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Dialypetalum Compactum
''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious. It contains the following species, accepted as of July 2014: #'' Dialypetalum compactum'' Zahlbr. #''Dialypetalum floribundum'' Benth. in G.Bentham & J.D.Hooker #'' Dialypetalum humbertianum'' E.Wimm. in H.G.A.Engler #'' Dialypetalum × hybridum'' E.Wimm. in H.G.A.Engler ''(D. compactum × D. floribundum)'' #''Dialypetalum montanum ''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious Dioecy ( ; ; adj. dioecious, ) is a characteristic of ...'' E.Wimm. in H.G.A.Engler #'' Dialypetalum stenopetalum'' E.Wimm. in H.G.A.Engler References External links *Madagascar catalogue, Living Plant image, ''Dialypetalum floribundum'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, fourth largest island, the List of island countries, second-largest island country, and the List of countries and dependencies by area, 46th largest country overall. Its capital and List of cities in Madagascar, largest city is Antananarivo. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from Africa during the Early Jurassic period, around 180 million years ago, and separated from the Indian subcontinent approximately 90 million years ago. This isolation allowed native plants and animals to evolve in relative seclusion; as a result, Madagascar is a biodiversity hotspot and one of the world's 17 megadiverse countries, with over 90% of its wildlife of Madagascar, wildlife being endemic. The island has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lobelioideae
Lobelioideae is a subfamily of the plant family Campanulaceae. It contains 32 genera, totalling about 1200 species. Some of the larger genera are ''Lobelia'', '' Siphocampylus'', ''Centropogon'', '' Burmeistera'' and '' Cyanea''. They are perennials, sometimes annuals, ranging in form from herbs to small trees. Most species are tropical in distribution, but in total this subfamily occurs almost worldwide, being absent only from Arctic regions, central Asia and the Near East. The subfamily is particularly diverse in Hawaii, where well over 100 species of Hawaiian lobelioids have radiated from a single introduction. This subfamily was formerly given family rank as Lobeliaceae, under a somewhat different circumscription. The leaves are simple and alternate. The plants have milky sap. The flowers are bilaterally symmetric with five lobes and stamen The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinomorphic
Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirally arranged. Actinomorphic Most flowers are actinomorphic ("star shaped", "radial"), meaning they can be divided into three or more identical sectors which are related to each other by rotation about the center of the flower. Typically, each sector might contain one tepal or one petal and one sepal and so on. It may or may not be possible to divide the flower into symmetrical halves by the same number of longitudinal planes passing through the axis: oleander is an example of a flower without such mirror planes. Actinomorphic flowers are also called radially symmetrical or regular flowers. Other examples of actinomorphic flowers are the lily (''Lilium'', Liliaceae) and the buttercup ('' Ranunculus'', Ranunculaceae). Zygomorphic Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petals
Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corolla''. Petals are usually surrounded by an outer whorl of modified leaves called sepals, that collectively form the ''calyx'' and lie just beneath the corolla. The calyx and the corolla together make up the perianth, the non-reproductive portion of a flower. When the petals and sepals of a flower are difficult to distinguish, they are collectively called tepals. Examples of plants in which the term ''tepal'' is appropriate include genera such as ''Aloe'' and ''Tulipa''. Conversely, genera such as '' Rosa'' and ''Phaseolus'' have well-distinguished sepals and petals. When the undifferentiated tepals resemble petals, they are referred to as "petaloid", as in petaloid monocots, orders of monocots with brightly coloured tepals. Since they inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioecious
Dioecy ( ; ; adj. dioecious, ) is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is biparental reproduction. Dioecy has costs, since only the female part of the population directly produces offspring. It is one method for excluding self-fertilization and promoting allogamy (outcrossing), and thus tends to reduce the expression of recessive deleterious mutations present in a population. Plants have several other methods of preventing self-fertilization including, for example, dichogamy, herkogamy, and self-incompatibility. In zoology In zoology, dioecy means that an animal is either male or female, in which case the synonym gonochory is more often used. Most animal species are gonochoric, almost all vertebrate species are gonochoric, and all bird and mammal species are gonochoric. Dioecy may also describe colonies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialypetalum Compactum
''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious. It contains the following species, accepted as of July 2014: #'' Dialypetalum compactum'' Zahlbr. #''Dialypetalum floribundum'' Benth. in G.Bentham & J.D.Hooker #'' Dialypetalum humbertianum'' E.Wimm. in H.G.A.Engler #'' Dialypetalum × hybridum'' E.Wimm. in H.G.A.Engler ''(D. compactum × D. floribundum)'' #''Dialypetalum montanum ''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious Dioecy ( ; ; adj. dioecious, ) is a characteristic of ...'' E.Wimm. in H.G.A.Engler #'' Dialypetalum stenopetalum'' E.Wimm. in H.G.A.Engler References External links *Madagascar catalogue, Living Plant image, ''Dialypetalum floribundum'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialypetalum Montanum
''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious Dioecy ( ; ; adj. dioecious, ) is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is .... It contains the following species, accepted as of July 2014: #'' Dialypetalum compactum'' Zahlbr. #'' Dialypetalum floribundum'' Benth. in G.Bentham & J.D.Hooker #'' Dialypetalum humbertianum'' E.Wimm. in H.G.A.Engler #'' Dialypetalum × hybridum'' E.Wimm. in H.G.A.Engler ''(D. compactum × D. floribundum)'' #'' Dialypetalum montanum'' E.Wimm. in H.G.A.Engler #'' Dialypetalum stenopetalum'' E.Wimm. in H.G.A.Engler References External links *Madagascar catalogue, Living Plant image, ''Dialypetalum floribundum'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialypetalum Stenopetalum
''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious. It contains the following species, accepted as of July 2014: #''Dialypetalum compactum'' Zahlbr. #''Dialypetalum floribundum'' Benth. in G.Bentham & J.D.Hooker #''Dialypetalum humbertianum'' E.Wimm. in H.G.A.Engler #''Dialypetalum × hybridum'' E.Wimm. in H.G.A.Engler ''(D. compactum × D. floribundum)'' #''Dialypetalum montanum ''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious Dioecy ( ; ; adj. dioecious, ) is a characteristic of ...'' E.Wimm. in H.G.A.Engler #'' Dialypetalum stenopetalum'' E.Wimm. in H.G.A.Engler References External links *Madagascar catalogue, Living Plant image, ''Dialypetalum floribundum'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
