tube and androgynophore can also be recognized by the capsule fruit .

The capsule fruits contain many oily seeds.

Occurrence

The malesherbia TYPES have their areas only in the Andes and the coastal desert ( Atacama Desert ). Locations are in Peru , Chile and (bordering) western Argentina . Most of the species are found in northern Chile.

They grow in arid areas.

Systematics

The genus Malesherbia was established by Hipólito Ruiz Lopez and José Antonio Pavón y Jiménez . A synonym for Malesherbia Ruiz & Pav. Is Gynopleura Cav. The subfamily Malesherbioideae was established by Gilbert Thomas Burnett . A synonym for Malesherbioideae Burnett is Malesherbiaceae D. Don nom. cons.

In the Angiosperm Phylogeny Group (APG III and IV), Malesherbia is the only genus of the subfamily Malesherbioideae and no longer of the Malesherbiaceae family and together with the Passifloroideae and Turneroideae in the Passifloraceae s. l. incorporated. The subfamilies of the Passifloroideae and Malesherbioideae have an androgynophore. The subfamily Malesherbioideae is very close to the subfamily Turneroideae , but the seeds lack an aril .

In 2003 Karla M. Gengler-Nowak proposes a division of the genus Malesherbia into five sections: Albitomenta , Cyanpetala , Malesherbia , Parvistella and Xeromontana .

In the genus Malesherbia there are around 24 to 27 species (selection):

swell

literature

  • Karla M. Gengler-Nowak: Reconstruction of the biogeographical history of Malesherbiaceae. In: The Botanical Review , January 2002.
  • Karla M. Gengler-Nowak: Molecular Phylogeny and Taxonomy of Malesherbiaceae. In: Systematic Botany , Volume 28, Issue 2, April 2003.
  • M. Ricardi: Revisión taxonómica de las Malesherbiaceas. In: Gayana Botánica , Volume 16, 1967, pp. 3–139.
  • Nadja Korotkova et al .: Phylogeny of the eudicot order Malpighiales: analysis of a recalcitrant clade with sequences of the petD group II intron. In: Plant Systematics and Evolution , Volume 282, 2009, pp. 201-228.
  • APG III: An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. , In: Botanical Journal of the Linnean Society , Volume 161, 2009, pp. 105-121.

Web links

Commons : Malesherbia  - collection of images, videos and audio files