Adansonia in the context of "Pachycaul"

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⭐ Core Definition: Adansonia

Adansonia is a genus of medium-to-large deciduous trees known as baobabs (/ˈbbæb/ or /ˈbbæb/). The eight species of Adansonia are native to Africa, Australia, and Madagascar but have also been introduced to other regions of the world, including Barbados, where several of the baobabs there are suspected to have originated from Africa. Other baobabs have been introduced to Asia. A genomic and ecological analysis further suggests that the genus itself originated from Madagascar.

The generic name Adansonia honours Michel Adanson, the French naturalist and explorer who provided the first detailed botanical description and illustrations of Adansonia digitata. The baobab, however, is also known as the "upside down tree," a name attributable to the trees' overall appearance and historical myths. Baobabs are among the longest-lived of vascular plants and have large flowers that are reproductive for a maximum of 15 hours. The flowers open around dusk with sufficiently rapid movement that is detectable by the naked eye. The fruits are large, oval to round and berry-like, and hold kidney-shaped seeds in a dry, pulpy matrix.

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👉 Adansonia in the context of Pachycaul

Pachycauls are plants with a disproportionately thick trunk, for their height, and relatively few branches. With certain pachycaul species, particularly the more succulent varieties, they are commonly referred to as "caudiciformes", a reference to their trunk development of a moisture-filled caudex for periods of drought. By comparison, trees with thin twigs, such as oaks (Quercus), maples (Acer) and Eucalyptus, are called leptocauls; those with moderately thick twigs, such as Plumeria, are called mesocauls. Pachycauls can be the product of exceptional primary growth (as with Arecaceae and Cycadaceae) or disproportionate secondary growth, as with the baobabs (Adansonia). The word is derived from the Greek pachy- (meaning "thick" or "stout") and the Latin caulis (meaning "stem").

All of the arboreal (treelike) species of Cactaceae are pachycauls, as are most of the Arecaceae, Cycadaceae and Pandanus. The most extreme pachycauls are the floodplains, or river-bottom, varieties of the African palmyra (Borassus aethiopum), with primary growth up to 2.1 m (6 ft 11 in) thick, and the Coquito palm (Jubaea chilensis), with its primary growth measuring up to 1.8 m (5 ft 11 in) thick. The most pachycaulous cycad is Cycas thouarsii at up to 150 cm (59 in) diameter. The tallest pachycaul is the Andean wax palm (Ceroxylon quindiuense), at heights of up to 66 m (217 ft), and around 41 cm (16 in) in diameter. The most pachycaulous cactus are the barrel cacti (Echinocactus platyacanthus), with primary growth up to 1.3 m (4 ft 3 in) diameter. The largest caudiciforme-type pachycaul is the African baobab (Adansonia digitata); one specimen of which, called the Glencoe baobab (from Hoedspruit, Limpopo, South Africa) has a basal diameter (not girth) of 16 m (52 ft). However, this particular tree has suffered a severe trauma and is dying. Pachycauls also differ greatly in their rates of growth, from the half-man tree (Pachypodium namaquanum) which grows only 5 mm (0.20 in) each year to the palm Pigafetta elata which can grow 2.7 m (8 ft 10 in) or more in one year.

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Adansonia in the context of Kirindy Forest

The Kirindy Forest (or Kirindy Private Reserve) is a private nature reserve situated in western Madagascar, about 50 km northeast of the town of Morondava, near Ambivy. The forest reserve falls within the boundaries of the Kirindy Mitea National Park, which spreads further to the south.

The forest goes through two general seasons each year: the dry season, from March to December, and the rainy season, from December to March. The forest is home to a wide variety of animals, from lemurs and fossas to geckos and chameleons, and numerous birds, the majority of which are found nowhere else. Many species of iconic plants are also found in the region, from baobabs and spiny palms to Alluaudia and euphorbs.

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Adansonia in the context of Tarangire National Park

Tarangire National Park is a national park in Tanzania's Manyara Region. The name of the park originates from the Tarangire River that crosses the park. The Tarangire River is the primary source of fresh water for wild animals in the Tarangire Ecosystem during the annual dry season. The Tarangire Ecosystem is defined by the long-distance migration of wildebeest and zebras. During the dry season thousands of animals concentrate in Tarangire National Park from the surrounding wet-season dispersal and calving areas.

It covers an area of approximately 2,850 km (1,100 sq mi). The landscape is composed of granitic ridges, river valley, and swamps. Vegetation is a mix of Acacia woodland, Combretum woodland, seasonally flooded grassland, and Adansonia trees.

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Adansonia in the context of Bombacaceae

Bombacaceae were long recognised as a family of flowering plants or Angiospermae. The family name was based on the type genus Bombax. As is true for many botanical names, circumscription and status of the taxon has varied with taxonomic point of view, and currently the preference is to transfer most of the erstwhile family Bombacaceae to the subfamily Bombacoideae within the family Malvaceae in the order Malvales. The rest of the family were transferred to other taxa, notably the new family Durionaceae. Irrespective of current taxonomic status, many of the species originally included in the Bombacaceae are of considerable ecological, historical, horticultural, and economic importance, such as balsa, kapok, baobab and durian.

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Adansonia in the context of Adansonia digitata

Adansonia digitata, the African baobab, is the most widespread tree species of the genus Adansonia, the baobabs, and is native to the African continent and the southern Arabian Peninsula (Yemen, Oman). These are long-lived pachycauls; radiocarbon dating has shown at least one individual to be 1,275 years old. They are typically found in dry, hot savannas of sub-Saharan Africa, where they dominate the landscape and reveal the presence of a watercourse from afar. They have traditionally been valued as sources of food, water, health remedies or places of shelter and are a key food source for many animals. They are steeped in legend and superstition. In recent years, many of the largest, oldest trees have died, for unknown reasons. Other common names for the baobab include monkey-bread tree, upside-down tree, and cream of tartar tree.

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