|
Taraxacum Erythrospermum
''Taraxacum erythrospermum'', known by the common name red-seeded dandelion, is a species of dandelion introduced to much of North America, but most commonly in the north. It is often considered as a variety of '' Taraxacum laevigatum'' (i.e., ''Taraxacum laevigatum'' var. ''erythrospermum''). In many characteristics, it is similar to the common dandelion, ''Taraxacum officinale''. Description This species is very similar to, and often mistaken for, the common dandelion, ''Taraxacum officinale''. It most readily differs by its reddish-brown seed bases, unlike the more olive colored seeds of ''T. officinale''. The red-seeded dandelion can also be identified by its leaves, which have consistently triangular lobes throughout, whereas ''T. officinale'' tends to have erratic lobing with minimal or no triangular form. The leaves of ''T. erythrospermum'' thus bear a closer resemblance to the basal leaves of sow thistles (''Sonchus oleraceus ''Sonchus oleraceus'' is a species of flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antoni Andrzejowski
Antoni Lukianowicz Andrzejowski (also Anton and Andrzeiovski, Andrzeiowski, Andrzeiowsky, russian: Антон Лукьянович Андржейовский, Anton Lukjanowitsch Andrschejowski) was a Russian-Polish botanist, zoologist and paleontologist. He also used the pseudonym Stary Detiuk, meaning "old Detiuk". Early life and education Andrzejowski was born the son of a bank clerk and property manager in the village of in the present-day Rivne Oblast in Ukraine. He grew up in various places in western Ukraine and studied in Vilnius after his father's death in 1801. Andrzejowski was a student of the botanists Franz Scheidt and Wilibald Swibert Joseph Gottlieb von Besser in Kremenets. Career in botany Andrzejowski was a teacher at the lyceum in Kremenets. After his Polish-language lyceum was dissolved in 1832, he was an assistant to Wilibald Swibert Joseph Gottlieb von Besser and lecturer at Kiev University beginning in 1832. He had to give up that position when the Russi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilibald Swibert Joseph Gottlieb Von Besser
Wilibald Swibert Joseph Gottlieb von Besser (7 July 1784 – 11 October 1842), known in Russia as Vilibald Gotlibovich Besser (russian: Вилибальд Готлибович Бессер) was an Austrian-born botanist active in the Russian Empire, who worked most of his life within the territory of western Ukraine. Born in Innsbruck, he lost both of his parents when he was 13, after which he was raised by his godfather, , who was a professor of botany at the University of Lemberg. Besser received his initial education at Lemberg, then entered university there to study medicine while also practising botany under the guidance of Schivereck, starting a large collection of botanical specimens. Upon the closure of the University of Lemberg, von Besser accompanied Schivereck to his new teaching position in Krakow, where the latter passed away in 1806, leaving his godson with his herbarium. Von Besser graduated as a doctor from the University of Krakow in 1807, and continued to pursue hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taraxacum
''Taraxacum'' () is a large genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions. The scientific and hobby study of the genus is known as taraxacology. The genus is native to Eurasia and North America, but the two most commonplace species worldwide, '' T. officinale'' (the common dandelion) and '' T. erythrospermum'' (the red-seeded dandelion), were introduced from Europe into North America, where they now propagate as wildflowers. Both species are edible in their entirety. The common name ''dandelion'' ( , from French , meaning 'lion's tooth') is also given to specific members of the genus. Like other members of the family Asteraceae, they have very small flowers collected together into a composite flower head. Each single flower in a head is called a ''floret''. In part due to their abundance, along with being a generalist species, dandelions are one of the most vital early spring nectar sources for a wide host ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Introduced Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and neophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variety (botany)
In botanical nomenclature, variety (abbreviated var.; in la, varietas) is a taxonomic rank below that of species and subspecies, but above that of form. As such, it gets a three-part infraspecific name. It is sometimes recommended that the subspecies rank should be used to recognize geographic distinctiveness, whereas the variety rank is appropriate if the taxon is seen throughout the geographic range of the species. Example The pincushion cactus, ''Escobaria vivipara'' (Nutt.) Buxb., is a wide-ranging variable species occurring from Canada to Mexico, and found throughout New Mexico below about . Nine varieties have been described. Where the varieties of the pincushion cactus meet, they intergrade. The variety ''Escobaria vivipara'' var. ''arizonica'' is from Arizona, while ''Escobaria vivipara'' var. ''neo-mexicana'' is from New Mexico. See also '' Capsicum annuum var. glabriusculum'' Definitions The term is defined in different ways by different authors. However, the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taraxacum Laevigatum
''Taraxacum laevigatum'', the rock dandelion or red-seeded dandelion, is a species of dandelion that grows in Europe, including Great Britain. Rarely, ''Taraxacum laevigatum'' can be found in the northern parts of North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car .... References laevigatum Plants described in 1813 Taxa named by Augustin Pyramus de Candolle Invasive plant species in Japan {{Cichorieae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taraxacum Officinale
''Taraxacum officinale'', the dandelion or common dandelion, is a flowering herbaceous perennial plant of the dandelion genus in the family Asteraceae (syn. Compositae). The common dandelion is well known for its yellow flower heads that turn into round balls of many silver-tufted fruits that disperse in the wind. These balls are usually called "clocks" in both British and American English. The name "blowball" is also used. The common dandelion grows in temperate regions of the world in areas with moist soils. It is most often considered a weed, especially in lawns and along roadsides, but the leaves, flowers, and roots are sometimes used in herbal medicine and as food. Description ''Taraxacum officinale'' grows from (generally unbranched) taproots and produces several hollow, leafless flower stems that are typically tall, but sometimes up to tall. The stems can be tinted purplish, they are upright or lax, and produce flower heads that are held as tall or taller than the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lobed Leaf
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "acuminate", "lanceolate", or "linear" could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basal Leaves
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonchus Oleraceus
''Sonchus oleraceus'' is a species of flowering plant in the tribe Cichorieae of the family Asteraceae, native to Europe and Western Asia. It has many common names including common sowthistle, sow thistle, smooth sow thistle, annual sow thistle, hare's colwort, hare's thistle, milky tassel, milk thistle. and soft thistle. Its specific epithet means "vegetable/herbal". The common name 'sow thistle' refers to its attractiveness to pigs, and the similarity of the leaf to younger thistle plants. The common name 'hare's thistle' refers to its purported beneficial effects on hare and rabbits. Botanical characteristics This annual plant has a hollow, upright stem up to 30–100 cm high. It prefers full sun, and can tolerate most soil conditions. The flowers are hermaphroditic, and common pollinators include bees and flies. It spreads by seeds being carried by wind or water. This plant is considered an invasive species in many parts of the world, where it is found mostly in distur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Basal Leaves")
