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Hammada (plant)
''Hammada'' is a genus of flowering plants belonging to the family Amaranthaceae, in which it is placed in the subfamily Salsoloideae. It is a very unclear and unsorted genus, with many species that have been classed as synonyms by other authors. The native range of the genus is in central and southwestern Asia, with species found in Iraq, Lebanon, Palestine, Syria, Turkey and Uzbekistan. They are often found growing in alkaline or saline habitats. Description They are perennial plants, with a glabrous (smooth) wood (only at the base). They can grow up to tall. Michael Zohary The weed-like plants have regular, minute, or small, cyclic flowers. The flowers have no petals, but 5 sepals which are united at the base. It has 5 stamens and the ovary is positioned superior and consists of 2 united carpels. Which late matures into a fruit (or seed capsule). Known species According to Plants of the World Online; * '' Hammada eriantha'' Botsch. (from Uzbekistan) * '' Hammada ramosissima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modest Mikhaĭlovich Iljin
Modest Mikhailovich Ilyin or Iljin (Модест Михайлович Ильин; 17 October 1889, Góra Kalwaria - 9 May 1967, Leningrad) was a Russian botanist. He was keeper of the Herbarium of the Leningrad State University (now the Herbarium of the Komarov Botanical Institute) for many decades. Ilyin was raised in Krasnoyarsk. Influenced by Arkady Tugarinov (the director of the Krasnoyarsk Museum) he developed an interest in natural sciences, particularly botany. In 1909, he enrolled in the Faculty of Medicine at Tomsk University. There, he attended botanical lectures by Vasily Sapozhnikov (the university's dean). In 1912, Ilyin moved to Saint Petersburg, deciding to continue his studies at Saint Petersburg University. He also worked as an assistant to Boris Fedtchenko and Vladimir L. Komarov at the university herbarium. In 1916, he graduated from Saint Petersburg University and became a curator at the herbarium. Ilyin taught botany at Leningrad University for decades and d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamada
A hamada (, ) is a type of desert landscape consisting of high, largely barren, hard rocky (basalt) plateaus, where most of the sand has been removed by Aeolian processes#Wind erosion, deflation. The majority of the Sahara is hamada. Other examples are Negev desert in Israel and the in Algeria. Formation Hamadas are produced by the wind, which removes the fine products of weathering, an Aeolian processes, aeolian process known as deflation. The finer-grained products are taken away in suspension. At the same time, the sand is removed through saltation (geology), saltation and Aeolian landform#Mechanism, surface creep, leaving behind a landscape of gravel, boulders and bare rock. Related landforms Hamada is related to desert pavement (known variously as reg, serir, gibber, or saï), which occurs as stony plains or depressions covered with gravels or boulders rather than as highland plateaus. Hamadas exist in contrast to ''Erg (landform), ergs'', which are large areas of shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1948
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amaranthaceae Genera
Amaranthaceae ( ) is a family of flowering plants commonly known as the amaranth family, in reference to its type genus '' Amaranthus''. It includes the former goosefoot family Chenopodiaceae and contains about 165 genera and 2,040 species, making it the most species-rich lineage within its parent order, Caryophyllales. Description Most species in the Amaranthaceae are annual or perennial herbs or subshrubs; others are shrubs; very few species are vines or trees. Some species are succulent. Many species have stems with thickened nodes. The wood of the perennial stem has a typical "anomalous" secondary growth; only in subfamily Polycnemoideae is secondary growth normal. The leaves are simple and mostly alternate, sometimes opposite. They never possess stipules. They are flat or terete, and their shape is extremely variable, with entire or toothed margins. In some species, the leaves are reduced to minute scales. In most cases, neither basal nor terminal aggregations of leaves o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloxylon Scoparium
''Haloxylon scoparium'' (syns. ''Arthrophytum scoparium'' and ''Hammada scoparia'') is a species of flowering plant in the family Amaranthaceae Amaranthaceae ( ) is a family of flowering plants commonly known as the amaranth family, in reference to its type genus '' Amaranthus''. It includes the former goosefoot family Chenopodiaceae and contains about 165 genera and 2,040 species, maki ..., native to semiarid north Africa and the Middle East. In flat areas it is often one of the dominant species. References Amaranthaceae Flora of Mauritania Flora of North Africa Flora of Sinai Flora of Lebanon Flora of Palestine (region) Flora of Iraq Plants described in 1875 {{Amaranthaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloxylon
''Haloxylon'' is a genus of shrubs or small trees, belonging to the plant family Amaranthaceae. ''Haloxylon'' and its species are known by the common name saxaul. "Saksaul" is a common Turkic word that entered Russian through Kazakh. Description The species of genus ''Haloxylon'' are shrubs or small trees (rarely up to ) tall, with a thick trunk and many branches. The branches of the current year are green, from erect to pendant. The leaves are reduced to small scales. The inflorescences are short shoots borne on the stems of the previous year. The flowers are very small, as long or shorter than the bracteoles, bisexual or male. The two stigmas are very short. In fruit, the perianth segments develop spreading wings. The fruit with wings is about in diameter. The seed is about in diameter. Distribution and habitat The genus ''Haloxylon'' is distributed in southwest and Central Asia, from Egypt to Mongolia and China (Xinjiang and Gansu), where it grows in sandy habitats (psam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural Research Service
The Agricultural Research Service (ARS) is the principal in-house research agency of the United States Department of Agriculture (USDA). ARS is one of four agencies in USDA's Research, Education and Economics mission area. ARS is charged with extending the nation's scientific knowledge and solving agricultural problems through its four national program areas: nutrition, food safety and quality; animal production and protection; natural resources and sustainable agricultural systems; and crop production and protection. ARS research focuses on solving problems affecting Americans every day. The ARS Headquarters is located in the Jamie L. Whitten Building on Independence Avenue in Washington, D.C., and the headquarters staff is located at the George Washington Carver Center (GWCC) in Beltsville, Maryland. For 2018, its budget was $1.2 billion. For 2023, the budget grew to $1.9 billion. Mission ARS conducts scientific research for the American public. Their main focus is on research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Agriculture
The United States Department of Agriculture (USDA) is an executive department of the United States federal government that aims to meet the needs of commercial farming and livestock food production, promotes agricultural trade and production, works to assure food safety, protects natural resources, fosters rural communities and works to end hunger in the United States and internationally. It is headed by the secretary of agriculture, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Brooke Rollins, who has served since February 13, 2025. Approximately 71% of the USDA's $213 billion budget goes towards nutrition assistance programs administered by the Food and Nutrition Service (FNS). The largest component of the FNS budget is the Supplemental Nutrition Assistance Program (formerly known as the 'Food Stamp' program), which is the cornerstone of USDA's nutrition assistance. The United Stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammada Ramosissima
''Hammada ramosissima'' is a species of flowering plant in the family Amaranthaceae Amaranthaceae ( ) is a family of flowering plants commonly known as the amaranth family, in reference to its type genus '' Amaranthus''. It includes the former goosefoot family Chenopodiaceae and contains about 165 genera and 2,040 species, maki .... It is native to Iraq, Lebanon, Syria, Israel, Palestine, and eastern Turkey. Synonyms * ''Anabasis ramosissima'' Dingler ex Oppenh. in Bull. Soc. Bot. Genève, sér. 2, 22: 291 (1930 publ. 1931), nom. illeg. * ''Haloxylon articulatum'' subsp. ''ramosissimum'' Boiss. ex Eig in Palestine J. Bot., Jerusalem Ser. 3: 128 (1945) * ''Hammada syriaca'' Botsch. in Novosti Sist. Vyssh. Rast. 1: 364 (1964), nom. superfl. * ''Haloxylon eigii'' (Iljin) Danin & D.Heller in Fl. Medit. 10: 152 (2000) * ''Hammada eigii'' Iljin in Novosti Sist. Vyssh. Rast. 1: 72 (1964) References Amaranthaceae {{Amaranthaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit. The group was formerly called Magnoliophyta. Angiosperms are by far the most diverse group of Embryophyte, land plants with 64 Order (biology), orders, 416 Family (biology), families, approximately 13,000 known Genus, genera and 300,000 known species. They include all forbs (flowering plants without a woody Plant stem, stem), grasses and grass-like plants, a vast majority of broad-leaved trees, shrubs and vines, and most aquatic plants. Angiosperms are distinguished from the other major seed plant clade, the gymnosperms, by having flowers, xylem consisting of vessel elements instead of tracheids, endosperm within their seeds, and fruits that completely envelop the seeds. The ancestors of flowering plants diverged from the commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammada Eriantha
A hamada is a type of desert landscape. Hamada or hammada (or Japanese ) may also refer to: Places *Hamada, Shimane, a city in Shimane Prefecture, Japan * Rikuzen-Hamada Station, a rail station in Shiogama, Miyagi, Japan Other uses * Hamada (name), list of people with the surname and given name * ''Hammada'' (plant), a genus in the family Amaranthaceae *'' Taraka hamada'', a species of Indian butterfly *''Hamada'', a 2009 album by Nils Petter Molvær Nils Petter Molvær (), also known as NPM (born 18 September 1960), is a Norwegian jazz trumpeter, composer, and record producer. He is considered a pioneer of future jazz, a genre that fuses jazz and electronic music, best showcased on his most ... See also * Hamadeh (other) {{disambiguation, geo, taxonomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew. History Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online in March 2017 with the goal of creating an exhaustive online database of all seed-bearing plants worldwide. (Govaerts wrongly speaks of "Convention for Botanical Diversity (CBD)). The initial focus was on tropical African flora, particularly flora ''Zambesiaca'', flora of West and East Tropical Africa. Since March 2024, the website has displayed AI-generated predictions of the extinction risk for each plant. Description The database uses the same taxonomical source as the International Plant Names Index, which is the World Checklist of Vascular Plants (WCVP). The database contains information on the world's flora gathered from 250 years of botanical research. It aims to make available data from projects that no longer have an online ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
