| Calyptrion | |
|---|---|
 | |
| Calyptrion arboreum | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Violaceae |
| Subfamily: | Violoideae |
| Tribe: | Violeae |
| Genus: | Calyptrion Ging. [1] |
| Type species | |
| Calyptrion arboreum (L.) Paula-Souza | |
| Species | |
| Synonyms [2] | |
| |
Calyptrion is a genus of flowering plants in the violet family Violaceae, with four known species.
Lianas with oblong-lanceolate to ovate leaves. The flowers are situated in axillary or terminal racemes, rarely solitary, with white corollas, and are strongly zygomorphic (bilaterally symmetrical), the bottom petal being slightly longer than the others and more weakly differentiated, and with a very long spur. The stamens have free filaments, with the lowest two being calcarate (spurred) and possessing a large dorsal connective appendage that is entire and oblong-ovate. In the gynoecium, the style is filiform (threadlike). The fruit is a thick-walled capsule that is semi-dehiscent. There are numerous seeds per carpel, that are asymmetrically orbicular in outline and strongly flattened. [3] [4] [5]
The genus Calyptrion was first described by Gingins in 1823, [6] that he renamed from the preexisting Viola hybanthus described by Aublet in 1775, as a distinct new genus. This is now referred to as Calyptrion arboreum, and is therefore the type species. At that time it was the only known liana in the Violaceae. Gingins provided detailed descriptions of the Violaceae (then also known as Violarieae) in a number of subsequent texts, including the Prodromus of Candolle (1824), with eight species. [7] At the same time, Martius described the genus as Corynostylis, [8] and this name was erroneously used over the next 200 years, despite the earlier name, Gingins treating it as a synonym. The original name was restored in 2014. [9]
Early taxonomic schemes such as Lindley (1846) [10] and Bentham and Hooker (1862) [11] placed Corynostylis/Calyptrion within subfamily Violoideae, tribe Violeae, subtribe Violinae. [4] [9]
Calyptrion is one of four lianescent genera in Violaceae, together with Agatea A.Gray , Anchietea A.St.-Hil. and Hybanthopsis Paula-Souza. In earlier classifications primarily based on floral morphology these were distributed among separate subtribes, but molecular phylogenetic studies has now grouped them together into a single lianescent clade, one of four within the family. Earlier schemes placed Corynostylis/Calyptrion within subfamily Violoideae, tribe Violeae, subtribe Violinae. [9]
The genus is named from the Greek words kalyptra, cover, and ion, violet. [12] [13]
There are four accepted species. [14]
Calyptrion is native to Amazonia, although Calyptrion arboreum extends north up to Mexico. they are found along the margins of black water rivers. [9] [2]
The Dioscoreales are an order of monocotyledonous flowering plants, organized under modern classification systems, such as the Angiosperm Phylogeny Group or the Angiosperm Phylogeny Web. Among monocot plants, Dioscoreales are grouped with the lilioid monocots, wherein they are a sister group to the Pandanales. In total, the order Dioscoreales comprises three families, 22 genera and about 850 species.
The Malpighiales comprise one of the largest orders of flowering plants, containing about 36 families and more than 16,000 species, about 7.8% of the eudicots. The order is very diverse, containing plants as different as the willow, violet, poinsettia, manchineel, rafflesia and coca plant, and are hard to recognize except with molecular phylogenetic evidence. It is not part of any of the classification systems based only on plant morphology. Molecular clock calculations estimate the origin of stem group Malpighiales at around 100 million years ago (Mya) and the origin of crown group Malpighiales at about 90 Mya.
Order is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families.
Viola is a genus of flowering plants in the violet family Violaceae. It is the largest genus in the family, containing over 680 species. Most species are found in the temperate Northern Hemisphere; however, some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes.
The Salicaceae is the willow family of flowering plants. The traditional family included the willows, poplar, aspen, and cottonwoods. Genetic studies summarized by the Angiosperm Phylogeny Group (APG) have greatly expanded the circumscription of the family to contain 56 genera and about 1220 species, including the Scyphostegiaceae and many of the former Flacourtiaceae.
Violaceae is a family of flowering plants established in 1802, consisting of about 1000 species in about 25 genera. It takes its name from the genus Viola, the violets and pansies.
Augustin Pyramusde Candolle was a Swiss botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple of years de Candolle had established a new genus, and he went on to document hundreds of plant families and create a new natural plant classification system. Although de Candolle's main focus was botany, he also contributed to related fields such as phytogeography, agronomy, paleontology, medical botany, and economic botany.
Carl Friedrich Philipp von Martius was a German botanist and explorer. Between 1817 and 1820, he travelled 10,000 km through Brazil while collecting botanical specimens. His most important work was a comprehensive flora of Brazil, Flora Brasiliensis, which he initiated in 1840 and was completed posthumously in 1906.
Ochnaceae is a family of flowering plants in the order Malpighiales. In the APG III system of classification of flowering plants, Ochnaceae is defined broadly, to include about 550 species, and encompasses what some taxonomists have treated as the separate families Medusagynaceae and Quiinaceae. In a phylogenetic study that was published in 2014, Ochnaceae was recognized in the broad sense, but two works published after APG III have accepted the small families Medusagynaceae and Quiinaceae. These have not been accepted by APG IV (2016).
A taxonomic system, the Bentham & Hooker system for seed plants, was published in Bentham and Hooker's Genera plantarum ad exemplaria imprimis in herbariis kewensibus servata definita in three volumes between 1862 and 1883.
Lilianae is a botanical name for a superorder of flowering plants. Such a superorder of necessity includes the type family Liliaceae. Terminations at the rank of superorder are not standardized by the International Code of Nomenclature for algae, fungi, and plants (ICN), although the suffix -anae has been proposed.
The Amaryllidaceae are a family of herbaceous, mainly perennial and bulbous flowering plants in the monocot order Asparagales. The family takes its name from the genus Amaryllis and is commonly known as the amaryllis family. The leaves are usually linear, and the flowers are usually bisexual and symmetrical, arranged in umbels on the stem. The petals and sepals are undifferentiated as tepals, which may be fused at the base into a floral tube. Some also display a corona. Allyl sulfide compounds produce the characteristic odour of the onion subfamily (Allioideae).
Amaryllidoideae is a subfamily of monocot flowering plants in the family Amaryllidaceae, order Asparagales. The most recent APG classification, APG III, takes a broad view of the Amaryllidaceae, which then has three subfamilies, one of which is Amaryllidoideae, and the others are Allioideae and Agapanthoideae. The subfamily consists of about seventy genera, with over eight hundred species, and a worldwide distribution.
Frédéric Charles Jean Gingins de la Sarraz was a Swiss historian and botanist.
Isodendrion is a plant genus in the family Violaceae.
Schweiggeria is a genus of flowering plants in the violet family Violaceae, with one or two species, found in eastern Brazil.
Noisettia is a genus of flowering plants in the violet family Violaceae, with a single known species.
Agatea is a genus of flowering plants in the violet family Violaceae, with seven accepted species, found in New Guinea and New Caledonia.
Anchietea is a genus of flowering plants in the violet family Violaceae, with six accepted species, found in tropical South America.
Hybanthopsis is a genus of flowering plants in the violet family Violaceae, with a single accepted species, found in north-east Brazil.