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Callicladium
''Callicladium'' is a monotypic genus of mosses belonging to the family Hypnaceae. The only species is ''Callicladium haldanianum''. The species was described by Howard Alvin Crum Howard Alvin Crum (July 14, 1922 – April 30, 2002) was an American botanist dedicated to the study of mosses, and was a renowned expert on the North American bryoflora. Early life Crum was born in Mishawaka, Indiana, and after he graduated hig ... in 1971. Synonyms for the species: * ''Brachythecium weinmannii'' (Nees) Paris * ''Heterophyllium sikokianum'' Sakurai * ''Hypnum weinmannii'' Nees References {{Taxonbar, from1=Q17289966, from2=Q15579180 Hypnales Monotypic moss genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypnaceae
Hypnaceae is a large family of moss with broad worldwide occurrence in the class Bryopsida, subclass Bryidae and order Hypnales. Genera include ''Hypnum'', '' Phyllodon'', and '' Taxiphyllum''. Ecology Some of the family species occur on the floor of Canadian boreal forests; an example of this occurrence is within the black spruce/feathermoss climax forest, often having moderately dense canopy and featuring a forest floor of feathermosses including, ''Hylocomium splendens'', ''Pleurozium schreberi'' and ''Ptilium crista-castrensis''. Classification The family Hypanaceae includes the following genera: *'' Acosta'' *'' Allorgea'' *'' Andoa'' *'' Austrohondaella'' *'' Breidleria'' *'' Bryocrumia'' *'' Bryosedgwickia'' *'' Buckiella'' *'' Callicladium'' *'' Campylophyllum'' *'' Caribaeohypnum'' *'' Ctenidiadelphus'' *'' Ctenidium'' *'' Cupressina'' *'' Cyathothecium'' *'' Dacryophyllum'' *'' Dolichotheca'' *'' Drepanium '' *'' Ectropotheciella'' *'' Ectropothec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Genus
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mosses
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) ''sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hornworts. Mosses typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically tall, though some species are much larger. ''Dawsonia'', the tallest moss in the world, can grow to in height. There are app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howard Alvin Crum
Howard Alvin Crum (July 14, 1922 – April 30, 2002) was an American botanist dedicated to the study of mosses, and was a renowned expert on the North American bryoflora. Early life Crum was born in Mishawaka, Indiana, and after he graduated high school, attended Western Michigan Teachers College (now Western Michigan University). Initially a German major, World War II interrupted his education. He joined the United States Army Air Force in 1942 and served in the Intelligence Division. He was stationed in North Africa and the Middle East working as a cryptographer. After the war, Crum returned to Western Michigan and changed his major from German to botany. He received his B.S. in 1947. The fall after receiving his undergraduate degree, he began his graduate work at the University of Michigan. He completed his Ph.D. in 1951 under direction of Harley H. Bartlett. Upon finishing his degree, he went to Stanford University for a 2-year postdoc, working with William C. Steere to stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypnales
Hypnales is the botanical name of an order of Bryophyta or leafy mosses. This group is sometimes called feather mosses, referring to their freely branched stems. The order includes more than 40 families and more than 4,000 species, making them the largest order of mosses. Description Hypnales are mosses with pinnately or irregularly branched, reclining stems, with varying appearances. The stem contains only a reduced central vascular bundle, which is seen as a recent derived trait in mosses. The stems are covered with paraphyllia or pseudoparaphyllia, reduced filamentous or scaly leaves. The ordinary stem leaves are ovate to lanceolate, often with leaf wing cells. The midvein is often limited to the lower half of the leaf blade, or has completely disappeared. The cells of the leaf blade are prosenchymatic, many times longer than wide, with pointed ends interlocking. The sporophyte consists of a regularly shaped sporangium on a long stalk or seta. The spores are distribut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
