Systems of Plant Classification
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TOPIC: Bentham and Hooker's System of Classification FACULTY: Isha Gaurav Department of Botany Email: [email protected]
Course: B.Sc Botany SEMESTER IV PAPER CODE: BOT CC 410 PAPER: Plant Systematics TOPIC: Bentham and Hooker's system of classification FACULTY: Isha Gaurav Department of Botany Email: [email protected] Bentham and Hooker's system of classification It is a natural system of classification and is based on important characters of the plants. Even today this system is being followed in India, United Kingdom and several other Commonwealth countries. It is also used in a number of herbaria and botanical gardens all over the world. It is a well known and widely accepted classification of seeded plants. It was proposed by two English botanists George Bentham (1800-1884) and Sir Joseph Dalton Hooker (1817- 1911). Their system of classification was published in 'Genera Plantarum' in three volumes and they had described 97,205 species of seeded plants in 202 orders (now referred to as families). In Bentham and Hooker's classification of plants, the present day 'orders' were referred to as 'cohorts' and 'families' as 'orders'. The seeded plants are divided into three classes 'Dicotyledonae,Gymnospermae and Monocotyledonae. Class I Dicotyledonae: Seeds of dicotyledonous plants contain two cotyledons. Leaves show reticulate venation. Flowers are tetramerous or pentamerous having four or five members in various floral whorls respectively. It includes three sub-classes ' Polypetalae, Gamopetalae and Monochlamydeae. Sub-class I Polypetalae:Plants having flowers with free petals come under polypetalae. The flowers are with distinct calyx and corolla. It is further divided into three series - Thalamiflorae, Disciflorae and Calyciflorae. Series (i) Thalamiflorae:It includes plants having flowers with dome or conical thalamus. -
The Linnaean Collections
THE LINNEAN SPECIAL ISSUE No. 7 The Linnaean Collections edited by B. Gardiner and M. Morris WILEY-BLACKWELL 9600 Garsington Road, Oxford OX4 2DQ © 2007 The Linnean Society of London All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage or retrieval system, without permission in writing from the publisher. The designations of geographic entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of the publishers, the Linnean Society, the editors or any other participating organisations concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. The Linnaean Collections Introduction In its creation the Linnaean methodology owes as much to Artedi as to Linneaus himself. So how did this come about? It was in the spring of 1729 when Linnaeus first met Artedi in Uppsala and they remained together for just over seven years. It was during this period that they not only became the closest of friends but also developed what was to become their modus operandi. Artedi was especially interested in natural history, mineralogy and chemistry; Linnaeus on the other hand was far more interested in botany. Thus it was at this point that they decided to split up the natural world between them. Artedi took the fishes, amphibia and reptiles, Linnaeus the plants, insects and birds and, while both agreed to work on the mammals, Linneaus obligingly gave over one plant family – the Umbelliforae – to Artedi “as he wanted to work out a new method of classifying them”. -
Bentham and Hooker Classification Faculty Name - Dr Piyush Kumar Rai Email – [email protected]
Course - B.Sc. Botany Semester - II Paper Code - BOT GE202 Paper Name – Plant Ecology and Taxonomy Topic - Bentham and Hooker Classification Faculty Name - Dr Piyush Kumar Rai Email – [email protected] Bentham and Hooker Classification George Bentham (1800 – 1884) Joseph Hooker (1817 – 1911) It was Proposed by George Bentham ( 1800 – 1884 ) and Joseph Dalton Hooker (1817 – 1911 ) in their Genera Plantarum published during July (1862 ) & April ( 1883 ) George Bentham (1800 – 1884) and Joseph Dalton Hooker ( 1817 ) – 1911) , the two British botanist who were associated with the Royal Botanic garden at kew ( England) gave most important and easily workable system of classification of angiosperms and published it in three volume of ‘Genera plantarum ‘ The first part of Genera plantarum appeared in July 1882 and the last part in April 1883 . This was the greatest taxonomic work ever produced in the united kingdom and ever since been an inspiration to generations of kew botanists . Although Bentham and Hooker’s system of classification was based on that of A.P. de Candolle but greater stress was given on contrast between free and fused petals . Their symptom was widely accepted in Britain and commonwealth countries but in Europe and North America it did not hold the much ground . Bentham and Hooker divided the seed plants into Dicotyledons, Gymnosperms and Monocotyledons. They placed Ranales in beginning and grasses at the end . The following is the summary of Bentham & Hooker’s system. DICOTYLEDONS : A . Polypetalae ( petals are free ) Series l Thalamiflorae Order 1. Ranales eg. Ranunculaceae, Magnollaceae e.t.c Order 2. Parietales eg. Papaveraceae , Cruciferae e.t.c Order 3. -
The Linnaean Botanical Nomenclature(S) As “A Point of View on the World”
From theory of ideas to theory of succedaneum: The Linnaean botanical nomenclature(s) as “a point of view on the world” Philippe Selosse 1. Introduction Botanical nomenclature did not arise by spontaneous generation: its elaboration is the continuation of the Greek and Latin folk nomenclature, which was based on processes of classification and categorization called folk processes (Berlin 1972), and of the logical nomenclature of the sixteenth century (Selosse 2004, 2007). On the whole, the elaboration of nomenclature took a great deal of time, more or less twenty centuries. The consequence is that nomenclature is not the fact of one speaker, but the product of many speakers over a very long period of time, connected with several epistemic contexts. Moreover, these contexts are characterized by non-specialization with regard to disciplines: philosophy, language and botanical research were simultaneously considered. The aim of this paper, therefore, is not to represent Linnaeus as a pioneer or a maker of binominal nomenclature out of nothing. On the one hand, Linnaeus ap- pears, not as person, but through his works, as the representative, the paragon, of the turning point in another epistemic context: his work constitutes a gen- uine synthesis of earlier theories and those that followed. On the other hand, the Linnaean nomenclature is, for the first time, one which is self-conscious, that is, which is conscious of being a system as such: in this scientific consciousness we can paradigmatically observe the articulation of plant classification in nomen- clature, and vice versa. My aim is to draw from Linnaeus’ works his theory of nomenclature within the epistemic context of the Enlightenment, that is, by taking into consideration its own complexity of blended scientific, philosophi- cal and linguistic conceptualizations. -
Paper 03,Group B;BENTHAM and HOOKER SYSTEM of CLASSIFICATION,Dr.Dilip Kumar Jha, (Lecture Series No
BOTANY,Degrre 2(H. ),Paper 03,group B;BENTHAM AND HOOKER SYSTEM OF CLASSIFICATION,Dr.Dilip Kumar Jha, (lecture series No. 08). Among all the natural system of classification,the system jointly proposed by George Bentham (1800_1884) and Sir Joseph Dalton Hooker (1817_1911) has gained much popularity. Both of them were working in Royal Botanical Garden,Kew,England. They jointly published their natural system in three volume of Genera Plantarum (1862_1883) In which all the genera of seed plants known upto that time,were described and classified on the basis of all available natural characters or affinities. In their classification they described 97205 species of 7569 genera belonging to 202 families of Angiosperm under 40 orders and 15 series. This system is based on that of A.P.deCandole but its text differs from latter system. Important Features of the System: 1. This was the last natural system and was not affected by concept of evolution,although it was proposed after publication of Darwin’s theory of evolution. 2. They have placed Gymnosperm between two groups (Dicot and Monocot ) of Angiosperm. 3. They have replaced the term order and family by Cohorts and Natural Orders respectively. 4. In their system,every genus was studied anew;the materials were made available from the British and continental herbaria. OUTLINE OF THE CLASSIFICATION Kingdom:PLANTAE Subkingdom: 1.CRYPTOGAMIA Subkingdom: 2.PHANEROGAMIA or SPERMATOPHYTA. Cryptogamia includes all the flower less plants whereas Spermatophyta includes all the flowering plants which bear seed. Subkingdom Phanerogamia has been divided into one Groups/Divisions: 1.DICOTYLEDONAE 2.GYMNOSPERMAE 3.MONOCOTYLEDONAE All the groups have been further divided into Classes,classes into series ,series into Cohorts and cohorts into Natural orders. -
Linnaeus' Philosophia Botanica
linnaeus’ Philosophia Botanica STEPHEN FREER Stephen Freer, born at Little Compton in1920, was a classical scholar at Eton and Trinity College Cambridge. In 1940, he was approached by the Foreign Office and worked at Bletchley Park and in London. Later, Stephen was employed by the Historical Manuscripts Commission, retiring in 1962 due to ill health. He has continued to work since then, first as a volunteer for the MSS department of the Bodleian Library with Dr William Hassall, and then on a part-time basis at the Oxfordshire County Record. In 1988, he was admitted as a lay reader in the Diocese of Oxford. His previous book was a translation of Wharton’s Adenographia, published by OUP in 1996. A fellow of the Linneau Society of London, Stephen lives with his wife Frederica in Gloucestershire. They have a daughter, Isabel. COVER ILLUSTRATION Rosemary Wise, who designed and painted the garland of flowers on the book cover, is the botanical illustrator in the Department of Plant Sciences in the University of Oxford, associate staff at the Royal Botanic Gardens, Kew, and a fellow of the Linneau Society of London. In1932 Carl Linnaeus made an epic journey to Lapland, the vast area across arctic Norway, Sweden, and Finland. In 1988, to mark the bicentenary of the Linneau Society of London, a group from Great Britain and Sweden retraced his route. Rosemary, was the official artist and the flowers featured here are taken from ones painted at that time, plants with which Linnaeus would have been familiar. The garland of flowers surrounds an image of the medallion portrait of Linnaeus by C. -
Bentham and Hooker's Classification (1862 – ’83)
Bentham and Hooker's classification (1862 – ’83) George Bentham and Joseph Dalton Hooker - Two English taxonomists who were closely associated with the Royal Botanical Garden at Kew, England have given a detailed classification of plant kingdom, particularly the angiosperms. They gave an outstanding system of classification of phanerogams in their Genera Plantarum which was published in three volumes between the years 1862 to 1883. It is a natural system of classification. However, it does not show the evolutionary relationship between different groups of plants, in the strict sense. Nevertheless, it is the most popular system of classification particularly for angiosperms. The popularity comes from the face that very clear key characters have been listed for each of the families. These key characters enable the students of taxonomy to easily identify and assign any angiosperm plant to its family. Bentham and Hooker have grouped advanced, seed bearing plants into a major division called Phanerogamia. This division has been divided into three classes namely: 1. Dicotyledonae 2. Gymnospermae and 3. Monocotyledoneae 84 45 36 3 34 PhanerogamsSummaryor spermatophyta of Benthamare anddivided Hooker'sinto three classificationclasses - Dicotyledonae (1862 – 83), Gymnospermae and Monocotyledonae Class - Dicotyledonae– two cotyledons, open vascular bundles, reticulate venation I. Sub-Class Polypetalae - The flowers are usually with two distinct whorls of perianth; the segments of the inner whorl or "corolla" are free. A. Series-Thalamiflorae -(The calyx consists of usually distinct sepals, which are free from the ovary; doom shaped thalamus). 6 Orders/Cohort; 34 Families or Natural orders -R B. Series – Disciflorae - The calyx consists of either distinct or united sepals, which may be free or adnate to the ovary; a prominent ring of cushion shaped disc is usually present below the ovary, sometimes broken up into glands; the stamens are usually definite in number, inserted upon, or at the outer or inner base of the disc; the ovary is superior. -
Bentham & Hooker's System of Classification
Bentham & Hooker’s system of classification Dr. Devender Singh Meena George Bentham (1800-1884) Sir Joseph Dalton Hooker (1817-1911) © 2020_Dr. Devender Singh Meena Bentham & Hooker’s system of classification • The system of classification of seed plants was proposed by Bentham and Hooker. • It’s the most well developed natural classification system , it was published in 3 volume work Genera plantarum (1862-83). • They described 97,205 species of seed plants belonging to 7,569 genera of 202 families starting from Ranunculaceae up to Gramineae. © 2020_Dr. Devender Singh Meena Bentham & Hooker’s system of classification • The delimitation of genera was based on natural affinities and was pre-Darwinian in concept. • The system divided all the seed plants into three classes -Polypetalae – Dicotyledons (165 families) -Gamopetalae – Gymnosperms (3 families) and -Monochlamydeae – Monocotyledons (34 families). © 2020_Dr. Devender Singh Meena Class 1: Dicotyledons • Seed with 2 cotyledons • Flowers with pentamerous or tetramerous • Reticulate venation © 2020_Dr. Devender Singh Meena Subclass 1: Polypetalae • Polypetalae: sepals and petals distinct, petals free (14 series, 25 orders and 165 families) – Thalamiflorae: flowers hypogynous, stamens many, disc absent • 6 Orders: Ranales, Parietales, Polygalineae, Caryophyllineae, Guttiferales and Malvales – Disciflorae: flowers hypogynous, disc present below the ovary • 4 Orders: Geraniales, Olacales, Celastrales and Sapindales – Calyciflorae: flowers perigynous or epigynous • 5 Orders: Rosales, Myrtales, Passiflorales, Ficoidales and Umbellales © 2020_Dr. Devender Singh Meena Subclass 2: Gamopetalae • Gamopetalae: Sepals and petals distinct, petals fused – Inferae: ovary inferior • 3 orders: Rubiales, Asterales and Campanales – Heteromerae: Ovary superior, stamens in one or two whorls, carpels more than 2 • 3 orders: Ericales, Primulales and Ebenales – Bicarpellatae: Ovary superior, stamens in one whorls, carpels 2 • 4 orders: Gentianales, Polemoniales, Personales and Lamiales © 2020_Dr. -
Part 1. Entomologists and Their Works Before the Biologia Centrali-Americana Acta Zoológica Mexicana (Nueva Serie), Núm
Acta Zoológica Mexicana (nueva serie) ISSN: 0065-1737 [email protected] Instituto de Ecología, A.C. México Papavero, Nelson; Ibáñez Bernal, Sergio Contributions to a History of Mexican Dipterology,- Part 1. Entomologists and their works before the Biologia Centrali-Americana Acta Zoológica Mexicana (nueva serie), núm. 84, 2001, pp. 115-173 Instituto de Ecología, A.C. Xalapa, México Available in: http://www.redalyc.org/articulo.oa?id=57508406 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Acta Zool. Mex. (n.s.) 84 (2001) 10. THE SPECIES DESCRIBED BY CARL EDUARD ADOLPH GERSTAECKER Carl Eduard Adolph Gerstaecker died on July 20, 1895 at Greifswald, at the age of 67. He was educated for the medical profession and took his degree, but devoted himself to zoology, especially to entomology. For many years he was keeper of the entomological department of the Berlin Natural History Museum and also a professor of zoology at the University of Berlin. About the year 1876, differences with the then director of the Berlin Museum induced him to resign his appointment in Berlin, and he subsequently accepted the professorship of Zoology at Greifswald, which he held until his death. Gerstaecker was an industrious and thorough worker in all departments of entomology. Among his principal works may be noted the “Arthropoda” in the “Handbuch der Zoologie” (1863) and the same phylum in Bronn´s “Klassen und Ordnungen der Tierreichs”. -
Bbyct-133 Plant Ecology and Taxonomy Nomenclature and Systems of Classification
BBYCT-133 PLANT ECOLOGY AND Indira Gandhi TAXONOMY National Open University School of Sciences Block 4 NOMENCLATURE AND SYSTEMS OF CLASSIFICATION UNIT 16 Binomial Nomenclature 109 UNIT 17 Scientific Naming of Plants: Nomenclature 120 UNIT 18 System of Classification 141 UNIT 19 Biometrics, Numerical Taxonomy 161 UNIT 20 Cladistics 172 Course Design Committee Prof. A.K. Bhatnagar (Retd.) School of Sciences, Department of Botany, IGNOU University of Delhi, Delhi-110054 Prof. M.S. Nathawat, Director, Dr. A.K. Kavathekar (Retd.) Prof. Vijayshri, Director (Ex.) Sr. Consultant, Prof. Amrita Nigam Department of Botany, Prof. Jaswant Sokhi Sri Venkateswara College, University of Delhi, New Delhi-110001 Block Preparation Team Prof. Amrita Nigam Dr. A.K. Kavathekar (Retd.) School of Sciences, IGNOU Sr. Consultant Department of Botany Prof. Jaswant Sokhi Sri Venkateswara College, School of Sciences, IGNOU University of Delhi, Dr. E. Chauhan (Unit-20) New Delhi-110001 Sr. Consultant Department of Botany Deshbandhu College, University of Delhi, New Delhi-110019 Course Coordinators: Prof. Amrita Nigam and Prof. Jaswant Sokhi Production Mr. Sunil Kumar AR(P), SOS, IGNOU Acknowledgements: Dr. Eklavya Chauhan for giving useful inputs. Sh. Manoj Kumar, Assistant for word processing and CRC preparation. Mr. Ajit Kumar for diagrams. November, 2019 Indira Gandhi National Open University, 2019 ISBN: All rights reserved. No part of this work may be reproduced in any form, by mimeograph or any other means, without permission in writing from Indira Gandhi National Open University. Further information on Indira Gandhi National Open University courses may be obtained from the University’s office at MaidanGarhi, New Delhi-110 068 or IGNOU website www.ignou.ac.in. -
Bibliographia Linnaeana. Verzeichniss Der Schriften Karl Von Linné's
Wilhelm Junk Yerzeichniss der Schriften Karl von Linne’s. W. Junk Berlin 1902. liathenower Str. 22. ZZ. «50% . SS. 2-— tOi. I C. a Linnß. (* 13. Mai 1707, 1 10. Januar 1778). l Systema Naturae. (Editio I.) Lugduni Batav., apudTh. Haak, 1735. 14 paginae in folio-max. M. 90.— 14 unbezeichnete Seiten, von denen eine leer ist. Das 2. Blatt, das mancben Exemplaren fehlt, ist später erschienen, hat unten: Lugduni Batav. ap. A. Sylvium 1736. und enthält ein Schema. Ist von II. Friedländer & Sohn auf chemischem Wege zusammen mit dem Blatt: Methodus juxta quam Physiologus etc. und mit dem Bervic’schen Portrait von Linne (von 1779) in einer kleinen Zahl von Exemplaren (zu M. 15) vervielfältigt worden. Jetzt ebenfalls vergriffen. — Auch A. L. Fee hat diese Editio princeps u. d. T.: „Editio prima perrara reimpressa est curis ill. F6e“, bei Levrault in Paris im J. 1830 in einer Oktav-Ausgabe auf VI u. 81 Seiten neu gedruckt. Preis M. 5. Linne selbst sagt von dieser Ausgabe: Conspectus tantum operis et quasi mappa geographica. Brun et 1862. tres rare, 23 ä 39 fr.! 2. — Editio TI., auctior. Stockholmiae, Gr. Kiesewetter, 1740. 80 paginae in Octavo. M. 15.— Linne: In hac editione emendavi inulta, addidi plurima in omni naturae regoo, praesertim vero species quadrupedum et nomina Suecana animalium. 3. — Editio III. Latine et Germanice per J. J. Lange. Halae, Gebauer, 1740. (8 et) 70 paginae in Octavo. M. 4.— Identisch mit ed. II; nur die deutschen Namen hinzugefügt. -4r - Editio IV., ab auctore emendata et aucta, per B. Jussieu. Accesserunt nomina Galliea. -
Carl Linnaeus: a Timeline James P
Humboldt State University Digital Commons @ Humboldt State University Botanical Studies Open Educational Resources and Data 2018 Carl Linnaeus: A timeline James P. Smith Jr Humboldt State University, [email protected] Follow this and additional works at: https://digitalcommons.humboldt.edu/botany_jps Part of the Botany Commons Recommended Citation Smith, James P. Jr, "Carl Linnaeus: A timeline" (2018). Botanical Studies. 83. https://digitalcommons.humboldt.edu/botany_jps/83 This Plant Taxonomy - Systematic Botany is brought to you for free and open access by the Open Educational Resources and Data at Digital Commons @ Humboldt State University. It has been accepted for inclusion in Botanical Studies by an authorized administrator of Digital Commons @ Humboldt State University. For more information, please contact [email protected]. C A R L L I N N A E U S : A T I M E L I N E James P. Smith, Jr. Professor Emeritus of Botany Department of Biological Sciences Humboldt State University 22 June 2017 PART I — HIS LIFE 1707 Born in the village of Råshult in southern Sweden (23 May) 1709 Family moves to Stenbrohult where his father is appointed vicar and establishes a garden 1716 Attends Latin school – studies Latin, religion, and science 1727 Arrives in Lund to study medicine 1728 Moves to Uppsala and continues his studies 1729 Meets Olof Celsius, Professor of Theology and botanist 1730 Offers very popular demonstrations in the botanical garden 1730 Appointed Lecturer in Botany at the University of Uppsala 1732 Collecting trip to Lapland for the Royal Academy of Sciences (12 May - 10 October) 1734 Collecting trip to Dalarna in central Sweden 1735 Receives M.