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herbaceous plant
herbaceous plant , plant whose stem is soft and green and shows little growth of wood. The term is used to distinguish such plants from woody plants. Herbaceous plants, or herbs, as they are commonly called, may be annual —that is, the plants die after a year's growth, and the plants are... Read more |
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vegetative propagation
vegetative propagation the ability of plants to reproduce without sexual reproduction, by producing new plants from existing vegetative structures. Some plants, such as the Canada thistle and most bamboos, send out long underground stems that produce new plants, often at considerable distances from... Read more |
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annual
annual plant that germinates from seed, blossoms, produces seed, and dies within one year. Annuals propagate themselves by seed only, unlike many biennials and perennials. They are thus especially suited to environments that have a short growing season. Cultivated annuals are usually considered to... Read more |
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Henry Allan Gleason
Henry Allan Gleason , 1882-1975, American botanist, plant geographer, and plant ecologist. His floristic studies of North American vegetation led to his "individualistic concept of the plant community," which views each species as functioning independently within the plant community, a concept... Read more |
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Pteridophytes
Pteridophytes Pteridophtyes are a phylumof plants. They are the vascular plants (those having xylemand phloemtissues) that reproduce by releasing spores rather than seeds, and they include the highly diverse true ferns and other graceful, primarily... Read more |
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Robert Plant
Plant, Robert Singer, songwriter With the 1988 release of Now And Zen, Robert Plant celebrated his twentieth anniversary as a reigning vocalist of hard rock. Plant has been at rock music's forefront since he joined Led Zeppelin in 1968. His best-known songs, including "Stairway to Heaven" and... Read more |
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Milk thistle
Milk thistle Description Milk thistle (Silybum marianum or Cardus marianum ) is a plant used for treating liver disorders, breast-feeding problems , and other illnesses. The active ingredient of the herb, silymarin, is found in the ripe seeds of the plant. The milk thistle plant has a long stem,... Read more |
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perennial
perennial any plant that under natural conditions lives for several to many growing seasons, as contrasted to an annual or a biennial. Botanically, the term perennial applies to both woody and herbaceous plants (see stem ) and thus includes numerous members of the kingdom. In horticulture,... Read more |
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West African rain-forest floral region
West African rain-forest floral region Part of R. Good's (The Geography of the Flowering Plants, 1974) African sub-kingdom, which contains a rich but poorly documented flora which has provided some valuable economic plants, e.g. Coffea liberica, and others of more local importance, including... Read more |
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Augustin Pyrame de Candolle
Augustin Pyrame de Candolle , 1778-1841, Swiss botanist. Considered the most important Swiss botanist of his era, de Candolle wrote on a wide variety of botanical topics, from medical botany to philosophical treatises on plant morphology and systematics. He spent most of his career at the botanical... Read more |
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