Thonningia

Last updated

Thonningia
Thonningia sanguinea.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Santalales
Family: Balanophoraceae
Genus: Thonningia
Vahl
Species:
T. sanguinea
Binomial name
Thonningia sanguinea
Vahl
Synonyms

Thonningia coccinea
Thonningia dubia
Thonningia elegans

Contents

Thonningia is a monotypic genus of flowering plants in the family Balanophoraceae containing the single species Thonningia sanguinea. [1] [2] It is distributed throughout much of southern and western Africa, particularly the tropical regions. [2] [3] Common names for the plant include ground pineapple. [3] [4] A familiar plant to humans, it has an extremely long list of common names in many African languages. Many names are inspired by the resemblance of the plant's inflorescence to a pineapple or palm tree. [5] Some of the names can be translated as pineapple of the bush (from Anyi), duiker's kolanut (from Igala), and crown of the ground (from Yoruba). [4]

Description

This species is a fleshy dioecious herb growing from an underground tuber. It is parasitic on other plants via its tuber. The branching, yellowish tuber extends horizontally up to 10 or 15 centimeters through the soil. It forms bulb-like swellings at the points where it attaches to the roots of its host plants. These swellings, or galls, can reach over 18 centimeters wide. [6] The tuber can resemble a rhizome, but there is no true rhizome. The stem is coated with spirals of scale-like leaves. The leaves are not green; there is no chlorophyll, as the plant obtains nutrients from hosts and does not need to photosynthesize. The flowering stem emerges from the ground to produce a bright red or pink inflorescence containing male and female flowers. The crowded flower heads are covered in scales. The inflorescence is up to 15 to 20 centimeters long. [2] [5]

Habitat, distribution, and ecology

This plant grows in forests and other habitat. [5] It can often be found in plantations, where it parasitizes such crop trees as Hevea brasiliensis (rubber), Phoenix dactylifera (date), and Theobroma cacao (cocoa). [7]

This species is pollinated by flies and ants. Flies of the families Muscidae and Calliphoridae and ants of genus Technomyrmex visit the flowers to obtain nectar, pollinating the flowers as they enter. Muscid flies of genus Morellia lay eggs in the flowers and the larvae feed on the male flowers when they emerge. This could be an example of mutualism; as the fly pollinates the plant, it provides a site for egg-laying and nutrition for the larvae. [8]

Uses

The plant is used as a traditional remedy in many African cultures. This includes in those with sexually transmitted diseases in Ghana. [5] In those with diarrhea in the Congo. [5] A portion of the leaves is used in those with worms. Mixed with Capsicum, it is used topically on hemorrhoids and torticollis. [5] It is used for leprosy, skin infections and abscesses, dental caries, gingivitis, and heart disease. In Zaire, it is said to prevent incontinence and bedwetting. [5]

The other uses for the plant include as an ingredient in the poison applied to hunting arrows by peoples of Côte d'Ivoire. [5] It is also known as a flavoring for soup. [3] In some areas, the flower heads are considered to be an aphrodisiac. [5] In Ghana and Côte d'Ivoire, the spiky flower heads are tied to the ankles of toddlers to encourage them to learn to walk; the spikes keep them from sitting down. [4] All parts of the plant are used. [5]

The plant is considered a weed in some places, such as rubber plantations, where it can become abundant. [9]

Related Research Articles

<i>Dactylanthus taylorii</i> Species of flowering plant

Dactylanthus taylorii, commonly known in English as wood rose and in Māori as te pua o te rēinga, is a fully parasitic flowering plant, the only one endemic to New Zealand. The host tree responds to the presence of Dactylanthus by forming a burl-like structure that resembles a fluted wooden rose. When the flowers emerge on the forest floor, they are pollinated by a ground-foraging species of native bat.

Marantaceae Family of flowering plants in the Commelinid order Zingiberales

The Marantaceae are a family, the arrowroot family, of flowering plants consisting of 31 genera and around 530 species, defining it as one of the most species-rich families in its order. Species of this family are found in lowland tropical forests of Africa, Asia, and the Americas. The majority (80%) of the species are found in the American tropics, followed by Asian (11%) and African (9%) tropics. They are commonly called the prayer-plant family and are also known for their unique secondary pollination presentation.

<i>Hevea</i> Genus of flowering plants in the spurge family Euphorbiaceae that includes the rubber tree

Hevea is a genus of flowering plants in the spurge family, Euphorbiaceae, with about ten members. It is also one of many names used commercially for the wood of the most economically important rubber tree, H. brasiliensis. The genus is native to tropical South America but is widely cultivated in other tropical countries and naturalized in several of them. It was first described in 1775.

<i>Ficus elastica</i> Species of Asian fig known as the Indian rubber plant, the rubber bush and other names

Ficus elastica, the rubber fig, rubber bush, rubber tree, rubber plant, or Indian rubber bush, Indian rubber tree, is a species of plant in the fig genus, native to eastern parts of South Asia and southeast Asia. It has become naturalized in Sri Lanka, the West Indies, and the US State of Florida.

Balanophoraceae Family of flowering plants

The Balanophoraceae are a subtropical to tropical family of obligate parasitic flowering plants, notable for their unusual development and formerly obscure affinities. In the broadest circumscription, the family consists of 16 genera. Alternatively, three genera may be split off into the segregate family Mystropetalaceae.

<i>Myrmecodia</i> Genus of epiphytes

Myrmecodia is a genus of epiphytic myrmecophytes, native to Southeast Asia, but also present in Indochina, Malaysia, the Southwest Pacific, the Philippines, Fiji, and extending south to Queensland and Cape York in Australia. It is one of five ant-plant genera in the family Rubiaceae, the others being Anthorrhiza, Hydnophytum, Myrmephytum, and Squamellaria.

<i>Rigidoporus microporus</i> Species of fungus

Rigidoporus microporus is a plant pathogen, known to cause white root rot disease on various tropical crops, such as cacao, cassava, tea, with economical importance on the para rubber tree.

<i>Rhynchospora alba</i> Species of plant

Rhynchospora alba, the white beak-sedge, is a plant in the sedge family, Cyperaceae. It is a tufted herbaceous perennial around 50 cm tall, with white inflorescences that flower in August. The fruit of the sedge is a small achene with a characteristic beak-like cap. It is dispersed by wind or falls by gravity, leading to individuals existing in tight clumps. The species favours wet, acidic and nutrient poor soils, thriving in Sphagnum-dominated bogs, but also peaty grasslands. As such it is often used as a positive indicator for bog and mire ecosystem health.

<i>Hydnora africana</i> Species of flowering plants in the birthwort family Aristolochiaceae

Hydnora africana is an achlorophyllous plant in the subfamily Hydnoroideae, native to southern Africa that is parasitic on the roots of members of the family Euphorbiaceae. It is also called jakkalskos or jackal food. The genus name comes from the Greek word hydnon, which translates to "truffle," and the specific epithet africana means to be from Africa. Molecular data has suggested that Hydnoroideae is a "basal angiosperm" solidifying its place among the more primitive flowering plants. Hydnoraceae are the only angiosperms known to have no leaves or scales and are considered obligate parasites, completely dependent on their hosts to survive. The plant grows underground, except for a fleshy flower that emerges above ground and emits an odor of feces to attract its natural pollinators, dung beetles and carrion beetles. The vegetative body of the plants has been reduced to only consisting of roots and flowers. The flowers act as temporary traps, retaining the beetles that enter long enough for them to pick up pollen.

Euphorbiaceae Family of Eudicot flowering plants

The Euphorbiaceae, the spurge family, are a large family of flowering plants. In common English, they are sometimes called euphorbias, which is also the name of a genus in the family. Most spurges such as Euphorbia paralias are herbs, but some, especially in the tropics, are shrubs or trees, such as Hevea brasiliensis. Some, such as Euphorbia canariensis, are succulent and resemble cacti because of convergent evolution. This family occurs mainly in the tropics, with the majority of the species in the Indo-Malayan region and tropical America a strong second. A large variety occurs in tropical Africa, but they are not as abundant or varied as in the two other tropical regions. However, the Euphorbiaceae also have many species in nontropical areas such as the Mediterranean Basin, the Middle East, South Africa, and the Southern United States.

Plant stem structural axis of a vascular plant

A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, stores nutrients, and produces new living tissue.

<i>Taraxacum kok-saghyz</i> Species of flowering plant

Taraxacum kok-saghyz, often abbreviated as TKS and commonly referred to as the Kazakh dandelion, rubber root, or Russian dandelion, is a species of dandelion native to Kazakhstan, Kirghizia and Uzbekistan, that is notable for its production of high quality rubber. T. kok-saghyz was discovered in Kazakhstan in 1932 by scientists serving the Soviet Union in an effort to find a domestic source of rubber.

<i>Mitrastemon</i> Genus of plants

Mitrastemon is a genus of two widely disjunct species of parasitic plants. It is the only genus within the family Mitrastemonaceae. Mitrastemon species are root endoparasites, which grow on Fagaceae. It is also a non-photosynthetic plant that parasitizes other plants such as Castanopsis sieboldii. The parasitic plant was first discovered by botanist Eizi Matuda during an expedition to Mt. Ovando in the state of Chiapas, Mexico. The different species were originally named by a friend of Matuda, Yamamoto in 1925–1926. Mitrastemon yamamotoi is a protandrous plant. Its flowers go through a male phase before transforming into their final female form. The flowers of M. yamamotoi attract a variety of insects ranging from wasps to flies and beetles. Among these, beetles are the best pollinators for this plant since their visit to the flower would pick up a large amount of pollen and they would pollinate from each of the flowers that they had already visited. The plant is endemic to tropical and subtropical forest regions such as Southeast Asia and Japan.

<i>Osyris compressa</i> A species of flowering plant in the mistletoe family Santalaceae

Osyris compressa is a facultatively hemiparasitic, mainly South African plant of the sandalwood family, Santalaceae. Until recently, the favoured binomial name was Colpoon compressum, but around 2001, the genus Colpoon was included in Osyris on the basis of comparative DNA studies. That assignment is not final, however, and according to the Kew Gardens plant list, Colpoon compressum P.J.Bergius, though still in review, is the accepted name.

<i>Cynomorium</i> Genus of plant of the family Cynomoriaceae

Cynomorium is a genus of parasitic perennial flowering plants in the family Cynomoriaceae. The genus consists of only one species, Cynomorium coccineum. Its placement in the Saxifragales was resolved in 2016 with the help of nuclear, plastid, and mitochondrial sequences obtained from next-generation sequencing. Common names include the misleading Maltese fungus or Maltese mushroom; also desert thumb, red thumb, tarthuth (Bedouin) and suoyang (Chinese). A rare or local species, it grows in dry, rocky or sandy soils, often in salt marshes or other saline habitats close to the coast. It has had a wide variety of uses in European, Arabian and Chinese herbal medicine.

<i>Alocasia cucullata</i> Species of flowering plant

Alocasia cucullata is a species of flowering plant in the arum family known by the common names Chinese taro, Chinese ape, Buddha's hand, and hooded dwarf elephant ear. It is kept as an ornamental plant.

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

Balanophora is a genus of parasitic plants in the family Balanophoraceae found in parts of tropical and temperate Asia, including the Eastern Himalayas, Malesia region, Pacific Islands, Madagascar, and tropical Africa. There are about 20 accepted species, including the newly discovered B. coralliformis. Many species emit an odour which possibly attracts pollinators in the same way that pollinators are attracted to Rafflesia.

<i>Balanophora fungosa</i> Species of plant in the family Balanophoraceae

Balanophora fungosa, sometimes known as fungus root is a flowering plant in the family Balanophoraceae and occurs in South Asia, Southeast Asia, Australia and some Pacific Islands. It is an obligate parasite growing on the roots of rainforest trees. The flowering structure is shaped like a puffball but in fact consists of a globe covered with thousands of tiny female flowers. The globe is surrounded at its base by a much smaller number of male flowers. In flower, the plant emits an odour resembling that of mice.

Hevea guianensis is a species of rubber tree in the genus Hevea, belonging to the family Euphorbiaceae. It is native to the rainforests of Ecuador, Venezuela, the Guyanas, Brazil, Colombia and Peru. It generally grows on well-drained soils or on those that are only lightly inundated, on river banks, in gallery forests, savannah forests and wooded slopes.

Hevea benthamiana is a species of rubber tree in the genus Hevea, belonging to the family Euphorbiaceae. A medium-sized deciduous tree growing to a height of about 27 m (90 ft), it is native to the rainforests of northern Brazil, Colombia and Venezuela.

References

  1. Nickrent, D. Parasitic Plant Classification. The Parasitic Plant Connection. Department of Plant Biology, Southern Illinois University, Carbondale.
  2. 1 2 3 Leistner, O. A. (2005). Balanophoraceae. Archived 2008-11-21 at the Wayback Machine Seed Plants of Southern Tropical Africa: Families and Genera. Southern African Botanical Diversity Network Report No. 26. pg 103.
  3. 1 2 3 Seidemann, Johannes (2005). "Thonningia Vahl – Balanophoraceae". World Spice Plants: Economic Usage, Botany, Taxonomy. Springer. p. 364. ISBN   978-3-540-22279-8.
  4. 1 2 3 Burkill, H. M. (1985). Thonningia sanguinea. The Useful Plants of West Tropical Africa, Vol 1. Royal Botanic Gardens, Kew.
  5. 1 2 3 4 5 6 7 8 9 10 Neuwinger, Hans Dieter (1996). "Thonningia sanguinea Vahl". African Ethnobotany: Poisons and Drugs; Chemistry, Pharmacology, Toxicology. CRC Press. pp. 249–51. ISBN   978-3-8261-0077-2.
  6. Otoide, V. O. (1982). "Thonningia sanguinea— a new parasite on rubber roots". Tropical Pest Management. 28 (2): 186. doi:10.1080/09670878209370698.
  7. Jigam, A. A., et al. (2012). Efficacy of Thonningia Sanguinea Vahl. (Balanophoraceae) root extract against Plasmodium berghei, Plasmodium chabaudi, inflammation and nociception in mice. Journal of Applied Pharmaceutical Science 2(1) 47–51.
  8. Goto, Ryutaro; Yamakoshi, GEN; Matsuzawa, Tetsuro (2012). "A novel brood-site pollination mutualism?: The root holoparasite Thonningia sanguinea (Balanophoraceae) and an inflorescence-feeding fly in the tropical rainforests of West Africa". Plant Species Biology. 27 (2): 164. doi:10.1111/j.1442-1984.2011.00338.x.
  9. Idu, M., et al. (2002). Anatomy of attachment of the root parasite Thonningia sanguinea Vahl. on Hevea brasiliensis. Archived 2013-07-01 at the Wayback Machine Indian Journal of Rubber Research 15(1) 33–35.