True Mosses

The mosses are the largest of the three classes in the plant phylum Bryophyta. They have been divided into three subclasses the true mosses (Bryideae), the peat mosses (Sphagnideae), and the granite mosses (An-dreaeideae). The familiar small, green, and leafy moss plant is known as the gametophyte. This haploid multicellular phase is dominant in the moss life cycle. The mosses are the most broadly distributed of the three classes of bryophytes (which also includes liverworts and homworts). There are more than 15,000 species of mosses worldwide. 

Order 3.— Bryales, or true mosses, comprising the most highly evolved type of bryophytes. Examples Polytrichum, Funaria, Hypnum, and Mnium. 

Life History of Polytrichum Commune (A Typical True Moss).—... 

Paskevich series) contain abundant spores of true mosses (Bryales) indicative of late glacial age [14], Such a suggestion, however, is disproved by the presence of... 

Character-impact compound of oak- and treemoss true moss-character... 

Hand lotions, of the emulsion type, are also, in most cases, oil in water emulsions. A true emulsifying agent is usually used to form the emulsion and for cleansing properties. Vegetable gums, like tragacanth or Irish moss extract, are added, not only to stabilize the emulsion but to increase the emollient properties, because of the added viscosity effect. 

Comeau and Le Blanc found that a 4-h exposure of Funaria ky grometrica to ozone at 0.25-1.00 ppm stimulated the regenerative capacity of the moss leaves. This was not true for 6- and 8-h exposures. 

Chalcedony Moss agate, mocha stone Any color, translucent to opaque, rarely transparent, several varieties may mix in any one specimen Clear to gray translucent white/black or green tree-like inclusions (dendrites) not a true agate, should be referred to as chalcedony with inclusions... 

The inversion operation i which leads to the g/u classification of the electronic states is not a true symmetry operation because it does not commute with the Fermi contact hyperfine Hamiltonian. The operator i acts within the molecule-fixed axis system on electron orbital and vibrational coordinates only. It does not affect electron or nuclear spin coordinates and therefore cannot be used to classify the total wave function of the molecule. Since g and u are not exact labels, it was realised by Bunker and Moss [265] that electric dipole pure rotational transitions were possible in ll], the g/u symmetry breaking (and simultaneous ortho-para mixing) being relatively large for levels very close to the dissociation asymptote. The electric dipole transition moment for the 19,1 19,0 rotational transition in the ground electronic state was calculated... 

The liverworts are one of three classes in the plant phylum Bryophyta. The other two classes are mosses and hornworts. Liverworts are small, green, terrestrial plants. They do not have true roots, stems, or leaves. Instead, they have an above ground leaf-like structure, known as a thallus, and an underground structure, known as a rhizoid. Most liverworts are found in moist environments and they tend to be less resistant to desiccation than their relatives, the mosses. Many liverwort species are found in temperate North America, but most species grow in the tropics. 

Lichens are adapted to accumulate all the elements necessary for their life from the atmosphere. They have no root system and absorb very little from the substrate on which they grow. Atmospheric materials, including trace metals and radionuclides, can be concentrated by particulate entrapment, ion exchange, electrolytic sorption and processes mediated by metabolic energy (Crete et al., 1992). Passive particulate trapping is, however, thought to be the dominant uptake mechanism. This is also true for mosses which absorb nutrients directly through leaf and stem surfaces. 

True catalysis of esterolysis, (as opposed to rapid acyl transfer and formation of a stable intermediate) requires a second rapid step in which the acyl group is transferred to water or to an oxygen nucleophile. This has presented micellar histidines and imidazoles with a second role, in experiments first carried out separately by Tagaki, Moss, and Tonellato. In the simplest experimenta mixture of (49) with myristoylhistidine (72) reacts with p-nitrophenyl acetate first by nucleophilic attack of imidazole and then transfer of the acyl group to (49) in a rapid step. In the bifunctional surfactant (73) this process was shown to be intermolecular (but presumably intramicellar). The acylimidazole can be observed spectroscopically when the substrate is p-nitrophenyl hexanoate. Similar conclusions are recorded in a study by Tonellato, who additionally... 

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