摘要:

SummaryProblems in the use of electronic data processing (EDP) in biological collections are explored. To accomplish this, the uses of EDP, actual and potential, are first set forth. The uses are divided into three groups, depending on the source from which the relevant information is obtained. The problems themselves are then grouped into nine mutually exclusive categories. Each problem is discussed in detail. The concept of a decision context is introduced. Its use in making the overall decision as to whether or not EDP should be used in a particular situation is explained. A questionnaire on the problems of EDP in biological collections was returned by 22 curators. Their comments are incorporated into the appropriate places of the text.

ISSN:0040-0262    

DOI:10.2307/1216951

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryJohn Hill'sThe British Herbalwas published in 52 parts between 24 January 1756 and 28 January 1757. Each part normally consisted of two sheets (8 pages) and three plates or of three sheets (12 pages) and two plates. A detailed list of contents of the parts and of the precise dates of publication is given, based on announcements in a London daily newspaper, thePublic Advertiser.Hill's nomenclature and taxonomy, and especially the status of his names under the International Code of Botanical Nomenclature, are briefly discussed.

ISSN:0040-0262    

DOI:10.2307/1216952

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryA phylogenetic evaluation of the genusMonardais presented, based upon biological divergence including anatomical, chemical, cytological and morphological characters. The evaluation is patterned after the “Wagner Divergence Index” which is based on two main assumptions: first, since there is no logically tenable way of measuring objectively the value of various characters, they are treated as of equal value; second, any character that occurs in most taxa of a given group is probably the norm and therefore unspecialized; a character appearing only in a few of the taxa of a group is considered to be specialized. Of 118 classical taxonomic characters found in the genus Monarda, only 31 were considered to have recognizable evolutionary tendencies, and of 26 chemical oil constituents only 9 were judged to have evolutionary significance.

ISSN:0040-0262    

DOI:10.2307/1216953

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

ResuméL'examen microscopique du plan ligneux secondaire des Légumineuses actuelles des espècesd'Afzeliaet d'Intsiaet plus spécialement la présence ou l'absence de véritables fibres septées dans leur bois, ont des conséquences importantes sur la systématique des bois fossiles correspondants. Les auteurs donnent une révision des bois de Légumineuses rangés dans le genrePahudioxylonChowdhury, Ghosh et Kazmi, 1960.

ISSN:0040-0262    

DOI:10.2307/1216954

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryCaldesiellaSacc. is placed in synonymy withTomentellaPat.nom. cons.on the basis of past and recently acquired evidence. Three new combinations are proposed,Tomentella crinalis(Fries) M. J. Larsen (=Caldesiella ferruginosa(Fries) Sacc.),Tomentella calcicola(Bourd.&Galz.) M. J. Larsen, andTomentella italica(Sacc.) M. J. Larsen.

ISSN:0040-0262    

DOI:10.2307/1216955

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1216956

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1216957

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1216958

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.1002/j.1996-8175.1967.tb02130.x

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.1002/j.1996-8175.1967.tb02131.x

出版商:Wiley    

年代:2019

数据来源: WILEY