|
Maidenhair Moss
''Fissidens adianthoides'', the maidenhair pocketmoss, is a moss in the family Fissidentaceae. It was first collected by Hedwig in 1801. It is found all over North America and even in Greenland and Alaska. The Nitinaht First Nations of Vancouver Island used maidenhair moss to bandage wounds. It was named by the Anglo-Saxons because it resembles pubic hair. Geographic distribution Habitat It is found in shady sites such as nearby moving water, near waterfalls, soil, open fields of grass, around the forest floor, decaying wood, on dripping limestone and stone rocks. This moss can be commonly found on damp or wet soil and peat. It is scarcely found on decaying wood. Distribution Worldwide distribution: It is vastly distributed in the forests of the Northern Hemisphere, extending from the arctic, alpine and prairie regions, often in more sheltered locations. It is widely distributed across North America. In context of the national and state/provincial distribution of ''Fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Hedwig
Johann Hedwig (8 December 1730 – 18 February 1799), also styled as Johannes Hedwig, was a German botanist notable for his studies of mosses. He is sometimes called the "father of bryology". He is known for his particular observations of sexual reproduction in the cryptogams. Many of his writings were in Latin, and his name is rendered in Latin as Ioannis Hedwig or Ioanne Hedwig. Early life Hedwig was born in Brașov, Transylvania, on 8 December 1730. As the son of a shoemaker, he grew up in poverty. It was in his childhood he became fascinated with mosses.Isely, Duane. One Hundred and One Botanists. Purdue University Press, 2002. He went on to study medicine at the University of Leipzig, and received his medical degree in 1759. Career After receiving his degree, Hedwig worked as a physician for the next twenty years. When he was not granted a license to practice in Transylvania with his Leipzig degree, he worked as a general practitioner in Chemnitz. It was during this time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissidens Adianthoides (c, 145042-474544) 1827
''Fissidens adianthoides'', the maidenhair pocketmoss, is a moss in the family Fissidentaceae. It was first collected by Hedwig in 1801. It is found all over North America and even in Greenland and Alaska. The Nitinaht First Nations of Vancouver Island used maidenhair moss to bandage wounds. It was named by the Anglo-Saxons because it resembles pubic hair. Geographic distribution Habitat It is found in shady sites such as nearby moving water, near waterfalls, soil, open fields of grass, around the forest floor, decaying wood, on dripping limestone and stone rocks. This moss can be commonly found on damp or wet soil and peat. It is scarcely found on decaying wood. Distribution Worldwide distribution: It is vastly distributed in the forests of the Northern Hemisphere, extending from the arctic, alpine and prairie regions, often in more sheltered locations. It is widely distributed across North America. In context of the national and state/provincial distribution of ''Fiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensitivity (physiology)
In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity (excitability). Sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanoreceptors. When a stimulus is detected by a sensory receptor, it can elicit a reflex via stimulus transduction. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level of strength must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asulam
Asulam is a herbicide invented by May & Baker Ltd , internally called M&B9057, that is used in horticulture and agriculture to kill bracken Bracken (''Pteridium'') is a genus of large, coarse ferns in the family Dennstaedtiaceae. Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs ... and docks. It is also used as an antiviral agent. It is currently marketed, by United Phosphorus Ltd - UPL, as "Asulox" which contains 400 g/L of asulam sodium salt. Asulam was declared not approved by the Commission Implementing Regulation (EU) No 1045/2011 of 19 October 2011 concerning the non-approval of the active substance asulam. Concerns included: lack of evidence concerning the fate of the toxic metabolite sulfanilamide and other metabolites; the poorly characterised nature of the impurities potentially present in the technical-grade product; toxicity to birds. This decision is gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissidens Adianthoides (d, 144109-473028) 0075
''Fissidens adianthoides'', the maidenhair pocketmoss, is a moss in the family Fissidentaceae. It was first collected by Hedwig in 1801. It is found all over North America and even in Greenland and Alaska. The Nitinaht First Nations of Vancouver Island used maidenhair moss to bandage wounds. It was named by the Anglo-Saxons because it resembles pubic hair. Geographic distribution Habitat It is found in shady sites such as nearby moving water, near waterfalls, soil, open fields of grass, around the forest floor, decaying wood, on dripping limestone and stone rocks. This moss can be commonly found on damp or wet soil and peat. It is scarcely found on decaying wood. Distribution Worldwide distribution: It is vastly distributed in the forests of the Northern Hemisphere, extending from the arctic, alpine and prairie regions, often in more sheltered locations. It is widely distributed across North America. In context of the national and state/provincial distribution of ''Fiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sporic Meiosis
Alternation of generations (also known as metagenesis or heterogenesis) is the predominant type of life cycle in plants and algae. It consists of a multicellular haploid sexual phase, the gametophyte, which has a single set of chromosomes alternating with a multicellular diploid asexual phase, the sporophyte which has two sets of chromosomes. A mature sporophyte produces haploid spores by meiosis, a process which reduces the number of chromosomes to half, from two sets to one. The resulting haploid spores germinate and grow into multicellular haploid gametophytes. At maturity, a gametophyte produces gametes by mitosis, the normal process of cell division in eukaryotes, which maintains the original number of chromosomes. Two haploid gametes (originating from different organisms of the same species or from the same organism) fuse to produce a diploid zygote, which divides repeatedly by mitosis, developing into a multicellular diploid sporophyte. This cycle, from gametophyte to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sporic Meiosis
Alternation of generations (also known as metagenesis or heterogenesis) is the predominant type of life cycle in plants and algae. It consists of a multicellular haploid sexual phase, the gametophyte, which has a single set of chromosomes alternating with a multicellular diploid asexual phase, the sporophyte which has two sets of chromosomes. A mature sporophyte produces haploid spores by meiosis, a process which reduces the number of chromosomes to half, from two sets to one. The resulting haploid spores germinate and grow into multicellular haploid gametophytes. At maturity, a gametophyte produces gametes by mitosis, the normal process of cell division in eukaryotes, which maintains the original number of chromosomes. Two haploid gametes (originating from different organisms of the same species or from the same organism) fuse to produce a diploid zygote, which divides repeatedly by mitosis, developing into a multicellular diploid sporophyte. This cycle, from gametophyte to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissidens Adianthoides (d, 144109-473028) 0080
''Fissidens adianthoides'', the maidenhair pocketmoss, is a moss in the family Fissidentaceae. It was first collected by Hedwig in 1801. It is found all over North America and even in Greenland and Alaska. The Nitinaht First Nations of Vancouver Island used maidenhair moss to bandage wounds. It was named by the Anglo-Saxons because it resembles pubic hair. Geographic distribution Habitat It is found in shady sites such as nearby moving water, near waterfalls, soil, open fields of grass, around the forest floor, decaying wood, on dripping limestone and stone rocks. This moss can be commonly found on damp or wet soil and peat. It is scarcely found on decaying wood. Distribution Worldwide distribution: It is vastly distributed in the forests of the Northern Hemisphere, extending from the arctic, alpine and prairie regions, often in more sheltered locations. It is widely distributed across North America. In context of the national and state/provincial distribution of ''Fiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissidens Adianthoides (d, 144109-473028) 0036
''Fissidens adianthoides'', the maidenhair pocketmoss, is a moss in the family Fissidentaceae. It was first collected by Hedwig in 1801. It is found all over North America and even in Greenland and Alaska. The Nitinaht First Nations of Vancouver Island used maidenhair moss to bandage wounds. It was named by the Anglo-Saxons because it resembles pubic hair. Geographic distribution Habitat It is found in shady sites such as nearby moving water, near waterfalls, soil, open fields of grass, around the forest floor, decaying wood, on dripping limestone and stone rocks. This moss can be commonly found on damp or wet soil and peat. It is scarcely found on decaying wood. Distribution Worldwide distribution: It is vastly distributed in the forests of the Northern Hemisphere, extending from the arctic, alpine and prairie regions, often in more sheltered locations. It is widely distributed across North America. In context of the national and state/provincial distribution of ''Fiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archegonia
An archegonium (pl: archegonia), from the ancient Greek ''ἀρχή'' ("beginning") and ''γόνος'' ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium. The archegonium has a long neck canal or venter and a swollen base. Archegonia are typically located on the surface of the plant thallus, although in the hornworts they are embedded. Bryophytes In bryophytes and other cryptogams sperm reach the archegonium by swimming in water films, whereas in Pinophyta and Angiosperms the pollen are delivered by wind or animal vectors and the sperm are delivered by means of a pollen tube. In the moss ''Physcomitrella patens'', archegonia are not embedded but are located on top of the leafy gametophore (s. Figure). The Polycomb protein FIE is expressed in the unfertilized egg cell (right) as the blue colour after GUS staining reveals. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distribution Map Of Fissidens Adianthoides
Distribution may refer to: Mathematics *Distribution (mathematics), generalized functions used to formulate solutions of partial differential equations *Probability distribution, the probability of a particular value or value range of a variable **Cumulative distribution function, in which the probability of being no greater than a particular value is a function of that value *Frequency distribution, a list of the values recorded in a sample *Inner distribution, and outer distribution, in coding theory *Distribution (differential geometry), a subset of the tangent bundle of a manifold *Distributed parameter system, systems that have an infinite-dimensional state-space *Distribution of terms, a situation in which all members of a category are accounted for *Distributivity, a property of binary operations that generalises the distributive law from elementary algebra *Distribution (number theory) *Distribution problems, a common type of problems in combinatorics where the goal is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antheridia
An antheridium is a haploid structure or organ producing and containing male gametes (called ''antherozoids'' or sperm). The plural form is antheridia, and a structure containing one or more antheridia is called an androecium. Androecium is also the collective term for the stamens of flowering plants. Antheridia are present in the gametophyte phase of cryptogams like bryophytes and ferns. Many algae and some Fungus, fungi, for example ascomycetes and water moulds, also have antheridia during their reproductive stages. In gymnosperms and angiosperms, the male gametophytes have been reduced to Pollen, pollen grains and in most of these the antheridia have been reduced to a single generative cell within the pollen grain. During pollination, this generative cell divides and gives rise to sperm cells. The female counterpart to the antheridium in cryptogams is the archegonium, and in flowering plants is the gynoecium. An antheridium typically consists of sterile cell (biology), cells a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
