| Petroravenia | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Petroravenia Al-Shehbaz |
| Type species | |
| Petroravenia eseptataAl-Shehbaz | |
Petroravenia is a genus of plants in the Brassicaceae, first described in 1994. [1] There are to date only two species proposed as members of the genus: [2]
Brassicaceae or Cruciferae is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, some shrubs, with simple, although sometimes deeply incised, alternatingly set leaves without stipules or in leaf rosettes, with terminal inflorescences without bracts, containing flowers with four free sepals, four free alternating petals, two short and four longer free stamens, and a fruit with seeds in rows, divided by a thin wall.
- Petroravenia eseptata Al-Shehbaz [1] from Argentina
- Petroravenia friesii (O.E. Schulz) Al-Shehbaz [3] from Chile
Petroravenia eseptata is a plant species native to Argentina. It is also type species for its genus, Petroravenia, first described in 1994.
Argentina, officially the Argentine Republic, is a country located mostly in the southern half of South America. Sharing the bulk of the Southern Cone with Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of 2,780,400 km2 (1,073,500 sq mi), Argentina is the eighth-largest country in the world, the fourth largest in the Americas, and the largest Spanish-speaking nation. The sovereign state is subdivided into twenty-three provinces and one autonomous city, Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over part of Antarctica, the Falkland Islands, and South Georgia and the South Sandwich Islands.
Petroravenia friesii is a species in the family Brassicaceae native to Chile. It was formerly called Eudema friesii before being transferred to Petroravenia in 2012 because of the lack of septum diving the fruit into chambers.
The genus Petroravenia was named in honor of Peter H. Raven, President Emeritus of the Missouri Botanical Garden in St. Louis. The plants are superficially similar to those of the genus Draba , but differ from them in several technical fruit and seed characters. Most important of these is Petroravenia's lack of septum diving the fruit into two compartments, which is the usual case in the family. [1] [4]
Peter Hamilton Raven is an American botanist and environmentalist, notable as the longtime director, now President Emeritus, of the Missouri Botanical Garden.
The Missouri Botanical Garden is a botanical garden located at 4344 Shaw Boulevard in St. Louis, Missouri. It is also known informally as Shaw's Garden for founder and philanthropist Henry Shaw. Its herbarium, with more than 6.6 million specimens, is the second largest in North America, behind only that of the New York Botanical Garden.
Draba is a large genus of flowering plants in the cabbage family Brassicaceae (Cruciferae), commonly known as whitlow-grasses.
