Viscum capense

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Viscum capense
Viscum capense habit IMG 6404C.JPG
Viscum capense showing its tangled habit in a typical host tree
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Santalales
Family: Santalaceae
Genus: Viscum
Species:
V. capense
Binomial name
Viscum capense
L.f.
Viscum capense has an angled mode of branching that causes its tangled growth habit. The result is ecologically important because it offers shelter to various organisms. As shown here, the flowers are greenish yellow Viscum capense Branching mode IMG 6408.JPG
Viscum capense has an angled mode of branching that causes its tangled growth habit. The result is ecologically important because it offers shelter to various organisms. As shown here, the flowers are greenish yellow

Viscum capense (common name, Cape mistletoe) is a species of Mistletoe that is indigenous to South Africa, especially the area from Cape Town, northwards along the coast up to Namibia, and eastwards as far as the Eastern Cape province.

This parasitic plant has jointed stems, vestigial leaves in the form of small scales around the stem nodes, and tiny yellowish-green flowers that produce translucent pale berries. The fruit is dispersed by birds. The plant is poisonous but is nonetheless used in traditional African medicine, the plant being boiled to make a tea that is used to soothe asthma. [1] [2] It is dioecious, with male and female flowers on separate plants. [3]

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<span class="mw-page-title-main">Moraceae</span> Family of flowering plants

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<span class="mw-page-title-main">Mistletoe</span> Common name for various parasitic plants that grow on trees and shrubs

Mistletoe is the common name for obligate hemiparasitic plants in the order Santalales. They are attached to their host tree or shrub by a structure called the haustorium, through which they extract water and nutrients from the host plant.

<span class="mw-page-title-main">Loranthaceae</span> Family of mistletoes

Loranthaceae, commonly known as the showy mistletoes, is a family of flowering plants. It consists of about 75 genera and 1,000 species of woody plants, many of them hemiparasites. The three terrestrial species are Nuytsia floribunda, Atkinsonia ligustrina, and Gaiadendron punctatum Loranthaceae are primarily xylem parasites, but their haustoria may sometimes tap the phloem, while Tristerix aphyllus is almost holoparasitic. For a more complete description of the Australian Loranthaceae, see Flora of Australia online., for the Malesian Loranthaceae see Flora of Malesia.

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<span class="mw-page-title-main">Santalaceae</span> Family of flowering plants

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Viscum is a genus of about 70–100 species of mistletoes, native to temperate and tropical regions of Europe, Africa, Asia and Australasia. Traditionally, the genus has been placed in its own family Viscaceae, but recent genetic research by the Angiosperm Phylogeny Group shows this family to be correctly placed within a larger circumscription of the sandalwood family, Santalaceae.

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Phoradendron is a genus of mistletoe, native to warm temperate and tropical regions of the Americas. The center of diversity is the Amazon rainforest. Phoradendron is the largest genus of mistletoe in the Americas, and possibly the largest genus of mistletoes in the world. Traditionally, the genus has been placed in the family Viscaceae, but recent genetic research acknowledged by the Angiosperm Phylogeny Group shows this family to be correctly placed within a larger circumscription of the sandalwood family, Santalaceae.

<span class="mw-page-title-main">Parasitic plant</span> Type of plant that derives some or all of its nutritional requirements from another living plant

A parasitic plant is a plant that derives some or all of its nutritional requirements from another living plant. They make up about 1% of angiosperms and are found in almost every biome. All parasitic plants develop a specialized organ called the haustorium, which penetrates the host plant, connecting them to the host vasculature – either the xylem, phloem, or both. For example, plants like Striga or Rhinanthus connect only to the xylem, via xylem bridges (xylem-feeding). Alternately, plants like Cuscuta and some members of Orobanche connect to both the xylem and phloem of the host. This provides them with the ability to extract water and nutrients from the host. Parasitic plants are classified depending on the location where the parasitic plant latches onto the host, the amount of nutrients it requires, and their photosynthetic capability. Some parasitic plants can locate their host plants by detecting volatile chemicals in the air or soil given off by host shoots or roots, respectively. About 4,500 species of parasitic plants in approximately 20 families of flowering plants are known.

Viscotoxins are small proteins that are toxic against a varied number of cell types. They belong to plant thionins, and are produced from the leaves and stems of the European mistletoe.

<i>Viscum cruciatum</i> Species of plant in the family Santalaceae

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<i>Dendrophthoe falcata</i> Species of mistletoe

Dendrophthoe falcata is one of the hemiparasitic plants that belong to the mistletoe family Loranthaceae. It is the most common of all the mistletoes that occur in India. At the moment reports say that it has around 401 plant hosts. The genus Dendrophthoe comprises about 31 species spread across tropical Africa, Asia, and Australia among which 7 species are found in India.

<i>Viscum rotundifolium</i> Species of flowering plant

Viscum rotundifolium, the red-berry mistletoe, is a variable, wide-ranging and monoecious mistletoe of southern Africa. It is a hardy, evergreen hemiparasite with a catholic variety of host plants, including other mistletoes. It may be found from near sea level to 1,950 m. Its fleshy, leathery leaves are dark or pale green and variable in shape, though usually broadly ovate to elliptic. While its creamy-green flowers are small and inconspicuous, the fruit are a brilliant, shiny orange-red colour when ripe. It is similar to V. schaeferiEngl. & K.Krause and V. pauciflorumL.f. with which it may be confused.

<i>Vexatorella</i> Genus of flowering plants

Vexatorella is a genus containing four species of flowering plant, commonly known as vexators, in the family Proteaceae. The genus is endemic to the Cape Floristic Region of South Africa. The name means “little trouble-maker”, given with reference to the initial difficulties of placing V. latebrosa within the family. All species are shrubs which occur in dry fynbos habitats on the fringes of the Succulent Karoo ecoregion. The inflorescences are similar to those of the related leucospermums but also share features of the leucadendrons, with the floral bracts becoming woody and enlarged following pollination. The flowers are insect-pollinated, with the seeds dispersed by ants (myrmecochory).

<i>Viscum minimum</i> Species of epiphyte

Viscum minimum is a species of mistletoe in the family Santalaceae. It is a parasitic plant native to South Africa.

<i>Schoenus pictus</i> Species of grass-like plant

Schoenus pictus is a species of sedge endemic to the Western Cape Province of South Africa. It is a species usually found on mountain slopes.

References

  1. "Viscum capense". 24 September 2007.
  2. Amabeoku, G.J; Leng, M.J; Syce, J.A (1998). "Antimicrobial and anticonvulsant activities of Viscum capense". Journal of Ethnopharmacology. 61 (3): 237–241. doi:10.1016/s0378-8741(98)00054-3. PMID   9705015.
  3. Maul, Karola; Krug, Michael; Nickrent, Daniel L.; Müller, Kai F.; Quandt, Dietmar; Wicke, Susann (2019). "Morphology, geographic distribution, and host preferences are poor predictors of phylogenetic relatedness in the mistletoe genus Viscum L". Molecular Phylogenetics and Evolution. 131: 106–115. doi:10.1016/j.ympev.2018.10.041. PMID   30399429.