Didymocarpus | |
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Didymocarpus oblongus | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Lamiales |
Family: | Gesneriaceae |
Subfamily: | Didymocarpoideae |
Genus: | Didymocarpus Wall. (1819) |
Species [1] | |
110; see text | |
Synonyms [1] | |
|
Didymocarpus [2] [3] is a genus of flowering plants in the family Gesneriaceae and typical of the tribe Didymocarpeae. There are about 100 known species distributed in India, Nepal, Bhutan, Myanmar, southern China, Vietnam, Laos, Cambodia, Thailand, and the Malay Peninsula, with one species extending up to northern Sumatra. Some members of the genus are known for their medicinal properties, especially to cure diseases related to the kidneys. [4]
The members of the genus are typically small perennial, deciduous herbs with annual flowering stems. Flowering shoots are produced from the basal rootstock or condensed rhizome during the onset of rainy season which dies after producing the fruits. Leaves are opposite, decussate and mostly unequal within pairs. The inflorescence is pair-flowered cyme, typical of the Gesneriad family, with few to many flowers. The calyx is often united for more than half of its length or rarely free to the base. The corolla is tubular, widening towards the mouth with a bilabiate limbs. The flowers are devoid of nectar are subtended by brightly colored bracteoles. Floral color can be hues of reds, oranges, yellows, and violet often with stripes on the lobes. The flower has two stamens with slender filaments and cohering anthers. The ovary is cylindrical with often with stipe and an entirely capitate stigma. Fruit capsules are straight, orthocarpic, bivalved, and dehisce loculicidally.
The genus Didymocarpus was described by Nathaniel Wallich in 1819 based on specimens he received from Nepal. Due to lack of a clear definition of the generic boundaries, more than 180 species and 450 names were affiliated to this genus over time. [5] These included many morphologically distinct species from Madagascar, Western Ghats of India and Southeast Asia. The genus was remodeled and redefined by Weber and Burt in 1998 with about 80 species. Recently, many new species were described from India, China and Thailand and the genus now comprises about 100 species. [6] [7]
110 species are accepted. [1]
Aeschynanthus is a genus of about 150 species of evergreen subtropical and tropical plants in the family Gesneriaceae. They are usually trailing epiphytes with brightly colored flowers that are pollinated by sunbirds. The genus name comes from a contraction of aischuno and anthos (flower). The common name for some species is lipstick plant, which comes from the appearance of the developing buds emerging from the calyces. A full list of the accepted species and their synonyms can be found in the Smithsonian Institution's World Checklist of Gesneriaceae.
Petrocosmea is a genus of the family Gesneriaceae, the African violet family. Most of the species within this genus are endemic to high-altitude areas in Western China, although some are native to other parts of Asia. It is a rosette forming genus that generally grows on wet mossy rocks or forests.
Briggsia was a genus in the family Gesneriacae that consisted of 22 species of herbaceous perennials, native to the Himalayas, China and Vietnam. The genus is no longer recognized, with all of its member species having been relocated to other genera, including Glabrella, Loxostigma, and Oreocharis.
Primulina is a genus of flowering plants in the African violet family Gesneriaceae. In 2011 the genus was expanded with the transfer of many species that had previously been placed in the genus Chirita. In 2016, five species were moved to the genus Deinostigma.
Globba is a genus of plants in the ginger family. It contains about 100 species, native to China, the Indian Subcontinent, Southeast Asia, New Guinea, the Bismarck Archipelago and Queensland.
Rhynchoglossum is a genus of plant in family Gesneriaceae. In recent times, members of the former genus Klugia are also included. Species within the broader genus are found in India, southern China to New Guinea and about three species in tropical America. The genus has a leaf arrangement that is termed as alternate-distichous and the leaves are asymmetric in shape. The flowers have two lips. The older genus Klugia had four stamens compared to the typical two but Klugia from southern India are found to be very close based on molecular evidence.
Microchirita is a genus of flowering plants in the family Gesneriaceae, subfamily Didymocarpoideae.
Henckelia is a genus of flowering plants in the family Gesneriaceae. Many of its species were formerly placed in Didymocarpus sect. Orthoboea and in the genus Chirita. Many species formerly placed in Henckelia have been moved to Codonoboea and Loxocarpus.
Codonoboea is a genus of flowering plants in the family Gesneriaceae. It includes 129 species which range from Myanmar and Thailand through northern Malesia to New Guinea.
Loxocarpus is a genus of flowering plants in the family Gesneriaceae. It includes 26 species native to Malesia, ranging from southern Thailand to Peninsular Malaysia, Sumatra, and Borneo. Many of its species were formerly placed in the genus Henckelia.
Deinostigma is a genus in the family Gesneriaceae, native to Vietnam and Southern China. In 2016 the genus was expanded with the transfer of several species that had previously been place in the genus Primulina, to include a total of seven species.
Rhynchotechum is a genus of plants in the family Gesneriaceae, subfamily Didymocarpoideae. Species distribution records are mostly from India, Sri Lanka, China through to southern Japan, Indo-China and Malesia through to New Guinea.
Lysionotus is a genus of flowering plants in the family Gesneriaceae. It occurs in the Himalayas, China, Japan, and Southeast Asia. The genus was described by David Don in 1822.
Paraboea are a genus of flowering plants in the African violet family Gesneriaceae, native to southern China, Assam, Indochina, and Malesia. They were recircumscribed from Boea in 2016.
Damrongia is a genus of flowering plants in the Gesneriad family, centered in Thailand and found in southern China, Southeast Asia, and Sumatra. Species were reassigned to it in 2016 in a revision of Loxocarpinae.
Tetraphyllum is a genus of flowering plants belonging to the family Gesneriaceae. As of April 2021, there was no consensus as to whether the correct scientific name for the genus is Tetraphyllum or Tetraphylloides, some sources using the former and some the latter.
Loxostigma is a genus of flowering plants belonging to the family Gesneriaceae.
Maharanga is a genus of flowering plants belonging to the family Boraginaceae.
Ornithoboea is a genus of flowering plants belonging to the family Gesneriaceae.
Oreocharis is a genus of flowering plants in the family Gesneriaceae. It includes 154 species native to Asia, which range from the Eastern Himalayas and Tibet through Indochina and China to Japan.