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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] |
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 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Hawthorn
''Crataegus monogyna'', known as common hawthorn, one-seed hawthorn, or single-seeded hawthorn, is a species of flowering plant in the rose family Rosaceae. It is native to Europe, northwestern Africa, and West Asia, but has been introduced in many other parts of the world. Names This species is one of several that have been referred to as '' Crataegus oxyacantha'', a name that has been rejected by the botanical community as too ambiguous. In 1793, Medikus published the name ''C. apiifolia'' for a European hawthorn now included in ''C. monogyna,'' but that name is illegitimate under the rules of botanical nomenclature. Other common names include may, mayblossom, maythorn, (as the plant generally flowers in May in the English-speaking parts of Europe) quickthorn, whitethorn, motherdie, and haw. Description The common hawthorn is a shrub or small tree up to about tall, with a dense crown. The bark is dull brown with vertical orange cracks. The younger stems bear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Rhipidophylla
''Crataegus rhipidophylla'' is a species of hawthorn which occurs naturally from southern Scandinavia and the Baltic region to France, the Balkan Peninsula, Turkey, Caucasia, and Ukraine. It is poorly known as a landscape and garden plant, but seems to have potential for those uses. Compared to ''Crataegus monogyna'', ''C. rhipidophylla'' has larger flowers, larger and more colourful fruits, and more decorative foliage. It has a more or less dome-shaped crown, and it is more tolerant of shade than ''C. monogyna''. Description ''Crataegus rhipidophylla'' is a shrub or tree which can grow to tall. Its stout thorns can be up to 1.5 cm long. Leaf blades are dark green, with 2-4 pairs of acute or subacuminate lobes. A helpful characteristic trait for identification is the finely serrated lobe margin. This can help distinguish ''C. rhipidophylla'' from ''C. monogyna'' which has irregularly serrated lobe margins, with more or less coarse teeth. The basal lobes of flowering shoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Coccinea
''Crataegus coccinea'', the scarlet hawthorn, is a species of hawthorn around which there is considerable confusion because the name has been misapplied for a long time. It has been shown to be the same as ''C. pedicellata'', and under the rules of botanical nomenclature, the older name (''C. coccinea'') should be used. Taxonomic history In 1901, Charles Sprague Sargent chose a lectotype for ''Crataegus coccinea'' from among Linnaeus's specimens, but chose a specimen that resembles ''C. dodgei'' Ashe. Sargent's lectotype opinion was followed by other authors until he realized his error and corrected it in 1909. The name ''C. coccinea'' has also been misapplied to specimens of '' C. intricata'' Lange. For almost 100 years, particularly since 1910, this species was generally called ''Crataegus pedicellata'' Sarg. except by a few authors. Linnaeus's original description was inadequate to make a decision between various unrelated species, including ''C. nigra'', ''C. phaenopyrum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Punctata
''Crataegus punctata'' is a species of hawthorn known by the common names dotted hawthorn or white haw that is native to most of the eastern United States and eastern Canada. While some sources claim it is the state flower of Missouri, the actual legislation does not identify an exact species. Furthermore, the Missouri Department of Conservation asserts the '' Crataegus mollis'' was specifically designated as the state flower. Description Although many North American hawthorns are polyploid and reproduce by apomixis, this species is apparently diploid and sexual, at least throughout Ontario, Canada. The name white haw refers to its distinctive pale (grey) bark, which is particularly noticeable in the winter landscape. The plant is a bush or small tree to about 7 meters in height and very thorny, particularly on the trunk. The flower has three to five styles and approximately 20 stamens, and the fruit is a pome-type polypyrenous drupe In botany, a drupe (or stone fruit) is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus Ambigua ''Crataegus ambigua'' is a species of thorn ( hawthorn) native to Western Asia and Eastern Europe, including Armenia, Iran, Russia, and Turkey. It grows as a shrub or tree up to about 12 m in height. The fruit is dark red to purple or black, with one or two stones (pyrenes Pyrene is a polycyclic aromatic hydrocarbon (PAH) consisting of four fused benzene rings, resulting in a flat aromatic system. The chemical formula is . This yellow solid is the smallest peri-fused PAH (one where the rings are fused through mor ...).Christensen, K.I. (1992). Revision of ''Crataegus'' sect. ''Crataegus'' and nothosect. ''Crataeguineae'' (Rosaceae-Maloideae) in the Old World. ''Systematic Botany Monographs''. 35: 1–199. ''Crataegus ambigua'' is closely related to '' Crataegus songarica'', a species that has black fruit. References ambigua Flora of Western Asia Flora of Eastern Europe {{crataegus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] |
