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Phryma Leptostachya
''Phryma leptostachya'', or lopseed, is a perennial herb of the genus ''Phryma''. When distinguished from '' Phryma oblongifolia'' and ''Phryma nana'', it is native to eastern North America. The plant stands about 0.3 to 1.0 meters tall, and the inflorescences bear a number of small (4 mm) tube-shaped white to pink flowers. Taxonomy ''Phryma leptostachya'' was first described by Carl Linnaeus in 1753. It was the only species he placed in his genus ''Phryma''. Two further species were later described by the Japanese botanist Gen-ichi Koidzumi, ''Phryma oblongifolia'' and ''Phryma nana''. However, these species were generally not accepted, and populations in Asia and North America were usually treated as the single species ''Phryma leptostachya'', being distinguished only at the rank of subspecies and variety. In 2017, treating all three as full species was supported by morphological and earlier molecular phylogenetic evidence, and all three are accepted by Plants of the Worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phryma Leptostachya 2, Lopseed, GFG, Howard County, Md, Helen Lowe Metzman 2019-10-23-20
''Phryma'' is a genus of flowering plant in the family Phrymaceae, native to temperate Asia and eastern North America. Taxonomy The genus ''Phryma'' was erected by Carl Linnaeus in 1753 with the sole species ''Phryma leptostachya''. The Japanese botanist Gen-ichi Koidzumi proposed separating Asian populations, into ''Phryma oblongifolia'' in 1929 and further into ''Phryma nana'' in 1939. However, these species were generally not accepted, and populations in Asia and North America were usually treated as the single species ''Phryma leptostachya'', being distinguished only at the rank of subspecies and variety. In 2014, it was again proposed to separate Asian and North American populations into full species, ''P. oblongifolia'' and ''P. leptostachya'' respectively. In 2016, Japanese populations were again separated into ''P. oblongifolia'' and ''P. nana''. All three species are accepted by Plants of the World Online, , although other sources may continue to use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopseed (21064042460)
''Phryma leptostachya'', or lopseed, is a perennial herb of the genus ''Phryma''. When distinguished from '' Phryma oblongifolia'' and ''Phryma nana'', it is native to eastern North America. The plant stands about 0.3 to 1.0 meters tall, and the inflorescences bear a number of small (4 mm) tube-shaped white to pink flowers. Taxonomy ''Phryma leptostachya'' was first described by Carl Linnaeus in 1753. It was the only species he placed in his genus ''Phryma''. Two further species were later described by the Japanese botanist Gen-ichi Koidzumi, ''Phryma oblongifolia'' and ''Phryma nana''. However, these species were generally not accepted, and populations in Asia and North America were usually treated as the single species ''Phryma leptostachya'', being distinguished only at the rank of subspecies and variety. In 2017, treating all three as full species was supported by morphological and earlier molecular phylogenetic evidence, and all three are accepted by Plants of the Worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial Plant
In horticulture, the term perennial (''wikt:per-#Prefix, per-'' + ''wikt:-ennial#Suffix, -ennial'', "through the year") is used to differentiate a plant from shorter-lived annual plant, annuals and biennial plant, biennials. It has thus been defined as a plant that lives more than 2 years. The term is also loosely used to distinguish plants with little or no woody growth (secondary growth in Tree girth measurement, girth) from trees and shrubs, which are also technically ''perennials''. Notably, it is estimated that 94% of plant species fall under the category of perennials, underscoring the prevalence of plants with lifespans exceeding two years in the botanical world. Perennials (especially small flowering plants) that grow and bloom over the spring and summer, die back every autumn and winter, and then return in the spring from their rootstock or other overwintering structure, are known as Herbaceous plant, herbaceous perennials. However, depending on the rigours of the loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbaceous Plant
Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of the '' Shorter Oxford English Dictionary'' defines "herb" as: # "A plant whose stem does not become woody and persistent (as in a tree or shrub) but remains soft and succulent, and dies (completely or down to the root) after flowering"; # "A (freq. aromatic) plant used for flavouring or scent, in medicine, etc.". (See: Herb) The same dictionary defines "herbaceous" as: # "Of the nature of a herb; esp. not forming a woody stem but dying down to the root each year"; # "BOTANY Resembling a leaf in colour or texture. Opp. scarious". Botanical sources differ from each other on the definition of "herb". For instance, the Hunt Institute for Botanical Documentation includes the condition "when persisting over more than one growing season, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phryma Oblongifolia
''Phryma oblongifolia'' is a species of flowering plant in the family Phrymaceae, native from temperate Asia southwards to the Himalayas and north Vietnam. It was first described by Gen-ichi Koidzumi in 1929. Its status as a separate species was not usually accepted, and it was treated as a variety of ''Phryma leptostachya''. In 2014, the distinctiveness of North American ''P. leptostachya'' and Asian ''P. oblongifolia'' was supported, based on morphological evidence and a previous molecular phylogenetic study. , the species is recognized by Plants of the World Online Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew. History Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online i .... References Phrymaceae Flora of temperate Asia Flora of West Himalaya Flora of Nepal Flora of East Himalaya Flora of Assam (region) Flora of Vie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflorescence
In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a main axis (Peduncle (botany), peduncle) and by the timing of its flowering (determinate and indeterminate). Morphology (biology), Morphologically, an inflorescence is the modified part of the Shoot (botany), shoot of spermatophyte, seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internode (botany), internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. General characteristics Inflorescences are described by many different charact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern Taxonomy (biology), taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was the son of a curate and was born in Råshult, in the countryside of Småland, southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Plant Names Index
The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species and genus. It includes basic bibliographical details associated with the names. Its goals include eliminating the need for repeated reference to primary sources for basic bibliographic information about plant names. The IPNI also maintains a list of standardized Author citation (botany), author abbreviations. These were initially based on Authors of Plant Names, Brummitt & Powell (1992), but new names and abbreviations are continually added. Description IPNI is the product of a collaboration between The Royal Botanic Gardens, Kew (Index Kewensis), The Harvard University Herbaria (Gray Herbarium Index), and the Australian National Herbarium (Australian Plant Name Index, APNI). The IPNI database is a collection of the names registered by the three cooperating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gen-ichi Koidzumi
was a Japanese botanist, author of several papers and monographs on phytogeography including work on roses and Amygdaloideae (Rosaceae), maples (Aceraceae), mulberries (the genus '' Morus''), and many other plants. His name is sometimes transliterated as Gen’ichi or Gen-Iti, or as Koizumi. Biography Gen-ichi Koidzumi was born in Yonezawa in Yamagata Prefecture in 1883. After graduating from the Sapporo Agricultural College, he studied biology at Tokyo Imperial University from 1905, continuing his studies there under Matsumura Jinzō, and receiving his doctorate in 1916. In 1919, he was appointed assistant professor at Kyoto Imperial University, where he remained (other than for a tour of the herbaria of Europe and the United States from 1925 to 1927) until his retirement in 1943; he was promoted to full professor in 1936. In 1932, he founded the Societas Phytogeographica and the journal '' Acta Phytotaxonomica et Geobotanica''. Koidzumi died in his hometown of Yonezawa in 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetics, phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in Taxonomy (biology), taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
