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Polygonanthus Amazonicus
''Polygonanthus'' is a small genus of flowering plants in the family Anisophylleaceae, found in the Amazon. It has a '' Polygonum''type embryo sac In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the fe .... Species Currently accepted species include: *'' Polygonanthus amazonicus'' Ducke *'' Polygonanthus punctulatus'' Kuhlm. References {{Taxonbar, from=Q384626 Anisophylleaceae Trees of the Amazon Cucurbitales genera Taxa named by Adolpho Ducke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolpho Ducke
Adolpho Ducke (October 19, 1876 – January 5, 1959), (also referred to as Adolfo Ducke and occasionally misspelled "Duque"), was a notable entomologist, botanist and ethnographer specializing in Amazonia. According to family records, he was an ethnic German with roots in Trieste Austro-Hungary (now in Italy). German was his first language; that is, the German commonly spoken in Trieste in the 19th century. Most of his books were written in German. Recruited by Emílio Goeldi, Ducke began his work in Amazônia as an entomologist for the Museu Paraense Emílio Goeldi, but due to the influence of botanists Jacques Hüber and Paul Le Cointe, he switched to botany. He traveled throughout Amazônia to study the complicated tree system of the rainforest. He published 180 articles and monographs, primarily on the Leguminosae, and he described 900 species and 50 new genera. In 1918, while continuing his work for the Paraense Museum, he collaborated with the Rio de Janeiro Botanical Gard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anisophylleaceae
The Anisophylleaceae are a small family with four genera and about 70 species, in the order Cucurbitales, according to the Angiosperm Phylogeny Group, APG II. However, it is more isolated from the other suprafamilial clades in this order, while it shows some similarities in flower morphology with the genus ''Ceratopetalum'' (family Cunoniaceae, order Oxalidales). Several wood features of this family are more primitive than those of the other families in the order Cucurbitales. Previously, this family was categorized under its own order, Anisophylleales, by Takhtajan system, Takhtajan in 1997. It is a pantropical family of shrubs and medium-sized to fairly large trees, occurring in wet, tropical forests and swamps of America, Africa and Asia. The palmately veined Leaf, leaves have a rather leathery texture, entire margins, and are often asymmetrical at the base. They have minute stipules or simply lack them. They are alternate; spiral, or distichous, or four-ranked (such as in '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygonum
''Polygonum'' is a genus of about 130 species of flowering plant in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass (though the common names may refer more broadly to plants from Polygonaceae). In the Middle English glossary of herbs ''Alphita'' ( 1400–1425), it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, buckwheat (''Fagopyrum esculentum'') has sometimes been included in the genus as ''Polygonum fagopyrum''. Former genera such as ''Polygonella'' have been subsumed into ''Polygonum''; other genera have been split off. The genus primarily grows in northern temperate regions. The species are very diverse, ranging from prostrate herbaceous annual plants to erect herbaceous perennial plants. ''Polygonum'' species are occasionally eaten by humans, and are used as food plants by the larvae of some Lepidoptera species – see list. Most species are considered weeds i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryo Sac
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a ''megagametophyte''— is also called the ''embryo sac'' in angiosperms. The megagametophyte produces an egg cell for the purpose of fertilization. The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule. Location within the plant In flowering plants, the ovule is located inside the portion of the flower called the gynoecium. The ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a ''funiculus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygonanthus Amazonicus
''Polygonanthus'' is a small genus of flowering plants in the family Anisophylleaceae, found in the Amazon. It has a '' Polygonum''type embryo sac In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the fe .... Species Currently accepted species include: *'' Polygonanthus amazonicus'' Ducke *'' Polygonanthus punctulatus'' Kuhlm. References {{Taxonbar, from=Q384626 Anisophylleaceae Trees of the Amazon Cucurbitales genera Taxa named by Adolpho Ducke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygonanthus Punctulatus
''Polygonanthus'' is a small genus of flowering plants in the family Anisophylleaceae, found in the Amazon. It has a '' Polygonum''type embryo sac. Species Currently accepted species include: *''Polygonanthus amazonicus ''Polygonanthus'' is a small genus of flowering plants in the family Anisophylleaceae, found in the Amazon. It has a '' Polygonum''type embryo sac In seed plants, the ovule is the structure that gives rise to and contains the female reprodu ...'' Ducke *'' Polygonanthus punctulatus'' Kuhlm. References {{Taxonbar, from=Q384626 Anisophylleaceae Trees of the Amazon Cucurbitales genera Taxa named by Adolpho Ducke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trees Of The Amazon
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the taller palms, tree ferns, bananas, and bamboos are also trees. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. It is estimated that there are some three trillion mature trees in the world. A tree typically has many secondary branches supported clear of the ground by the trunk. This trunk typically co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cucurbitales Genera
The Cucurbitales are an order of flowering plants, included in the rosid group of dicotyledons. This order mostly belongs to tropical areas, with limited presence in subtropical and temperate regions. The order includes shrubs and trees, together with many herbs and climbers. One major characteristic of the Cucurbitales is the presence of unisexual flowers, mostly pentacyclic, with thick pointed petals (whenever present). The pollination is usually performed by insects, but wind pollination is also present (in Coriariaceae and Datiscaceae). The order consists of roughly 2600 species in eight families. The largest families are Begoniaceae (begonia family) with around 1500 species and Cucurbitaceae (gourd family) with around 900 species. These two families include the only economically important plants. Specifically, the Cucurbitaceae (gourd family) include some food species, such as squash, pumpkin (both from ''Cucurbita''), watermelon (''Citrullus vulgaris''), and cucumber and mel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
