A phytochorion, in phytogeography, is a geographic area with a relatively uniform composition of plant species. Adjacent phytochoria do not usually have a sharp boundary, but rather a soft one, a transitional area in which many species from both regions overlap. The region of overlap is called a vegetation tension zone.
Heracleum maximum, commonly known as cow parsnip, is the only member of the genus Heracleum native to North America. It is also known as American cow-parsnip, Indian celery, Indian rhubarb or pushki. It is sometimes referred to as Heracleum lanatum, which is regarded as a synonym. The genus name Heracleum refers to the very large size of all parts of these plants.
Antidesma is a genus of tropical plant in the family Phyllanthaceae formally described by Linnaeus in 1753. It is native to tropical Africa, S + E + SE Asia, Australia, and various oceanic islands. The greatest diversity occurs in Southeast Asia.
Olea is a genus of about 40 species in the family Oleaceae, native to warm temperate and tropical regions of the Middle East, southern Europe, Africa, southern Asia, and Australasia. They are evergreen trees and shrubs, with small, opposite, entire leaves. The fruit is a drupe. Leaves of Olea contain trichosclereids.
Cynanchum is a genus of about 300 species including some swallowworts, belonging to the family Apocynaceae. The taxon name comes from Greek kynos and anchein, hence the common name for several species is dog-strangling vine. Most species are non-succulent climbers or twiners. There is some evidence of toxicity.
Myoporum is a genus of flowering plants in the figwort family, Scrophulariaceae. There are 30 species in the genus, eighteen of which are endemic to Australia although others are endemic to Pacific Islands, including New Zealand, and one is endemic to two Indian Ocean islands. They are shrubs or small trees with leaves that are arranged alternately and have white, occasionally pink flowers and a fruit that is a drupe.
Heinrich Gustav Adolf Engler was a German botanist. He is notable for his work on plant taxonomy and phytogeography, such as Die natürlichen Pflanzenfamilien, edited with Karl A. E. von Prantl.
Monochaetum is a neotropical genus of shrubs and subshrubs with about 54 species. It occurs in warm temperate to tropical montane habitats from Mexico and Central America to the South American Andes of Colombia, Venezuela, Ecuador and Peru with one species reaching the Guayana Highlands of Venezuela and Guyana.
Sideroxylon is a genus of trees in the family Sapotaceae described as a genus by Linnaeus in 1753. They are collectively known as bully trees. The generic name is derived from the Greek words σιδηρος (sideros), meaning "iron", and ξύλον (xylon), meaning "wood."
Renealmia is a plant genus in the family Zingiberaceae. Its members are native to tropical Africa and tropical America. In Peru, fruits and tubers are sources of indigenous dyes. and indigenous medical treatments for leishmania and malaria In Colombia, it is used to treat snakebite. Bracts and leaves can serve as phytotelmata, retaining small quantities of water that offer habitat for other organisms.
Limnophyton is a genus in the family Alismataceae. It includes five species from the Old World tropics. Three species are recognized as of May 2014:
Epidendrum paniculatum is a species of orchid in the genus Epidendrum.
Apocynum × floribundum, the intermediate dogbane, is a member of the family Apocynaceae. It is widespread across Canada, the United States, and northern Mexico.
Pilosella floribunda is a species of noxious and herbaceous perennial plant from family Asteraceae that is known in Europe and can also be found in United States and Canada. It was believed that it was a hybrid of Pilosella caespitosa (Hieracium caespitosum and Pilosella lactucella.
Halopegia is a genus of plants native to tropical Africa, Madagascar, and tropical southeast Asia. Three species are recognized as of April 2014:
Apetahia was a genus of plants native to various islands of French Polynesia in the South Pacific now considered to be a synonym of Sclerotheca.
- Apetahia longistigmata(F.Br.) E.Wimm - Marquesas
- Apetahia margaretae(F.Br.) E.Wimm. in H.G.A.Engler - Rapa Iti
- Apetahia raiateensisBaill. - Raiatea
- Apetahia seigeliiFlorence - Marquesas
Cyphia is a genus of flowering plants in the bellflower family, native to Africa.
