Linnaeoideae | |
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Abelia parvifolia in cultivation | |
Linnaea borealis | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Dipsacales |
Family: | Caprifoliaceae |
Subfamily: | Linnaeoideae Raf. |
Genera | |
Synonyms [1] | |
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Linnaeoideae is a subfamily of the family Caprifoliaceae. It was formerly treated as the separate family Linnaeaceae. Five or six genera are placed in the subfamily, which ranges from creeping to erect shrubs. Most genera and species are native to East Asia, particularly China. One genus is native to Mexico, and Linnaea borealis occurs around the Northern Hemisphere.
Linnaeoideae consists of shrubby plants that are mainly deciduous, but may be evergreen. Some, such as Linnaea, are creeping, others, such as Abelia, may be up to 4 m tall. The usually paired flowers are surrounded by an 'epicalyx' – a structure resembling the calyx that is composed of involucral bracts. A nectary is present inside the tube of the corolla. Two of the three or four locules of the inferior ovary are sterile and are empty at maturity. There are four stamens. The fruit is an achene, topped by usually persistent sepals. [2] [1] [3]
The subfamily Linnaeoideae was erected by Constantine Samuel Rafinesque in 1820. In 1998, Anders Backlund raised it to the full family Linnaeaceae. [4] The APG IV system reduced it again to a subfamily of Caprifoliaceae, a position supported in a 2024 review of the systematics of the Caprifoliaceae. [5]
Six genera were included in a 2015 molecular phylogenetic study of the subfamily. [3] As of January 2024 [update] , the same genera were included by the Angiosperm Phylogeny Website, although two of them were synonymized. [6] As of January 2024 [update] , all six genera were accepted by Plants of the World Online. [7]
Some older sources also include the genus Zabelia , [2] but this is excluded in other sources, which may place it in its own subfamily, Zabelioideae. [3]
A study published in 2015 included the following cladogram showing the possible relationships among the genera included in the subfamily. Four purely Asian genera formed a subclade, distinct from the circumboreal Linnaea and the Mexican Vesalea. [3]
Linnaeoideae |
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Linnaeoideae has a disjoint distribution. Four genera (Abelia, Diabelia, Dipelta, and Kolkwitzia) are native to East Asia, primarily China. Vesalea is native to Mexico. The monospecific genus Linnaea has a very wide distribution throughout the subarctic and temperate Northern Hemisphere. [3]
Some of the shrubby species are grown as ornamental plants. As of December 2024 [update] , five cultivars of Abelia had gained the Royal Horticultural Society's Award of Garden Merit, as had one species of Dipelta, one cultivar of Kolkwitzia, and one species of Vesalea. [8]
The Solanales are an order of flowering plants, included in the asterid group of the eudicots. Well-known members of Solanales include potatoes, eggplants, tomatoes, chilli peppers, tobacco, petunias, nightshades, morning glory, and sweet potato. Some older sources used the name Polemoniales for this order.
The Magnoliaceae are a flowering plant family, the magnolia family, in the order Magnoliales. It consists of two genera: Magnolia and Liriodendron.
The Caprifoliaceae or honeysuckle family is a clade of dicotyledonous flowering plants consisting of about 860 species in 33 to 42 genera, with a nearly cosmopolitan distribution. Centres of diversity are found in eastern North America and eastern Asia, while they are absent in tropical and southern Africa.
Acorus is a genus of monocot flowering plants. This genus was once placed within the family Araceae (aroids), but more recent classifications place it in its own family Acoraceae and order Acorales, of which it is the sole genus of the oldest surviving line of monocots. Some older studies indicated that it was placed in a lineage, that also includes aroids (Araceae), Tofieldiaceae, and several families of aquatic monocots. However, modern phylogenetic studies demonstrate that Acorus is sister to all other monocots. Common names include calamus and sweet flag.
Abelia is a genus of flowering plants in the honeysuckle family, Caprifoliaceae. The genus currently includes six species native to China, Taiwan, and Vietnam.
Asphodeloideae is a subfamily of the monocot family Asphodelaceae in the order Asparagales. It has previously been treated as a separate family, Asphodelaceae sensu stricto. The family Asphodelaceae has now been proposed to be a nomen conservandum, and the proposal has been recommended for ratification in 2017. In that case, Asphodelaceae will have priority over Xanthorrhoeaceae. This is reflected in the APG IV family lists.
Linnaea borealis is a species of flowering plant in the family Caprifoliaceae. It is the only species in the genus Linnaea. It is a boreal to subarctic woodland subshrub, commonly known as twinflower.
Theophrastoideae is a small subfamily of flowering plants in the family Primulaceae. It was formerly recognized as a separate family Theophrastaceae. As previously circumscribed, the family consisted of eight genera and 95 species of trees or shrubs, native to tropical regions of the Americas.
James Lauritz Reveal was a U.S. botanist best known for his contributions to the genus Eriogonum and for his work on suprageneric names. His website, at PlantSystematics.org, also presents material on plant taxonomy including the Reveal system. He published extensively on North American flora, was a member of the Angiosperm Phylogeny Group, and was one of the authors of the APG II and APG III classifications.
The subfamily Dryadoideae consists of four genera in the family Rosaceae, all of which contain representative species with root nodules that host the nitrogen-fixing bacterium Frankia. They are subshrubs, shrubs, or small trees with a base chromosome number of 9, whose fruits are either an achene or an aggregate of achenes. It includes five genera, all of which except the first only occur in North America.
Frankenia is the only genus in the Frankeniaceae family of flowering plants. Other genera have been recognized within the family, such as Anthobryum, Hypericopsis and Niederleinia, but molecular phylogenetic studies have consistently shown that they all belong inside Frankenia. Frankenia comprises about 70–80 species of shrubs, subshrubs and herbaceous plants, adapted to saline and dry environments throughout temperate and subtropical regions. A few species are in cultivation as ornamental plants.
Diabelia spathulata, synonym Abelia spathulata, is a species of flowering plant in the honeysuckle family (Caprifoliaceae). It is a shrub native to southern Korea and central and southern Japan.
Vesalea floribunda, also known as Mexican abelia, is a species of flowering plant in the honeysuckle family, Caprifoliaceae. It is a shrub native to southern Mexico, ranging from central Veracruz to northern Oaxaca and southeastern Chiapas.
Cneoroideae is a subfamily of flowering plants that belongs to the family Rutaceae. The subfamilies Dictyolomatoideae and Spathelioideae are now included in the subfamily Cneoroideae.
Dipelta floribunda, synonym Linnaea dipelta, is a species of deciduous shrub in the family Caprifoliaceae. It is native to central and east-central China. In late spring and early summer it produces masses of white trumpet-shaped flowers with orange throats.
Aloeae is a tribe of succulent plants in the subfamily Asphodeloideae of the family Asphodelaceae, consisting of the aloes and their close relatives. The taxon may also be treated as the subfamily Alooideae by those botanists who retain the narrower circumscription of Asphodelaceae adopted prior to the APG III system. Typically, plants have rosettes of more or less succulent leaves, with or without a distinct stem. Their flowers are arranged in racemes and tend to be either small and pale, pollinated by insects, or larger and more brightly coloured, pollinated by birds. As of 2017, 11 genera are recognized, most created since 2010 by splitting off another five genera from Aloe and another two from Haworthia. Only two genera, Aloe and Aloidendron, are native outside southern Africa, extending northwards to the Arabian Peninsula. Seven genera are restricted to South Africa, some with small ranges. Members of the Aloeae are cultivated by succulent plant enthusiasts; Aloe species especially are used in temperate climates as ornamental garden plants. Some species are used in traditional medicine. Aloe vera and Aloe ferox are cultivated for their extracts, whose uses include moisturizers and emollients in cosmetics.
The Didymocarpoideae are a subfamily of plants in the family Gesneriaceae. It was formerly the subfamily Cyrtandroideae. This subfamily consists mostly of tropical and subtropical Old World genera, found in Africa, Asia and the Pacific. One species is native to Central and South America.
The Gesnerioideae are a subfamily of plants in the family Gesneriaceae: based on the type genus Gesneria. Although genera typically originate in the New World, some species have become widely distributed as ornamental plants.
The Echinocereeae are a tribe of cacti in the subfamily Cactoideae. Since 2006, the tribe has included the former tribe Pachycereeae in many treatments of cactus classification. The exact circumscription of the tribe has been subject to considerable change, particularly since molecular phylogenetic approaches have been used in determining classifications, and remains uncertain. The tribe includes large treelike species, such as the saguaro, as well as shorter shrubby species. Most members of the tribe are found in desert regions, particularly in Mexico and the southwestern United States.
Epacridoideae is a subfamily of the family Ericaceae. The name StyphelioideaeSweet is also used. The subfamily contains around 35 genera and 545 species. Many species are found in Australasia, others occurring northwards through the Pacific to Southeast Asia, with a small number in South America.