|
Erysimum
''Erysimum'', or wallflower, is a genus of flowering plants in the cabbage family, Brassicaceae. It includes more than 150 species, both popular garden plants and many wild forms. ''Erysimum'' is characterised by star-shaped and/or two-sided) trichomes growing from the stem, with yellow, red, pink or orange flowers and multiseeded seed pods. Morphology Wallflowers are annuals, herbaceous perennials or sub-shrubs. The perennial species are short-lived and in cultivation treated as biennials. Most species have stems erect, with a covering of bifid hairs, usually 25 ± 53cm × 2–3mm in size. The leaves are narrow and fixed. The lower leaves are broad and round with backwardly directed lobes, 50–80mm × 0.5–3mm. Stem leaves are linear, entire, growing whitish with 2-fid hairs; 21–43mm × 1.5–2mm. Flower clusters grow at intervals on short equal stalks along the stem, with bright yellow to red or pink bilateral flowers. Flowering occurs during spring and summer. One sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysimum Nevadense
''Erysimum nevadense'' is a perennial short-lived herb endemic to the Sierra Nevada of Spain, although there are some citations in the nearby Sierra de Gádor (Almería). This wallflower occurs between 1,700 and 2,700 m above sea level in subalpine scrublands and alpine meadows. It may be treated as a narrowly circumscribed single species, one of a group or complex of six separate species, or as a more broadly circumscribed species with six subspecies. Description ''Erysimum nevadense'' sensu stricto (synonym ''Erysimum nevadense'' subsp. ''nevadense'') is a biennial or perennial plant, generally branched with multiple flowering stems, usually less than high. It is well supplied with hairs, most of which are boat-shaped (navicular), although some are three-rayed. Its leaves, which may appear greyish-green because of the hairs, are much narrower than long, usually long by wide. The flowering stems, excluding the raceme of flowers, are long. Individual flowers have yellow pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysimum Scoparium
''Erysimum scoparium'' is a species of flowering plant in the family Brassicaceae, native to the Canary Islands. It is a shrubby species of Erysimum, wallflower with purplish flowers found at high altitudes. Description ''Erysimum scoparium'' is a small shrubby perennial plant. It has stiff, linear to slightly pointed leaves. The flowers are arranged on upright stems. They darken to a purplish colour as they mature. The seed pods (Silique, siliquae) are held more or less erect and have brown seeds. A subspecies, ''E. scoparium'' subsp. ''cinereum'' has been distinguished by its more erect habit and longer inflorescences. Plants from Gran Canaria have broader leaves and dark brown rather than yellowish brown seeds, and have been separated as ''E. albescens'' by some sources. File:Erysimum scoparium.jpg, Flowers File:Erysimum scoparium kz6.jpg, Seedpods Taxonomy ''Erysimum scoparium'' was first described, as ''Cheiranthus scoparius'', by Pierre Marie Auguste Brousson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysimum Franciscanum
''Erysimum franciscanum'', commonly known as the Franciscan wallflower or San Francisco wallflower, is a plant endemic to the northern California coast, from Sonoma to Santa Cruz Counties. It is a member of the genus ''Erysimum'' in the mustard family, the Brassicaceae. The plant is a biennial or short-lived perennial.Dwyer, DThe Biogeography of the San Francisco Wallflower/ref> The flowers are cream-colored to yellow, with four sepals and four petals arranged in a cross shape, as is characteristic of the Brassicaceae. It flowers from late winter to late spring. The plant prefers open scrubby areas with a fair amount of sunlight, but can flourish on a range of soils including disintegrating serpentine, gravelly and sandy soils. It is fairly easily cultivated in gardens. Although not formally recognized as endangered, the Franciscan wallflower has a limited, discontinuous distribution. It is monitored at the Presidio of San Francisco The Presidio of San Francisco (originall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysimum Kykkoticum
''Erysimum kykkoticum'' is a species of flowering plant in the family Brassicaceae. It is endemic to the Mediterranean island of Cyprus, where it is found only in the Xeros River valley in the western Troodos Mountains. The species' range measures less than 3 hectares and its population is estimated to number less than 800 plants. Its natural habitats are Mediterranean-type shrubby vegetation and rocky areas. It is threatened by forest fires, drought, forestry, and road construction. Taxonomy ''Erysimum kykkoticum'' is a rather basal species in its genus and is most closely related to a clade that includes '' Erysimum cheiri''. Description Compared to similar-looking ''Euphorbia'' and '' Matthiola'' species that grow in similar habitats, ''Erysimum kykkoticum'' has spoon-faced and rather large leaves. Distribution and habitat The species is endemic to Cyprus, where it occupies an extremely small range spanning less than 3 hectares. It is only found in a locality called Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brassicaceae
Brassicaceae () or (the older but equally valid) Cruciferae () is a medium-sized and economically important Family (biology), family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple (although are sometimes deeply incised), lack stipules, and appear alternately on stems or in Rosette (botany), rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall (or septum). The family contains 372 genera and 4,060 accepted species. The largest genera are ''Draba'' (440 species), ''Erysimum'' (261 species), ''Lepidium'' (234 species), ''Cardamine'' (233 species), and ''Alyssum'' (207 species). , it was divided into two subfamilies, Brassicoideae and Aethionemoideae. The family contains the cruciferous vegetable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erysimum Etnense
''Erysimum etnense'' is a short-lived, polycarpic perennial herb endemic and found exclusively on Mount Etna, in Sicily Sicily (Italian language, Italian and ), officially the Sicilian Region (), is an island in the central Mediterranean Sea, south of the Italian Peninsula in continental Europe and is one of the 20 regions of Italy, regions of Italy. With 4. ..., Italy. It grows from 1000 to 2000 metres above sea level and inhabits '' Genista aetnensis'' shrublands. References etnense Endemic flora of Sicily Mount Etna {{Brassicales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sisymbrium Officinale
''Sisymbrium officinale'', the hedge mustard, (formerly ''Erysimum officinale'') is a plant in the family Brassicaceae. Description It is distinct from the mustard plants which belong to the genus ''Brassica''. ''S. officinale'' is similar to other ''Sisymbrium'', but differs in its tall, erect stems with tiny flowers and fruits that are compacted parallel to the stem instead of hanging free. ''S.officinale'' grows to 80 cm high. The lower leaves are broad with two or three lateral lobes. The flowers are about 4 mm across and yellow. Fruits are long and without hairs when young but show hairs when mature and reach 18 mm long on racemes pressed close to the stems. Hedge-mustard is food for the caterpillars of some Lepidoptera, such as the small white ('' Pieris rapae''). Distribution Once indigenous to North Africa and southern Europe, but found in Ireland, Wales and England and also in the highlands of Scotland. It is found on roadsides, wasteland and as a weed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Etna
Mount Etna, or simply Etna ( or ; , or ; ; or ), is an active stratovolcano on the east coast of Sicily, Italy, in the Metropolitan City of Catania, between the cities of Messina, Italy, Messina and Catania. It is located above the Convergent boundary, convergent plate margin between the African Plate and the Eurasian Plate. It is one of the tallest active volcanoes in Europe, and the tallest peak in Italy south of the Alps with a current height (September 2024) of , though this varies with summit eruptions. For instance, in 2021 the southeastern crater reached a height of , but was then surpassed by the Voragine crater after the summer 2024 eruptions. Etna covers an area of with a basal circumference of . This makes it by far the largest of the three volcanism in Italy, active volcanoes in Italy, being about two and a half times the height of the next largest, Mount Vesuvius. Only Teide, Mount Teide on Tenerife in the Canary Islands surpasses it in the whole of the Euro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic (ecology)
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
