摘要:

SummaryHesperophycus harveyanus(Decaisne) Setchell&Gardner (Fucaceae, Phaeophyceae), the type and only known species of its genus, is representative ofFucusL., not ofHesperophycusas described by Setchell and Gardner.Hesperophycusis therefore proposed for conservation withGardner 1842, on which the generic description was based, as type. The species is redescribed asH. californicusP. C. Silva. It ranges from Santa Cruz, California, to Punta Eugenia, Baja California, but is scarce on the southern California mainland. It occurs on all of the Channel Islands of southern California, but is especially abundant on Santa Catalina and Santa Cruz islands, where it forms an extensive belt in the upper intertidal zone, abovePelvetia.

ISSN:0040-0262    

DOI:10.2307/1223175

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryA revised computer system for generating international registries of cultivars is described. The system implements INGRES (Relational Technologies Inc.) a powerful relational database management system package. It is fully integrated from all aspects, including data input and report generation. The user may customize his own reports if desired. The system allows for the incorporation of information on gene transfer from remote taxa in cultivar generation and thus is capable of documenting various biotechnological methods in modern breeding approaches.

ISSN:0040-0262    

DOI:10.2307/1223176

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryA comparative survey of several historical classifications of Annonaceae down to the subtribal level is given. The role of various key characters is briefly discussed. The present paper at the same time may be considered as an introductory paper to forthcoming publications of general studies on flower and fruit characters now being conducted at Utrecht.

ISSN:0040-0262    

DOI:10.2307/1223177

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryForty‐three vascular plant specimens were found recently at the National Herbarium of Canada that were collected by Sir Joseph Banks on his voyage to Newfoundland and Labrador in 1766. A list of these specimens is presented together with a discussion of the relationship that they bear to collections at the British Museum (Natural History) in London as well as information contained in Banks's personal diary and plant catalogue.

ISSN:0040-0262    

DOI:10.2307/1223178

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryHagström's concepts of relationships inPotamogeton, as reflected by the subgeneric, sectional, and subsectional divisions in his classification of the genus are investigated by reconstruction of an evolutionary “tree” deduced from phylogenetic inferences stated in his monograph. These relationships are explored in the context of results from phenetic and cladistic numerical analyses performed using characters taken from the Hagström monograph that are scored for 26 subsections. The Hagström classification represents an amalgam of phenetic and cladistic interpretations and the hierarchy does not depict accurately fundamental evolutionary relationships indicated by numerical analyses. Recommendations are provided for developing and testing evolutionary hypotheses that are independent of relationships inferred by this long‐standing but problematic classification.

ISSN:0040-0262    

DOI:10.2307/1223179

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryStrong correlations are demonstrated in 74 species ofEragrostis, involving microhair morphology (‘chloridoid’ and ‘panicoid‘) types, PCR (photosynthetic carbon reduction) sheath anatomy, and modes of spikelet disarticulation. The observations seem significant in relation to infrageneric classification.

ISSN:0040-0262    

DOI:10.2307/1223180

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1223181

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.1002/j.1996-8175.1990.tb01028.x

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1223193

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryLectotype specimens are designated for the brown alga,Sargassum filipendulaC. Agardh var.filipendula, and two of its varieties,S. filipendulavar.laxumJ. Agardh andS. filipendulavar.contractumJ. Agardh.

ISSN:0040-0262    

DOI:10.2307/1223194

出版商:Wiley    

年代:2019

数据来源: WILEY