Muehlenbeckia
Muehlenbeckia or maidenhair is a genus of flowering plants in the family Polygonaceae. It is native to the borders of the Pacific, including South and North America, Papua New Guinea and Australasia. It has been introduced elsewhere, including Europe. Species vary in their growth habits, many being vines or shrubs. In some environments, rampant species can become weedy and difficult to eradicate.
Species
GENUS
- KingdomPlantae
- PhylumTracheophyta
- ClassMagnoliopsida
- OrderCaryophyllales
- FamilyPolygonaceae
Native toArgentina Northeast, Argentina Northwest, Argentina South, Bolivia, Brazil South, Brazil West-Central, California, Chatham Is., Chile Central, Chile North, Chile South, Colombia
Die Drahtsträucher oder Muehlenbeckien (Muehlenbeckia) sind eine Pflanzengattung innerhalb der Familie der Knöterichgewächse (Polygonaceae). Die 22 bis 23 Arten sind in Neuguinea, Australien, Neuseeland und in der Neotropis verbreitet.[1] [2] Inhaltsverzeichnis 1 Beschreibung 1.1 Vegetative Merkmale 1.2 Generative Merkmale 2 Systematik und Verbreitung 3 Verwendung 4 Quellen 4.1 Einzelnachweise 5 Weblinks Beschreibung Illustration von Muehlenbeckia adpressa aus Curtis Blüten von Muehlenbeckia complexa Habitus des Schwarzfrüchtigen Drahtstrauchs (Muehlenbeckia axillaris) Habitus von Muehlenbeckia platyclada Vegetative Merkmale Drahtstrauch-Arten sind kleine, mehr oder weniger aufrechte oder niederliegende, kletternde, sehr dicht verzweigte, laubabwerfende Sträucher. Es werden Rhizome gebildet.[2] Die Rinde der dünnen Zweige ist dunkel und kahl oder flaumig behaart, manchmal papillös.[2] Die meist relativ kleinen, wechselständig angeordneten Laubblätter sind meist in Blattstiel und Blattspreite gegliedert. Die einfache Blattspreite ist linealisch bis kreisförmig, gegenförmig oder dreieckig-lanzettlich. Der Blattrand ist glatt oder unregelmäßig wellig.[2] Die Ochrea fällt meist früh ab
via · Kew POWO
Article
7 sectionsContents
- Description
- Taxonomy
- Species
- Distribution
- Invasiveness
- References
- External links
Muehlenbeckia or maidenhair is a genus of flowering plants in the family Polygonaceae. It is native to the borders of the Pacific, including South and North America, Papua New Guinea and Australasia. It has been introduced elsewhere, including Europe. Species vary in their growth habits, many being vines or shrubs. In some environments, rampant species can become weedy and difficult to eradicate.
==Description== Species of Muehlenbeckia vary considerably in their growth habits; they may be perennials, vinelike, or shrubs. All have rhizomatous roots. Their leaves are arranged alternately on the stem, usually with stalks (petioles), but sometimes stalkless (sessile). The brownish ocrea is short and tubular, soon disintegrating. The inflorescences may be terminal or axillary, and are in the form of spikes or clusters, with at most very short peduncles (flowering stems). Individual flowers have pedicels (stalks). The flowers may be bisexual or unisexual, with sometimes a mixture of staminate, pistillate and bisexual flowers on the same plant. There are five white to greenish white tepals, joined at the base. Staminate flowers have 8 (sometimes 9) stamens and a rudimentary pistil. Pistillate flowers have rudimentary stamens and three spreading styles. The fruit is in the form of a black or dark brown unwinged achene, three-sided to more or less globe-shaped, at least partly enclosed by the persistent tepals.