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Agrostophyllum Elmeri
''Agrostophyllum'' is a genus with about ninety species from the orchid family (Orchidaceae). The genus name is derived from the Greek words ("grass") and ("leaf"), referring to the grass-like appearance of the leaves of some species. These epiphytic orchids occur in tropical lowland forests, growing on trunks or branches of trees. They are found from the Seychelles, Madagascar, India, Sri Lanka, Malaysia, Indonesia to the Pacific Islands. The center of diversity is to be found in New Guinea, with at least 45 species. These orchids have elongate, frequently pendulous stems with dense leaves that overlap at their base. They show peculiar, ball-like inflorescences of many bracts, bearing small flowers. Sections There are four sections in this genus :Schuiteman, A. et al. Revision of ''Agrostophyllum'' section ''Appendiculopsis'', with notes on the systematics of ''Agrostophyllum''; Orchid Monographs vol. 8. 1997 *'' Dolichodesme'' - elongated inflorescence which may have the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Ludwig Blume
Charles Ludwig de Blume or Karl Ludwig von Blume (9 June 1796, Braunschweig – 3 February 1862, Leiden) was a German-Dutch botanist. He was born at Braunschweig in Germany, but studied at Leiden University and spent his professional life working in the Dutch East Indies and in the Netherlands, where he was Director of the Rijksherbarium (state herbarium) at Leiden. His name is sometimes given in the Dutch language form Karel Lodewijk Blume, but the original German spelling is the one most widely used in botanical texts: even then there is confusion, as he is sometimes referred to as K.L. Blume (from Karl). He carried out extensive studies of the flora of southern Asia, particularly in Java, then a colony of the Netherlands. From 1823 to 1826 Blume was Deputy Director of Agriculture at the botanic garden in Bogor (Buitenzorg) in Java. In 1827 he became correspondent of the Royal Institute of the Netherlands. In 1855, he was elected a foreign member of the Royal Swedish Ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf
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 light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrostophyllum Acutum
''Agrostophyllum'' is a genus with about ninety species from the orchid family (Orchidaceae). The genus name is derived from the Greek words ("grass") and ("leaf"), referring to the grass-like appearance of the leaves of some species. These epiphytic orchids occur in tropical lowland forests, growing on trunks or branches of trees. They are found from the Seychelles, Madagascar, India, Sri Lanka, Malaysia, Indonesia to the Pacific Islands. The center of diversity is to be found in New Guinea, with at least 45 species. These orchids have elongate, frequently pendulous stems with dense leaves that overlap at their base. They show peculiar, ball-like inflorescences of many bracts, bearing small flowers. Sections There are four sections in this genus :Schuiteman, A. et al. Revision of ''Agrostophyllum'' section ''Appendiculopsis'', with notes on the systematics of ''Agrostophyllum''; Orchid Monographs vol. 8. 1997 *'' Dolichodesme'' - elongated inflorescence which may have the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appendicula
''Appendicula'', commonly known as stream orchids or 牛齿兰属 (niu chi lan shu), is a genus of flowering plants in the family Orchidaceae. Orchids in this genus are epiphytic, lithophytic or rarely terrestrial plants herbs with many flat, often twisted leaves and small resupinate, white or greenish flowers. The sepals are free from each other but the lateral sepals and labellum are fused to the base of the column. The genus ''Appendicula'' was first formally described in 1825 by Carl Ludwig Blume who published the description in ''Bijdragen tot de flora van Nederlandsch Indië''. The name ''Appendicula'' is the diminutive form of the Latin word ''appendix'' meaning "appendage" or "addition", hence "little appendage", referring to the "inward-facing appendages on the labellum". Orchids in the genus ''Appendicula'' occur from tropical and subtropical Asia to the western Pacific. List of species The following is a list of species of ''Appendicula'' accepted by the World Chec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petiole (botany)
In botany, the petiole () is the stalk that attaches the leaf blade to the stem, and is able to twist the leaf to face the sun. This gives a characteristic foliage arrangement to the plant. Outgrowths appearing on each side of the petiole in some species are called stipules. Leaves with a petiole are said to be petiolate, while leaves lacking a petiole are called sessile or apetiolate. Description The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves, the leaf stalk may be long, as in the leaves of celery and rhubarb, or short. When completely absent, the blade attaches directly to the stem and is said to be sessile. Subpetiolate leaves have an extremely short petiole, and may appear sessile. The broomrape family Orobanchaceae is an example of a family in which the leaves are always sessile. In some other plant groups, such as the speedwell genus '' Veronica'', petiolate and sessile leaves may occur in different species. In the grasses (Poaceae), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distichous
In botany, phyllotaxis () or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature. Leaf arrangement The basic arrangements of leaves on a stem are opposite and alternate (also known as spiral). Leaves may also be whorled if several leaves arise, or appear to arise, from the same level (at the same node) on a stem. With an opposite leaf arrangement, two leaves arise from the stem at the same level (at the same node), on opposite sides of the stem. An opposite leaf pair can be thought of as a whorl of two leaves. With an alternate (spiral) pattern, each leaf arises at a different point (node) on the stem. Distichous phyllotaxis, also called "two-ranked leaf arrangement" is a special case of either opposite or alternate leaf arrangement where the leaves on a stem are arranged in two vertical columns on opposite sides of the stem. Examples include various bulbous plants such as ''Boophone''. It also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appendiculopsis
''Agrostophyllum'' is a genus with about ninety species from the orchid family (Orchidaceae). The genus name is derived from the Greek words ("grass") and ("leaf"), referring to the grass-like appearance of the leaves of some species. These epiphytic orchids occur in tropical lowland forests, growing on trunks or branches of trees. They are found from the Seychelles, Madagascar, India, Sri Lanka, Malaysia, Indonesia to the Pacific Islands. The center of diversity is to be found in New Guinea, with at least 45 species. These orchids have elongate, frequently pendulous stems with dense leaves that overlap at their base. They show peculiar, ball-like inflorescences of many bracts, bearing small flowers. Sections There are four sections in this genus :Schuiteman, A. et al. Revision of ''Agrostophyllum'' section ''Appendiculopsis'', with notes on the systematics of ''Agrostophyllum''; Orchid Monographs vol. 8. 1997 *'' Dolichodesme'' - elongated inflorescence which may have the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympodia
Sympodial growth is a bifurcating branching pattern where one branch develops more strongly than the other, resulting in the stronger branches forming the primary shoot and the weaker branches appearing laterally. A sympodium, also referred to as a sympode or pseudaxis, is the primary shoot, comprising the stronger branches, formed during sympodial growth. The pattern is similar to dichotomous branching; it is characterized by branching along stems or hyphae. In botany, sympodial growth occurs when the apical meristem is terminated and growth is continued by one or more lateral meristems, which repeat the process. The apical meristem may be consumed to make an inflorescence or other determinate structure, or it may be aborted. Types If the sympodium is always formed on the same side of the branch bifurcation, e.g. always on the right side, the branching structure is called a helicoid cyme or bostryx. If the sympodium occurs alternately, e.g. on the right and then the left, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow horizontally. The rhizome also retains the ability to allow new shoots to grow upwards. A rhizome is the main stem of the plant that runs underground horizontally. A stolon is similar to a rhizome, but a stolon sprouts from an existing stem, has long internodes, and generates new shoots at the end, such as in the strawberry plant. In general, rhizomes have short internodes, send out roots from the bottom of the nodes, and generate new upward-growing shoots from the top of the nodes. A stem tuber is a thickened part of a rhizome or stolon that has been enlarged for use as a storage organ. In general, a tuber is high in starch, e.g. the potato, which is a modified stolon. The term "tuber" is often used imprecisely and is sometimes applied to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrostophyllum (section)
''Agrostophyllum'' is a genus with about ninety species from the orchid family (Orchidaceae). The genus name is derived from the Greek words ("grass") and ("leaf"), referring to the grass-like appearance of the leaves of some species. These epiphytic orchids occur in tropical lowland forests, growing on trunks or branches of trees. They are found from the Seychelles, Madagascar, India, Sri Lanka, Malaysia, Indonesia to the Pacific Islands. The center of diversity is to be found in New Guinea, with at least 45 species. These orchids have elongate, frequently pendulous stems with dense leaves that overlap at their base. They show peculiar, ball-like inflorescences of many bracts, bearing small flowers. Sections There are four sections in this genus :Schuiteman, A. et al. Revision of ''Agrostophyllum'' section ''Appendiculopsis'', with notes on the systematics of ''Agrostophyllum''; Orchid Monographs vol. 8. 1997 *'' Dolichodesme'' - elongated inflorescence which may have the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panicle
A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are often racemes. A panicle may have determinate or indeterminate growth. This type of inflorescence is largely characteristic of grasses such as oat and crabgrass, as well as other plants such as pistachio and mamoncillo. Botanists use the term paniculate in two ways: "having a true panicle inflorescence" as well as "having an inflorescence with the form but not necessarily the structure of a panicle". Corymb A corymb may have a paniculate branching structure, with the lower flowers having longer pedicels than the upper, thus giving a flattish top superficially resembling an umbel. Many species in the subfamily Amygdaloideae, such as hawthorns and rowans, produce their flowers in corymbs. up'' Sorbus glabrescens'' corymb with fruit See ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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