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Crataegus Sect. Douglasia
Section ''Douglasia'' is a North American section within the genus ''Crataegus'' of species with black fruit. Series Series in section ''Douglasia'' include: * '' Cerrones'' * '' Douglasianae'' * '' Purpureofructus'' See also * List of hawthorn species with black fruit Most species of '' Crataegus'' (hawthorn) have red fruit, some have yellow fruit, and a number of species can have black or purple fruit. Eurasian species * '' C. ambigua'' * ''C. caucasica'' * '' C. chlorosarca'', Asian * ''C. clarkei'', Asian * ... References Section Douglasia Flora of North America Plant sections {{Crataegus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Douglasii
''Crataegus douglasii'' is a North American species of hawthorn known by the common names black hawthorn and Douglas' thornapple. It is most abundant in the Pacific Northwest. Description ''Crataegus douglasii'' is a compact erect bushy shrub growing to tall with a trunk of up to thick. It is covered in fan-shaped green leaves about long with teeth along the distal margin. Thorns along the branches are 1–2.5 cm long. White flowers with greenish centers grow in bunches at the ends of each thin branch. The fruit is a blackish pome up to about 1 cm across, containing 3–5 rocklike seeds. Taxonomy The species is named after David Douglas, who collected seed from the plant during his botanical explorations. Formerly placed within the species, ''Crataegus douglasii'' var. ''duchesnensis'' is now considered to be a synonym of ''Crataegus saligna''. Distribution The thorny shrub is native to northern and western North America, where it grows in varied habitats from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Ser
''Crataegus'' (), commonly called hawthorn, quickthorn, thornapple, Voss, E. G. 1985. ''Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part II: Dicots (Saururaceae–Cornaceae)''. Cranbrook Institute of Science and University of Michigan Herbarium, Ann Arbor, Michigan. May-tree,Graves, Robert. ''The White Goddess: A Historical Grammar of Poetic Myth'', 1948, amended and enlarged 1966, New York: Farrar, Straus and Giroux. whitethorn, Mayflower, or hawberry, is a genus of several hundred species of shrubs and trees in the family Rosaceae, native to temperate regions of the Northern Hemisphere in Europe, Asia, North Africa, and North America. The name "hawthorn" was originally applied to the species native to northern Europe, especially the common hawthorn ''C. monogyna'', and the unmodified name is often so used in Britain and Ireland. The name is now also applied to the entire genus and to the related As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Claudius Loudon
John Claudius Loudon (8 April 1783 – 14 December 1843) was a Scottish botanist, garden designer and author. He was the first to use the term arboretum in writing to refer to a garden of plants, especially trees, collected for the purpose of scientific study. He was married to Jane, née Webb, a fellow horticulturalist, and author of science-fiction, fantasy, horror, and gothic stories. Early life Loudon was born in Cambuslang, Lanarkshire, Scotland to a respectable farmer. Therefore, as he was growing up, he developed a practical knowledge of plants and farming. As a young man, Loudon studied biology, botany and agriculture at the University of Edinburgh. When working on the layout of farms in South Scotland, he described himself as a landscape planner. This was a time when open field land was being converted from run rig with 'ferm touns' to the landscape of enclosure, which now dominates British agriculture. Loudon developed a limp as a young man, and later became c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Section (botany)
In botany, a section ( la, sectio) is a taxonomic rank below the genus, but above the species. The subgenus, if present, is higher than the section, and the rank of series, if present, is below the section. Sections may in turn be divided into subsections.Article 4 in Sections are typically used to help organise very large genera, which may have hundreds of species. A botanist wanting to distinguish groups of species may prefer to create a taxon at the rank of section or series to avoid making new combinations, i.e. many new binomial names for the species involved. Examples: * ''Lilium'' sectio ''Martagon'' Rchb. are the Turks' cap lilies * ''Plagiochila aerea'' Taylor is the type species of ''Plagiochila'' sect. ''Bursatae'' See also * Section (biology) References Section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus
''Crataegus'' (), commonly called hawthorn, quickthorn, thornapple, Voss, E. G. 1985. ''Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part II: Dicots (Saururaceae–Cornaceae)''. Cranbrook Institute of Science and University of Michigan Herbarium, Ann Arbor, Michigan. May-tree,Graves, Robert. ''The White Goddess: A Historical Grammar of Poetic Myth'', 1948, amended and enlarged 1966, New York: Farrar, Straus and Giroux. whitethorn, Mayflower, or hawberry, is a genus of several hundred species of shrubs and trees in the family Rosaceae, native to temperate regions of the Northern Hemisphere in Europe, Asia, North Africa, and North America. The name "hawthorn" was originally applied to the species native to northern Europe, especially the common hawthorn ''C. monogyna'', and the unmodified name is often so used in Britain and Ireland. The name is now also applied to the entire genus and to the related Asian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Hawthorn Species With Black Fruit
Most species of '' Crataegus'' (hawthorn) have red fruit, some have yellow fruit, and a number of species can have black or purple fruit. Eurasian species * '' C. ambigua'' * ''C. caucasica'' * '' C. chlorosarca'', Asian * ''C. clarkei'', Asian * ''C. dzairensis'' * '' C. ×dsungarica'' * ''C. heterophylloides'' * ''C. jozana'' * ''C. karadaghensis'' * ''C. longipes'' * '' C. maximowiczii'' has fruit that are red to purple-black * '' C. nigra'', European * ''C. pallasii'' * '' C. pentagyna'', European * ''C.'' ×''pseudazarolus'' has fruit that vary from orange to blackish * ''C. sakranensis'' * ''C.'' ×''rubrinervis'' * '' C. songarica'', Asian * ''C.'' ''×zangezura'' North American species * ''C. ambigens'', series ''Silvicolae'', eastern, fruit "greenish-yellow becoming dark purplish-red"Palmer, E.J. (1925). Synopsis of North American ''Crataegi''. ''Journal of the Arnold Arboretum''. 6(1-2): 5–128/ref> * ''C. angulata'', series ''Pruinosae'', eastern, fruit "light yello ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of North America
The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenland. It includes bryophytes and vascular plants. All taxa are described and included in dichotomous keys, distributions of all species and infraspecific taxa are mapped, and about 20% of species are illustrated with line drawings prepared specifically for FNA. It is expected to fill 30 volumes when completed and will be the first work to treat all of the known flora north of Mexico; in 2015 it was expected tha the series would conclude in 2017. Twenty-nine of the volumes have been published as of 2022. Soon after publication, the contents are made available online. FNA is a collaboration of about 1,000 authors, artists, reviewers, and editors from throughout the world. Reception The series has been praised for "the comprehensive treatme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
