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Chasechloa
''Chasechloa'' is a grass genus in the tribe Paniceae (subtribe Boivinellinae), endemic to Madagascar. It was described by French botanist Aimée Antoinette Camus in 1948, who named it in honour of Mary Agnes Chase. Its two species were also classified in the genera '' Echinolaena'' and '' Panicum'', but phylogenetic analysis confirmed that they form a distinct lineage. Species of the genus are erect grasses, tall. They have ovate to linear leaves. The inflorescence is a terminal, one-sided raceme, sometimes in clusters of up to five. The glumes have prominent stiff hairs. The spikelets are paired and have no awns. The genus can be distinguished from similar forest grass species in ''Acroceras'', ''Brachiaria'', '' Urochloa'' and '' Poecilostachys'' by its denser and thicker racemes. The upper florets have oily appendages, elaiosomes, which suggest seed dispersal by ants (myrmecochory), although this has not directly been observed. ''Chasechloa'' species are found in savann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chasechloa Egregia
''Chasechloa'' is a grass genus in the tribe Paniceae (subtribe Boivinellinae), endemic to Madagascar. It was described by French botanist Aimée Antoinette Camus in 1948, who named it in honour of Mary Agnes Chase. Its two species were also classified in the genera '' Echinolaena'' and '' Panicum'', but phylogenetic analysis confirmed that they form a distinct lineage. Species of the genus are erect grasses, tall. They have ovate to linear leaves. The inflorescence is a terminal, one-sided raceme, sometimes in clusters of up to five. The glumes have prominent stiff hairs. The spikelets are paired and have no awns. The genus can be distinguished from similar forest grass species in ''Acroceras'', ''Brachiaria'', '' Urochloa'' and '' Poecilostachys'' by its denser and thicker racemes. The upper florets have oily appendages, elaiosomes, which suggest seed dispersal by ants (myrmecochory), although this has not directly been observed. ''Chasechloa'' species are found in savann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chasechloa Madagascariensis
''Chasechloa'' is a grass genus in the tribe Paniceae (subtribe Boivinellinae), endemic to Madagascar. It was described by French botanist Aimée Antoinette Camus in 1948, who named it in honour of Mary Agnes Chase. Its two species were also classified in the genera '' Echinolaena'' and '' Panicum'', but phylogenetic analysis confirmed that they form a distinct lineage. Species of the genus are erect grasses, tall. They have ovate to linear leaves. The inflorescence is a terminal, one-sided raceme, sometimes in clusters of up to five. The glumes have prominent stiff hairs. The spikelets are paired and have no awns. The genus can be distinguished from similar forest grass species in ''Acroceras'', ''Brachiaria'', '' Urochloa'' and '' Poecilostachys'' by its denser and thicker racemes. The upper florets have oily appendages, elaiosomes, which suggest seed dispersal by ants (myrmecochory), although this has not directly been observed. ''Chasechloa'' species are found in savann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinolaena
''Echinolaena'' is a genus of plants in tribe Paspaleae of the grass family, native to the New World tropics. in Latin It includes only two species after the referral of former members to the related genera '' Hildaea'', '''', '' Oedochloa'' and the more distant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paniceae
Paniceae is a large tribe of the subfamily Panicoideae in the grasses (Poaceae), the only in the monotypic supertribe Panicodae. It includes roughly 1,500 species in 84 genera, primarily found in tropical and subtropical regions of the world. Paniceae includes species using either of the C4 and C3 photosynthetic pathways, as well as presumably intermediate species. Most of the millets are members of tribe Paniceae. The tribe is subdivided into seven subtribes, but some genera are as yet unplaced (''incertae sedis''). Species in the Paniceae have an ancestral chromosome number ( monoploid number) of ''x'' = 9, while species with ''x'' = 10 formerly included are now recognised as separate tribe, Paspaleae. Subtribes and genera Subdivisions: Gallery Starr_010520-0041_Cenchrus_echinatus.jpg, '' Cenchrus echinatus'' Crabgrass.JPG, ''Digitaria sanguinalis'' Echinochloa crus-galli 2006.08.27 14.59.37-p8270051.jpg, ''Echinochloa crus-galli'' Eriochloa procera plant.jpg, '' Eriochl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acroceras
''Acroceras'' is a genus of tropical and subtropical plants in the grass family. The genus is widespread across warmer parts of Asia, Africa, and the Americas, with a high amount of diversity in Madagascar.Ahmed, Z.U. (ed.) (2008). Encyclopedia of Flora and Fauna of Bangladesh 12: 1-505. Asiatic Society of Bangladesh ; Species ; formerly included see '' Brachiaria Panicum'' * ''Acroceras paucispicatum - Brachiaria paucispicata'' * ''Acroceras pilgerianum - Panicum pilgerianum'' See also * List of Poaceae genera The true grasses (Poaceae) are one of the largest plant families, with around 12,000 species and roughly 800 genera. They contain, among others, the cereal crop species and other plants of economic importance, such as the bamboos, and several imp ... References External links * Panicoideae Poaceae genera {{Panicoideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Madagascar
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panicoideae
Panicoideae is the second-largest subfamily of the grasses with over 3,500 species, mainly distributed in warm temperate and tropical regions. It comprises some important agricultural crops, including sugarcane, maize (or corn), sorghum, and switchgrass. C4 photosynthesis evolved independently a number of times in the subfamily, which presumably had a C3 ancestor. Description The ligule has a fringe of hairs. The inflorescence is branched around a common axis. The spikelets are all alike with two bisexual florets that are joined below the glumes (the outer floral envelopes). The lower glume is shorter than the spikelet. Systematics and taxonomy Within the PACMAD clade of grasses, the Panicoideae are sister to a clade made of the four subfamilies Arundinoideae, Chloridoideae, Danthonioideae, and Micrairoideae. A modern phylogenetic classification divides the Panicoideae in twelve tribes corresponding to monophyletic clades; two genera, '' Chandrasekharania'' and ''Jansenella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nosy Be
Nosy Be (formerly Nossi-bé and Nosse Be) is an island off the northwest coast of Madagascar. Nosy Be is Madagascar's largest and busiest tourist resort. It has an area of , and its population was 109,465 according to the provisional results of the 2018 Census. ''Nosy Be'' means "big island" in the Malagasy language. The island was called Assada during the early colonial era of the 17th century. Nosy Be has been given several nicknames over the centuries, including "Nosy Manitra" (the scented island). History The first human inhabitants of Nosy Be were small bands of Antankarana and Zafinofotsy, before the Sakalava people migrated there and became the most numerous ethnic group on the island. These people were joined later by some Comorians, Indians or Antandroy. Nosy Be made first major appearance in Madagascar's history when King Radama I announced that he intended to conquer the whole west of Madagascar. That plan was eventually achieved in 1837 when the Sakalava Kingdom of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myrmecochory
Myrmecochory ( (sometimes myrmechory); from grc, μύρμηξ, mýrmēks ("ant") and ''khoreíā'' ("circular dance") is seed dispersal by ants, an ecologically significant ant–plant interaction with worldwide distribution. Most myrmecochorous plants produce seeds with elaiosomes, a term encompassing various external appendages or "food bodies" rich in lipids, amino acids, or other nutrients that are attractive to ants. The seed with its attached elaiosome is collectively known as a diaspore. Seed dispersal by ants is typically accomplished when foraging workers carry diaspores back to the ant colony, after which the elaiosome is removed or fed directly to ant larvae. Once the elaiosome is consumed, the seed is usually discarded in underground middens or ejected from the nest. Although diaspores are seldom distributed far from the parent plant, myrmecochores also benefit from this predominantly mutualistic interaction through dispersal to favourable locations for germina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elaiosome
Elaiosomes ( grc, ἔλαιον ''élaion'' "oil" + ''sóma'' "body") are fleshy structures that are attached to the seeds of many plant species. The elaiosome is rich in lipids and proteins, and may be variously shaped. Many plants have elaiosomes that attract ants, which take the seed to their nest and feed the elaiosome to their larvae. After the larvae have consumed the elaiosome, the ants take the seed to their waste disposal area, which is rich in nutrients from the ant frass and dead bodies, where the seeds germinate. This type of seed dispersal is termed myrmecochory from the Greek "ant" (myrmex) and "circular dance" (khoreíā). This type of symbiotic relationship appears to be mutualistic, more specifically dispersive mutualism according to Ricklefs, R.E. (2001), as the plant benefits because its seeds are dispersed to favorable germination sites, and also because it is planted (carried underground) by the ants. Elaiosomes develop in various ways either from seed ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poecilostachys
''Poecilostachys'' is a genus of African plants in the grass family, several of the species found only in Madagascar. ; Species ; formerly included see ''Oplismenus'' * ''Poecilostachys stapfii - Oplismenus flavicomus ''Oplismenus'' is a small genus of annual or perennial grasses, commonly known as basketgrass, found throughout the tropics, subtropics, and in some cases, temperate regions of the Americas, Africa, Asia, and Australia. The systematics of the ...'' References Poaceae genera Grasses of Africa Endemic flora of Madagascar Panicoideae Taxa named by Eduard Hackel {{Panicoideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urochloa
''Urochloa'' is a genus of plants in the grass family, native to Eurasia, Africa, Australia, Mexico, and the Pacific Islands.''Urochloa''. Grass Manual. Flora of North America.Watson, L. and M. J. Dallwitz The Grass Genera of the World. DELTA – DEscription Language for TAxonomy. Common names include signalgrass.''Urochloa''. USDA PLANTS. /ref> ; Spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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