| Hillia | |
|---|---|
 | |
| Hillia parasitica | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Subfamily: | Cinchonoideae |
| Genus: | Hillia Jacquin |
| Type species | |
| Hillia parasitica Jacquin | |
| Species | |
24 species, see text. | |
| Synonyms | |
Ravnia Oersted | |
Hillia is a genus of flowering plants in the family Rubiaceae. It has 24 species, [1] all of which are native to the Neotropics. [2]
Hillia was named by Nicolaus Jacquin in 1760. [3] [4] It was named for the English botanist John Hill (1716-1775). [5] Jacquin named only one species, Hillia parasitica. It has been suggested that the specific epithet as well as the generic name might well be a reference to John Hill. [6]
Some authors have placed five of the species in a separate genus, Ravnia. A cladistic analysis of morphological characters found Ravnia to be embedded within Hillia. [6] This hypothesis has not been tested with molecular data.
The genera Hillia, Balmea , and Cosmibuena form a monophyletic group. Some authors have designated this group as the tribe Hillieae, but it might be embedded within another tribe, Hamelieae. [7]
The following species list may be incomplete or contain synonyms.
Most of the species are slightly succulent epiphytes or small trees. A few are subshrubs or lianas. Hillia rivalis is a rheophyte. The tissues of all the species contain raphides. The capsules have a beak-like appendage. [6]
Hillia triflora is cultivated as an ornamental plant. [8]
Uncaria is a genus of flowering plants in the family Rubiaceae. It has about 40 species. Their distribution is pantropical, with most species native to tropical Asia, three from Africa and the Mediterranean and two from the neotropics. They are known colloquially as gambier, cat's claw or uña de gato. The latter two names are shared with several other plants. The type species for the genus is Uncaria guianensis.
GastoniaCommerson ex Lamarck is a formerly accepted genus of plants in the ivy and ginseng family, Araliaceae. It had been known as an unnatural group, but was recognized as late as 2010, when its nine species were distributed to four different subgenera of the large genus Polyscias. Because the genus Gastonia is now obsolete, its species are herein referred to by their names in Polyscias.
Nikolaus Joseph Freiherr von Jacquin was a scientist who studied medicine, chemistry and botany.
Mertensia is a genus of flowering plants in the family Boraginaceae. They are perennial herbaceous plants with blue or sometimes white flowers that open from pink-tinged buds. Such a change in flower color is common in Boraginaceae and is caused by an increase of pH in the flower tissue. Mertensia is one of several plants that are commonly called "bluebell". In spite of their common name, the flowers are usually salverform (trumpet-shaped) rather than campanulate (bell-shaped).
Nauclea is a genus of flowering plants in the family Rubiaceae. The species are evergreen trees or shrubs that are native to the paleotropics. The terminal vegetative buds are usually strongly flattened. The generic name is derived from the Ancient Greek words naus, meaning "ship" and kleio, meaning "to close". It refers to the resemblance of the cells of the capsule to a ship's hull.
Vitex is a genus of flowering plants in the sage family Lamiaceae. It has about 250 species. Common names include chaste tree or chastetree, traditionally referring to V. agnus-castus, but often applied to other species, as well.
Cuphocarpus is an obsolete genus of flowering plants in the family Araliaceae. Mabberley (2008) treated it as a synonym of Polyscias, but other authors still recognized it at that time. In 2010, in a phylogenetic analysis of DNA sequences, it was shown that Cuphocarpus was biphyletic and embedded in the large genus Polyscias. In an accompanying paper, Polyscias was divided into 11 subgenera, with seven species left incertae sedis.
Oldenlandia is a genus of flowering plants in the family Rubiaceae. It is pantropical in distribution and has about 240 species. The type species for the genus is Oldenlandia corymbosa.
Blepharidium is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Blepharidium guatemalense, which is native to Guatemala, Honduras and southern Mexico. Older works might mention two species.
Exostema is a genus of flowering plants in the family Rubiaceae. It consists of trees and shrubs, endemic to the neotropics, with most of the species occurring in the West Indies.
Guettarda is a plant genus in the family Rubiaceae. Most of these plants are known by the common name velvetseed.
Lasianthus is a genus of flowering plants in the family Rubiaceae. They are tropical subshrubs, shrubs, or rarely, small trees. They inhabit the understory of primary forests.
Machaonia is a genus of flowering plants in the family Rubiaceae. It has about 32 species. All are indigenous to the neotropics. None has a unique common name. Some species have been called "alfilerillo", a Spanish name for the common and well-known genus Erodium. The type species for Machaonia is Machaonia acuminata.
Rondeletia is a genus of flowering plants in the family Rubiaceae. It is endemic to the Neotropics. There are around 160 species.
Remijia is a genus of flowering plants in the family Rubiaceae. Within the family, it is a member of the subfamily Cinchonoideae and the tribe Cinchoneae.
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.
Chione is a monotypic genus of flowering plants in the family Rubiaceae containing the single species Chione venosa. It is native to the neotropics, occurring in most of Mexico, and throughout Central America, the Caribbean, Colombia, Ecuador, and Peru. It is typically a tree growing 10 to 20 meters tall. In harsh habitats, it may be dwarfed and shrubby. It has no known economic use.
Hymenodictyon is a genus of flowering plants in the family Rubiaceae. It has about 30 species. All are native to the Old World. The wood of Hymenodictyon orixense is soft and has limited use, mostly for boxes. The type species for Hymenodictyon is Hymenodictyon orixense.
Neonauclea is a genus of flowering plants in the family Rubiaceae. It comprises about 71 species. Neonauclea is a genus of shrubs and trees They are indigenous to China, India, Southeast Asia, Wallacea, New Guinea and Australia.
Strumpfia is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Strumpfia maritima, which is found from southern Florida to northern Venezuela. Strumpfia maritima is also the only species in the tribe Strumpfieae. It is an evergreen shrub of coastal areas that rarely exceeds 1 m (3.3 ft) in height. Pride of Big Pine is a common name. Strumpfia was named by Nicolaus Jacquin in 1760 in his compilation entitled Enumeratio Systematis Plantarum. It was named for Christopher Strumpf, professor of chemistry and botany at Hall, in Magdeburg, and editor of Carl Linnaeus's Genera Plantarum.