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Pyrostria Media
''Pyrostria'' is a genus of dioecious flowering plants in the family Rubiaceae. Most of the species are endemic to Madagascar, others occur on islands in the western Indian Ocean (Mauritius, Comoros, Réunion, Rodrigues, Socotra), a few are found in continental Africa, and only six species occur in tropical Southeast Asia. The formerly recognized genus ''Leroya'', containing two species endemic to Madagascar, ''L. madagascariensis'' and ''L. richardiae'', was sunk into synonymy with ''Pyrostria''. Species * '' Pyrostria affinis'' ( Robyns) Bridson * ''Pyrostria alaotrensis'' Arènes ex Cavaco * ''Pyrostria alluaudii'' Arènes ex Cavaco * ''Pyrostria ambongensis'' (Homolle ex Arènes) Razafim. Lantz & B.Bremer * ''Pyrostria ampijoroensis'' (Arènes) Razafim., Lantz & B.Bremer * ''Pyrostria amporoforensis'' Cavaco * ''Pyrostria analamazaotrensis'' Arènes ex Cavaco * ''Pyrostria andilanensis'' Cavaco * ''Pyrostria andringitrensis'' (Cavaco) Kainulainen & Razafim. * ''Pyrostria ang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrostria Revoluta
''Pyrostria revoluta'', formerly ''Scyphochlamys revoluta'', is a species of flowering plant in the Family (biology), family Rubiaceae that lives on the island of Rodrigues. Distribution and conservation ''Pyrostria revoluta'' is found on Rodrigues, one of the Mascarene Islands in the Indian Ocean, and an Outer islands of Mauritius, Outer island of Mauritius. By 1980, it appeared to be restricted to Grande Montagne and Cascade Victoire, and by 1989, the species was considered to be "on the verge of extinction". Some seeds were sent to the Royal Botanic Gardens, Kew, where they were successfully germinated in 1982 and subsequently grown up. Cutting (plant), Cuttings have since been taken, effectively ensuring the species' survival in cultivation. Description ''Pyrostria revoluta'' is a shrub or small tree, at up to tall. The leaves are notably dimorphic – they grow in two distinctly different forms. Juvenile leaves are up to long, but only wide. Mature leaves are a similar l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With nearly billion people as of , it accounts for about of the world's human population. Demographics of Africa, Africa's population is the youngest among all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Based on 2024 projections, Africa's population will exceed 3.8 billion people by 2100. Africa is the least wealthy inhabited continent per capita and second-least wealthy by total wealth, ahead of Oceania. Scholars have attributed this to different factors including Geography of Africa, geography, Climate of Africa, climate, corruption, Scramble for Africa, colonialism, the Cold War, and neocolonialism. Despite this lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrostria Angustifolia
''Pyrostria'' is a genus of dioecious flowering plants in the family Rubiaceae. Most of the species are endemic to Madagascar, others occur on islands in the western Indian Ocean (Mauritius, Comoros, Réunion, Rodrigues, Socotra), a few are found in continental Africa, and only six species occur in tropical Southeast Asia. The formerly recognized genus ''Leroya'', containing two species endemic to Madagascar, ''L. madagascariensis'' and ''L. richardiae'', was sunk into synonymy with ''Pyrostria''. Species * '' Pyrostria affinis'' ( Robyns) Bridson * '' Pyrostria alaotrensis'' Arènes ex Cavaco * '' Pyrostria alluaudii'' Arènes ex Cavaco * '' Pyrostria ambongensis'' (Homolle ex Arènes) Razafim. Lantz & B.Bremer * '' Pyrostria ampijoroensis'' (Arènes) Razafim., Lantz & B.Bremer * '' Pyrostria amporoforensis'' Cavaco * '' Pyrostria analamazaotrensis'' Arènes ex Cavaco * '' Pyrostria andilanensis'' Cavaco * '' Pyrostria andringitrensis'' (Cavaco) Kainulainen & Razafim. * '' Pyro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frans Hubert Edouard Arthur Walter Robyns
Frans Hubert Edouard Arthur Walter Robyns (1901-1986), known as Walter Robyns, was a Belgian botanist. His son, André Robyns (1935–2003), was also a botanist. Biography He received his doctorate in sciences at the University of Louvain.BHL Taxonomic literature : a selective guide to botanical publications Robyns spent two long stays at the , travelled in central Africa and performed taxonomic work on many groups of tropical African plants, amongst others: , |
