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Delphinieae
Delphinieae is a tribe of flowering plants in the family Ranunculaceae. It comprises 4 genera found in Eurasia, North America, and Africa. Description Some species are perennial, whereas others are annual. The leaves are palmate with alternate (spiral) phyllotaxis. The inflorescences are racemose, typically with blue flowers. The flowers have five sepals and a zygomorphic shape. That is, the flowers are symmetrical in only one plane. In most species, the inner petals, which are reduced and completely enclosed by the sepal whorl, have a pair of nectar spurs that force pollinators to move back and forth to get nectar from both spurs. The petals are also dorsally spurred. Flowers tend to have many stamens. Flowers have varying numbers of carpels: 3 in '' Staphisagria'', 3–5 in ''Aconitum'', 6–13 in '' Gymnaconitum'', 1 in ''Delphinium'' subg. ''Consolida'', and 3–5 in other subgenera of ''Delphinium''. The flowers are protandrous, meaning that they are male before they are fem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delphinium
''Delphinium'' is a genus of about 300 species of annual and perennial flowering plants in the family (biology), family Ranunculaceae, native species, native throughout the Northern Hemisphere and also on the high mountains of tropical Africa. The genus was erected by Carl Linnaeus. All members of the genus ''Delphinium'' are toxic to humans and livestock. The common name larkspur is shared between perennial ''Delphinium'' species and annual species of the genus ''Consolida''. Molecular data show that ''Consolida'', as well as another segregate genus, ''Aconitella'', are both embedded in ''Delphinium''. The genus name ''Delphinium'' derives from the Ancient Greek word () which means "dolphin", a name used in ''De Materia Medica'' for some kind of larkspur. Pedanius Dioscorides said the plant got its name because of its dolphin-shaped flowers. Habitat Species with short stems and few flowers such as ''Delphinium nuttallianum'' and ''Delphinium bicolor'' appear in habitats like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ranunculaceae
Ranunculaceae (, buttercup or crowfoot family; Latin "little frog", from "frog") is a family (biology), family of over 2,000 known species of flowering plants in 43 genera, distributed worldwide. The largest genera are ''Ranunculus'' (600 species), ''Delphinium'' (365), ''Thalictrum'' (330), ''Clematis'' (380), and ''Aconitum'' (300). Description Ranunculaceae are mostly herbaceous annuals or perennials, but some are woody climbers (such as ''Clematis'') or shrubs (e.g. ''Xanthorhiza''). Most members of the family have bisexual flowers which can be showy or inconspicuous. Flowers are solitary, but are also found aggregated in Cyme (botany), cymes, panicles, or spike (botany), spikes. The flowers are usually radially symmetrical but are also found to be bilaterally symmetrical in the genera ''Aconitum'' and ''Delphinium''. The sepals, petals, stamens and carpels are all generally free (not fused), the outer flower segments typically number four or five. The outer stamens may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aconitum
''Aconitum'' (), also known as aconite, monkshood, wolfsbane, leopard's bane, devil's helmet, or blue rocket, is a genus of over 250 species of flowering plants belonging to the family (biology), family Ranunculaceae. These herbaceous perennial plants are chiefly native plant, native to the mountainous parts of the Northern Hemisphere in North America, Europe, and Asia, growing in the moisture-retentive but well-draining soils of mountain meadows. Most ''Aconitum'' species are extremely poisonous and must be handled very carefully. Several ''Aconitum'' Hybrid (biology), hybrids, such as the Arendsii form of ''Aconitum carmichaelii'', have won gardening awards—such as the Royal Horticultural Society's Award of Garden Merit. Some are used by florists. Etymology The name ''aconitum'' comes from the Greek word , which may derive from the Greek ''akon'' for dart (missile), dart or javelin, the tips of which were poisoned with the substance, or from ''akonae'', because of the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staphisagria
''Staphisagria'' is a genus in the family Ranunculaceae native to the Mediterranean. It used to be a subgenus or section in the genus ''Delphinium'', but molecular evidence suggests it should be a genus. Species list There are three species in ''Staphisagria'': *'' Staphisagria macrosperma'' Spach = ''Delphinium staphisagria'' L. *'' Staphisagria requienii'' (DC.) Spach = ''Delphinium requienii'' DC. *'' Staphisagria picta'' (Willd.) Jabbour = ''Delphinium pictum'' Willd. Or two, as some botanists think ''S. requienii'' and ''S. picta'' should be united as one species, with ''S. picta'' treated as ''S. requienii'' subsp. ''picta''. See also * ''Aconitum'' * ''Delphinium ''Delphinium'' is a genus of about 300 species of annual and perennial flowering plants in the family (biology), family Ranunculaceae, native species, native throughout the Northern Hemisphere and also on the high mountains of tropical Africa. T ...'' References {{Taxonbar, from=Q4279137 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nectar Spur
A nectar spur is a hollow extension of a part of a flower. The spur may arise from various parts of the flower: the sepals, petals, or hypanthium, and often contain tissues that secrete nectar Nectar, (nectaries). Nectar spurs are present in many clades across the Flowering plant, angiosperms, and are often cited as an example of List of examples of convergent evolution, convergent evolution. Taxonomic significance Spur length can be an important diagnostic character for taxonomy, useful in species identification. For example, Yadon's piperia can be distinguished from ''Platanthera elegans'', an extremely similar species in section ''Piperia'' (Orchidaceae), by the unusually short length of its spur. Ecology and evolution The presence of nectar spurs in a clade of plants is associated with evolutionary processes such as coevolution (two-sided evolution) and pollinator shifts (one-sided evolution). Like variations in floral tube length, variation in nectar spur length has bee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Consolida
''Consolida'' is a genus of about 40 species of annual flowering plants in the family Ranunculaceae, native to western Europe, the Mediterranean and Asia. Phylogenetic studies show that ''Consolida'' is actually an annual clade nested within the genus ''Delphinium'' and it has been treated as a synonym of ''Delphinium'' in Kew's Plants of the World Online. The name of the genus comes from an archaic use of ''consolidation'', meaning "healing", in reference to the plant's medieval use for healing wounds. ''Consolida'' differs from other species of ''Delphinium'' (mostly perennials) in the flower structure, with only one united petal, rather than the four separate petals (or more in cultivars) found in other delphiniums, and in the fruit, which comprises a single follicle, instead of a cluster of three to five together. It is a popular garden plant and cut flower, grown from seed every year, with numerous cultivars in shades of pink, blue, purple and white. In seed catalogues it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch (geology), epoch of the Paleogene Geologic time scale, Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from Ancient Greek (''olígos'') 'few' and (''kainós'') 'new', and refers to the sparsity of Neontology, extant forms of Mollusca, molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major chang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herkogamy
Herkogamy (or hercogamy) is the spatial separation of the anthers and stigma in hermaphroditic angiosperms. It is a common strategy for reducing self-fertilization. Common forms *Approach herkogamy - (called "pin flowers") is displayed when the stigma is displayed above the level of the anthers. This arrangement of sex organs causes floral visitors to first contact the stigma, before removing pollen from the anthers. This form of herkogamy is considered to be common, and is associated with a large, diverse fauna of floral visitors/pollinators. *Reverse herkogamy - (called "thrum flowers") is displayed when the stigma is recessed below the level of the anthers. This arrangement causes floral visitors to first contact the anthers before the stigma. For this reason, reverse herkogamy is believed to facilitate greater pollen export than approach herkogamy. This type of sex-organ arrangement is typically associated with Lepidopteran Lepidoptera ( ) or lepidopterans is an order ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Himalayas
The Himalayas, or Himalaya ( ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the Earth's highest peaks, including the highest, Mount Everest. More than list of highest mountains on Earth, 100 peaks exceeding elevations of above sea level lie in the Himalayas. The Himalayas abut on or cross territories of Himalayan states, six countries: Nepal, China, Pakistan, Bhutan, India and Afghanistan. The sovereignty of the range in the Kashmir region is disputed among India, Pakistan, and China. The Himalayan range is bordered on the northwest by the Karakoram and Hindu Kush ranges, on the north by the Tibetan Plateau, and on the south by the Indo-Gangetic Plain. Some of the world's major rivers, the Indus River, Indus, the Ganges river, Ganges, and the Yarlung Tsangpo River, Tsangpo–Brahmaputra River, Brahmaputra, rise in the vicinity of the Himalayas, and their combined drainage basin is home to some 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenogamy
Xenogamy (Greek ''xenos''=stranger, ''gamos''=marriage) is the transfer of pollen grains from the anther to the stigma of a different plant. This is the only type of cross pollination which during pollination brings genetically different types of pollen grains to the stigma. The term xenogamy (along with geitonogamy and autogamy) was first suggested by Kerner in 1876.{{cite book, last=Darwin, first=Charles, title=More Letters of Charles Darwin, Volume 2, date=August 2006, publisher=Echo Library, isbn=978-1-4068-0482-9 , url=https://books.google.com/books?id=X9vMhLOiTmQC&dq=Xenogamy&pg=PA668, access-date=25 February 2012, page=668 Cross-pollination involves the transfer of pollen grains from the flower of one plant to the stigma of the flower of another plant. The main characteristics which facilitate cross-pollination are: * Herkogamy: Flowers possess some mechanical barrier on their stigmatic surface to avoid self-pollination, e.g. presence of gynostegium and pollinia in '' C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
