| Phylohydrax | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Subfamily: | Rubioideae |
| Tribe: | Spermacoceae |
| Genus: | Phylohydrax Puff [1] |
| Type species | |
| Phylohydrax carnosa | |
Phylohydrax is a genus of plants in the family Rubiaceae. Its species are native to Madagascar, Tanzania and South Africa. [1]
The genus Phylohydrax was established by Christian Puff in 1986 to accommodate two species previously placed in the genus Hydrophylax . The two genera were distinguished on morphological grounds, in particular the detailed structure of the flowers. Phylohydrax species are heterostylous unlike those of Hydrophylax. [2] Puff placed the genus in the tribe Spermacoceae, a placement supported by more recent sources. [3]
As of March 2023 [update] , Plants of the World Online accepted two species: [1]
The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules and sympetalous actinomorphic flowers. The family contains about 13,500 species in about 620 genera, which makes it the fourth-largest angiosperm family. Rubiaceae has a cosmopolitan distribution; however, the largest species diversity is concentrated in the tropics and subtropics. Economically important genera include Coffea, the source of coffee, Cinchona, the source of the antimalarial alkaloid quinine, ornamental cultivars, and historically some dye plants.
Spirostachys is a plant genus of the family Euphorbiaceae first described as a genus in 1850. It is native to Africa. Zuloaga, F. O., O. Morrone, M. J. Belgrano, C. Marticorena & E. Marchesi. (eds.) 2008. Catálogo de las plantas vasculares del Cono Sur. Monographs in systematic botany from the Missouri Botanical Garden 107(1–3): i–xcvi, 1–3348.
Antirhea is a genus of flowering plants in the family Rubiaceae.
Carphalea is a genus of flowering plants in the family Rubiaceae. It is endemic to Madagascar.
Kohautia is a genus of flowering plants in the family Rubiaceae. They are native to tropical areas of Asia, Africa, and Madagascar. Thirty-one species are known. The type species for the genus is Kohautia senegalensis.
Burnatia is a genus in the family Alismataceae. It includes only one currently recognized species, Burnatia enneandra. It is native to tropical and southern Africa from Senegal to Tanzania to South Africa. Among genera of the Alismataceae, it can be distinguished by not having a differentiated perianth, and being dioecious, with male and female flowers on separate individuals. Male flowers have 6 to 9 stamens and female flowers have many carpels and up to 2 staminodia.
Vanguerieae is a tribe of flowering plants in the family Rubiaceae and contains about 655 species in 30 genera. It is one of the most species-rich groups within the family and it is distributed across the Paleotropics.
Kadua is a genus of flowering plants in the family Rubiaceae. It comprises 29 species, all restricted to Polynesia. Twenty-two of these are endemic to the Hawaiian Islands. Some of the species are common at high elevation. Others are single-island endemics or very rare, and a few are probably extinct. Kadua affinis is widely distributed in Hawaii and is polymorphic. The type species for the genus is Kadua acuminata.
Vangueria madagascariensis, commonly known by the names Spanish-tamarind, tamarind-of-the-Indies, or voa vanga, is a species of flowering plant in the family Rubiaceae native to the African continent having edible fruit. It is the type species of the genus Vangueria and was described in 1791 by Johann Friedrich Gmelin.
Blotiella is a genus of ferns in the family Dennstaedtiaceae described as a genus in 1962. The genus was named in honor of Marie Laure Tardieu-Blot (1902–1998), who was a French pteridologist.
Danais is a genus of flowering plants in the family Rubiaceae. Most species are native to Madagascar; at least three others are distributed in Tanzania, Comoros, and the Mascarene Islands.
Stapelianthus is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1933. The entire genus is endemic to Madagascar and is concentrated in the far south of the island.
Sagittaria guayanensis, the Guyanese arrowhead, is an aquatic plant species. It is predominantly tropical, native to Mexico, Central America, the West Indies, and much of South America, as well as West Africa, south and southeast Asia, plus Sudan and Madagascar. It was unknown in the United States until a few populations were reported from Louisiana in 1969.
Thamnoldenlandia is a genus of plants in the Rubiaceae. It contains only one known species, Thamnoldenlandia ambovombensis, endemic to Madagascar.
Jovetia is a monotypic genus of plants in the family Rubiaceae. It contains only one currently accepted species, Jovetia humilis, endemic to Madagascar.
Galium mexicanum is a species of plant in the family Rubiaceae. It has a widespread distribution from British Columbia south to Ecuador.
Galium proliferum, also known as limestone bedstraw, is a species of plant in the Rubiaceae family. It is native to Northeastern Mexico and the Southeastern United States. More specifically, it can be found in American states California, southern Nevada, southern Utah, Arizona, New Mexico, Texas, as well as the Mexican states Coahuila and Nuevo León.
Octotropideae is a tribe of flowering plants in the family Rubiaceae and contains about 103 species in 18 genera. Its representatives are found in the paleotropics. The genera previously placed in the tribe Hypobathreae are now placed in Octotropideae.
Dr. Charlotte M. Taylor is a botanist and professor specialising in taxonomy and conservation. She works with the large plant family Rubiaceae, particularly found in the American tropics and in the tribes Palicoureeae and Psychotrieae. This plant family is an economically important group, as it includes plant species used to make coffee and quinine. Taylor also conducts work related to the floristics of Rubiaceae and morphological radiations of the group. Taylor has collected plant samples from many countries across the globe, including Chile, Colombia, Costa Rica, Panama, and the United States of America, and has named many new species known to science from these regions. As of 2015, Taylor has authored 278 land plant species' names, the seventh-highest number of such names authored by any female scientist.
Dais is a genus of flowering plants in the family Thymelaeaceae. It is also part of the Gnidia subfamily, along with Gnidia, Drapetes, Kelleria, Pimelea, Struthiola, Lachnaea and Passerina, other genera of species). It is distributed between Tanzania to S. Africa, Madagascar. It is native to the countries of Eswatini, Lesotho, Madagascar, Malawi, Tanzania, Zimbabwe and it is also found within several Provinces of South Africa, such as Cape Provinces, Free State, KwaZulu-Natal and Northern Provinces.
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