Swartzia | |
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Swartzia langsdorffii | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fabales |
Family: | Fabaceae |
Subfamily: | Faboideae |
Tribe: | Swartzieae |
Genus: | Swartzia Schreb. (1791), nom. cons. |
Species | |
See text | |
Synonyms [1] | |
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Swartzia is a genus of flowering plants in the family Fabaceae. It was named in honor of Swedish botanist Olof Swartz and contains about 200 species. Swartzia is restricted in its geographical distribution to the New World Tropics, where it occurs primarily in lowland rainforests, but also in savannas, pre-montane forests, and tropical dry forests. While it can be found throughout the wet lowlands from Mexico and the Caribbean islands to southern Brazil and Bolivia, Swartzia is most abundant and species-rich in Amazonia, where 10–20 species may co-occur at a single site. The species of Swartzia are mostly trees, ranging from small understory treelets to large canopy emergents. Some species, especially in savannas, are mult-stemmed shrubs.
Many Swartzia fossils from the middle Eocene epoch are known from the United States. 5 fossil dehiscent seed pods and 50 fossil leaflets have been described from the Warman and Lawrence clay pits in Weakley and the Henry Counties, Tennessee. In addition 6 leaflets have been described from the New Lawrence and Miller clay pits in Henry County, Tennessee. [2]
More than 200 species have been described: [1] [3] [4]
Recent phylogenetic analyses have revealed several well-supported clades within Swartzia that roughly correspond to previously-erected sections and series in the genus. [8]
The following species may or may not be valid: [9]
Cassia is a genus of flowering plants in the legume family, Fabaceae, and the subfamily Caesalpinioideae. Species are known commonly as cassias. The genus includes 37 species and has a pantropical distribution. Species of the genera Senna and Chamaecrista were previously included in Cassia. Cassia now generally includes the largest species of the legume subtribe Cassiinae, usually mid-sized to tall trees.
Calliandra is a genus of flowering plants in the pea family, Fabaceae, in the mimosoid clade of the subfamily Caesalpinioideae. It contains about 140 species that are native to tropical and subtropical regions of the Americas.
Senna, the sennas, is a large genus of flowering plants in the legume family. This diverse genus is native throughout the tropics, with a small number of species in temperate regions. The number of species is estimated to be from about 260 to 350. The type species for the genus is Senna alexandrina. About 50 species of Senna are known in cultivation.
Piptadenia is a genus of tropical shrubs and trees of the family Fabaceae. It includes 28 species native to the tropical Americas, ranging from central Mexico to southern Brazil and northwestern Argentina.
Chamaecrista is a genus of flowering plants in the pea family, Fabaceae, subfamily Caesalpinioideae. Members of the genus are commonly known as sensitive pea. Several species are capable of rapid plant movement. Unlike the related genera Cassia and Senna, members of Chamaecrista form root nodules.
Dimorphandra is a genus of legume in the family Fabaceae, subfamily Caesalpinioideae. It includes 26 species native to northern South America, ranging from Colombia and Venezuela to Bolivia, Paraguay, and southeastern Brazil.
Machaerium is a genus of flowering plants in the family Fabaceae, and was recently assigned to the informal monophyletic Dalbergia clade of the Dalbergieae. It contains the following species:
Macrolobium is a legume genus in the subfamily Detarioideae. It is a tropical genus with about 80 species. Half occur in Brazil, where they are common in the floodplains of the Amazonian Basin. Members of the genus are used as ornamentals and for their wood.
Macrosamanea is a genus of flowering plant in the legume family, Fabaceae. It includes 11 species of trees and shrubs native to northern South America. The genus is most diverse and numerous in the Amazon Basin, extending into the Orinoco basin and the Guianas. Typical habitat is tropical rain forest, mostly riparian and seasonally-flooded. Two species are native to seasonally-inundated wooded grassland (savanna) on sandy soils. The genus belongs to the mimosoid clade of the subfamily Caesalpinioideae.
Ormosia is a genus of legumes. 131 living species, mostly trees or large shrubs, are native to the tropical Americas, from southwestern Mexico to Bolivia and southern Brazil, to southern, southeastern, and eastern Asia, and to New Guinea and Queensland. Most are tropical, while some extend into temperate temperate regions of China. A few species are threatened by habitat destruction, while the Hainan ormosia is probably extinct already.
Platymiscium is a genus of flowering plants in the family Fabaceae, and was recently assigned to the informal monophyletic Pterocarpus clade within the Dalbergieae. It has a Neotropical distribution, from northern Mexico to southern Brazil. Platymiscium is the only genus in the family with opposite leaves in all its species. Its wood has various uses, mostly for constructions and furniture. It's wood is also sometimes referred to as Granadillo, Macacauba, Macawood, Hormigo, or Orange Agate.
Tachigali is a flowering plant genus in the legume family (Fabaceae). It includes 74 species of trees native to the tropical Americas, ranging from Nicaragua to Bolivia, Paraguay, and southern Brazil. Typical habitats include tropical rain forest, lower montane forest, seasonally-flooded and non-flooded evergreen lowland forest and woodland, gallery and riparian forest, sometimes on white sands, cerrado and other dry woodland, and rocky grassland.
Zygia is a genus of flowering plants in the family Fabaceae. It includes 60 species of tres and shrubs native to the tropical Americas, from Southern Mexico and Cuba to northern Argentina. Typical habitats are tropical forest and coastal zones, generally below 900 meters elevation with a few species extending up to 2800 meters. It belongs to the mimosoid clade of the subfamily Caesalpinioideae.
Dicymbe is a genus of 20 species of canopy trees in the family Fabaceae, within subfamily Detarioideae. It is found throughout the Guyana Shield region and parts of W Amazonia. Certain species within the genus are strongly associated with ectomycorrhizal fungi.
Paloue is a genus of flowering plants in the family Fabaceae. It belongs to the subfamily Detarioideae. The genera was first created with the description of Paloue guianensis by Aublet in 1775.
The tribe Swartzieae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae or Papilionaceae. Traditionally this tribe has been used as a wastebasket taxon to accommodate genera of Faboideae which exhibit actinomorphic, rather than zygomorphic floral symmetry and/or incompletely differentiated petals and free stamens. It was recently revised and most of its genera were redistributed to other tribes. Under its new circumscription, this clade is consistently resolved in molecular phylogenies. Members of this tribe possess "non-papilionate swartzioid flowers[…]largely characterized by a tendency to lack petals combined with a profusion and elaboration of free stamens" and a "lack of unidirectional order in the initiation of the stamens". They also have "complete or near complete fusion of sepals resulting from intercalary growth early in development, relatively numerous stamens, and a single or no petal, with other petals not at all apparent in development." The tribe is predicted to have diverged from the other legume lineages 48.9±2.8 million years ago.
Schnella is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Cercidoideae. All of its species are neotropical lianas.
Jupunba is a genus in the family Fabaceae. It is native to region from South Mexico extending to tropical America.