摘要:

SummaryThis paper is intended to develop a framework for a more extensive study of the role of the German journalFlorain the development of systematic botany in the nineteenth century. In the first part of the paper, short biographies are given of the editors in the period 1818–1888, with a special section about their relation withFlora.D.H. Hoppe (1760–1846) was editor, and actually publisher as well, from 1818–1842. F.G. Eschweiler (1796–1831) assisted Hoppe as co‐editor from 1827–1829. In 1830 A.E. Fürnrohr (1804–1861) became co‐editor. Fürnrohr succeeded Hoppe as editor in 1843 and served as such until 1861. Like Hoppe, Fürnrohr was actually publisher ofFloraas well. After Fürnrohr's sudden death, the zoologist G.A.W. Herrich‐Schäffer (1799–1874) took over the editorship. He was succeeded in 1871 by J. Singer (1834–1901). From its very beginningFlorawas published actually or nominally in Regensburg by theRegensburgische Botanische Gesellschaft.The relationship between the journal and the Society came to an end in 1888, when Singer transferred the editorship to K.I.E. von Goebel, who from that date published the journal in Marburg.

ISSN:0040-0262    

DOI:10.2307/1220138

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryA formal infrageneric classification for the genusHelianthusis presented. The classification was derived using phenetic, cladistic and biosystematic procedures. The 49 species ofHelianthusare placed into four sections and seven series.

ISSN:0040-0262    

DOI:10.2307/1220139

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryIn this research we have demonstrated that the storage proteins, Aquilegilin and Tubiflorin, occur in nearly all taxa of the Magnoliophytina (angiosperm) families tested. Jensen and Penner (1980) have reported the value of comparing partially purified seed storage proteins extracted for plant taxonomic research. Büttner and Jensen (1981) established the homology of seed storage proteins isolated fromAquilegia vulgarisandDigitalis purpurea.The different amounts of serological reactivity detected among various plant taxa have been interpreted as being a reflection of evolutionary differences in the primary structure of the protein. While the serological differences were great between taxa of different families, taxa of different genera within each family usually were distinguishable only when the reference systems (antisystems) had been obtained from the same family. However, proteins obtained from species within a single genus were difficult to distinguish. The serological experiments comparing the proteins from different Magnoliophytina (angiosperm) families (Fig. 4), generally reflect the relationships of the tested families with the Ranunculaceae and the Scrophulariaceae as reference families.ZusammenfassungWährend Jensen and Penner (1980) bereits den vergleichenden Einsatz von isolierten Samen‐Reserveproteinen in der Verwandtschaftsforschung als sinnvoll erkannt hatten, konnten Büttner and Jensen (1981) auf die Homologie von inAquilegia vulgarisundDigitalis purpurea‐ Samen enthaltenen Reserveproteinen hinweisen. Jetzt zeigte sich, daß die Reserveproteine Aquilegilin und Tubiflorin in den Vertretern fast aller getesteter Angiospermenfamilien vorkommen. Ihre abgestufte serologische Reaktivität deutet auf evolutive Veränderungen der Primärstruktur hin. Während die serologischen Unterschiede bei Vertretern verschiedener Familien beträchtlich sind, sind Vertreter verschiedener Gattungen einer Familie oft nur mit Hilfe von Bezugssystemen (Antisystemen) aus dieser Familie differenzierbar. Die benutzten Reserveproteine aus Arten einer Gattung schließlich sind nur schwer unterscheidbar. Die serologischen Vergleiche der beiden Proteine aus einer Reihe von Angiospermenfamilien führten zu einem Bild (Fig. 4), das die abgestuften Verwandtschaftsverhältnisse in Bezug auf die Ranunculaceen und Scrophulariaceen im allgemeinen widerspiegelt.

ISSN:0040-0262    

DOI:10.2307/1220140

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryThirty‐one species ofAlyxiafrom New Caledonia were analysed for their manganese content. Most of the species showed excessive uptake of manganese with a maximum of 1.15% Mn in dried leaves of A.rubricaulis.The manganese content alone was sufficient to distinguish a number of species from each other. Composite samples were in addition analysed for calcium, magnesium, potassium and sodium. Correlation analysis and calculation of the slopes of regression lines showed that manganese uptake was mainly at the expense of calcium, rather than magnesium. Similarly magnesium was preferred to potassium and potassium to sodium. It is possible that manganese may have some physiological role inAlyxia, compensating to some extent for reduced uptake of the nutrients calcium and potassium.

ISSN:0040-0262    

DOI:10.2307/1220141

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryAn automated taxonomic data bank for grass genera is described, and an example of an automatically typeset generic description is presented. There are 324 generic descriptions currently available, coded in DELTA format. These are provided on microfiche, translated into English by CONFOR, along with a sample key to eu‐panicoids generated by the program KEY.

ISSN:0040-0262    

DOI:10.2307/1220142

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryAbout twelve species ofLupinusare centered in the Mediterranean and North African parts of the Old World. They show limited morphologocal polymorphism, but they are diverse in other ways. The group as a whole features three unique characteristics of evolutionary significance: (a) a special geographical distribution, disjunct from the main center in America, with allopatric rough‐seeded and partially sympatric smooth‐seeded species; (b) karyotype polymorphism, with at least seven different chromosome numbers, none of which has been encountered in the New World; (c) systematic disassociation, by which most species are taxonomically unrelated and genetically isolated.This cyto‐geographical complex pattern and systematic divergence are best understood on the assumption that a few lupines of various origins migrated by means of long‐range dispersal from their primary center in North America during the Neogene. The migrations were repeated quite haphazardly.Rough‐seeded migrules were established in NW Africa, while smooth‐seeded ones arrived at the Mediterranean, probably later on.During the Miocene lupine populations spread and diverged along the Mediterranean and in Africa north of the equator, succeeding the Tethyan flora.Their present eco‐geographical distribution is the outcome of both climatic and edaphic changes during the Quaternary, combined with the impact of human activities from the Pleistocene on. Whereas the evolution ofLupinusin the New World has been enhanced by processes such as ecological differentiation and intensive hybridization, that of the Old World lupines has been inhibited owing to rapidly increasing aridity and civilization. The main changes in the gene pool of wild populations could be caused by disruptive differentiation, i.e., occasional hybridization and subsequent intergradations with escaped or neglected, sporadically domesticated strains.

ISSN:0040-0262    

DOI:10.2307/1220143

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryA historical perspective reviews the origins of plant taxonomy and its relationship with plant fossils. Linnaeus contributed the notion of binomial nomenclature with the sole purpose of providing a label for the species. Subjective attributes such as stratigraphic occurrence or presumed phylogenetic relationship have no place in taxonomic circumscription. Names of taxa are stabilized by nomenclatural types, to which the name is permanently attached.Nomenclature and taxonomy are entirely different concepts. The I.C.B.N, provides Rules for stabilizing the nomenclature, and strict adherence to these is beneficial to all palynologists. Their judgement on how to best group and subdivide their material may vary; proper nomenclatural procedures will allow later workers to re‐arrange these data without confusion.Practical problems of spore systematics result from imperfect knowledge and understanding. Virtually identical problems are faced by palaeobotanists working with named parts of plants, by mycologists or phycologists working with named stages in life cycles, and even by neobotanists working with incomplete herbarium specimens. There are no reasons for palynologists to aim for nomenclatural procedures different from those of other plant taxonomists. Recent suggestions by Boulter and Pirozynski and proposals by Hughes to change the I.C.B.N, so as to give special consideration to special groups of fossils are ill considered and here rejected.

ISSN:0040-0262    

DOI:10.2307/1220144

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryArticle 10.1 of the ICBN is discussed in reference to the typification of the generic namesDiamorphaNuttall (Crassulaceae),LeucaenaBenth. (Leguminosae),OdontonemaNees (Acanthaceae),PicrodendronPlanchon (Euphorbiaceae), andPseudolarixGordon (Pinaceae). It is argued that the nomenclatural type of each of these genera is the species described by their respective authors and not the binomial cited in each case in which the genus was thought to be monotypic when described or, in the case ofLeucaena, its lectotype is the first species chosen in spite of its alleged binomial belonging to another genus.

ISSN:0040-0262    

DOI:10.2307/1220145

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryThe recently published Report of the Committee on Generic Typification did not deal adequately with the case for abandoning that part of Art. 10 of the Code that reads “the type of the name of a genus … is a species” nor did it provide examples of the effect of its various Proposals to amend the Code. This paper attempts to deal with this inadequacy and meet this omission.

ISSN:0040-0262    

DOI:10.2307/1220146

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

AbstractThe arguments are presented concluding that the namesLupinus hilarianusBenth. andCytisus heptaphyllusVelloso were applied to very different material and certainly do not belong to the same species. It is concluded thatC. heptaphyllusdoes not belong in the genusLupinus.It is questionable whether the name fits any of the species currently known for allied genera. Article 63 prohibits the use ofL. hilarianus, so the next name published which applies to specimens of the species involved,Lupinus gibertianusC. P. Smith, must be accepted.

ISSN:0040-0262    

DOI:10.2307/1220147

出版商:Wiley    

年代:2019

数据来源: WILEY