摘要:

SummaryFay, M. F.&Chase, M. W.: Resurrection ofThemidaceaefor theBrodiaeaalliance, and recircumscription ofAlliaceae, AmaryllidaceaeandAgapanthoideae.– Taxon 45: 441‐451. 1996. – ISSN 0040‐0262.The familyThemidaceaeSalisb. is resurrected and recircumscribed. It consists of C. 10 genera of cormous plants principally from western N. America (British Columbia to northern Guatemala). These had been included inAlliaceae, as tribeBrodiaeeae(subfamilyAllioideae), but recent molecular and anatomical studies indicate that the group merits familial status.Petronympheis not a member of this group but rather belongs inAnthericaceae. Agapanthusis misplaced inAlliaceaeand, despite its superior ovary, should be considered a member ofAmaryllidaceae, as subfamilyAgapanthoideae. Alliaceae, Amaryllidaceae, andAgapanthoideaeare recircumscribed, andTulbaghieaeraised to subfamilial status.

ISSN:0040-0262    

DOI:10.2307/1224136

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryVegetti, A. C.&Weberling, F.: The structure of the paracladial zone inPoaceae.– Taxon 45: 453‐460. 1996. – ISSN 0040‐0262.Terms are proposed to designate different subzones and regions within the paracladial zone of the inflorescence, in thePoaceae.In some taxa the inflorescence is composed of short paracladia only. In others the main axis bears short paracladia in the distal region and long paracladia in the proximal region, so that two subzones can be distinguished. In general the inflorescences of grasses lack bracts other than those belonging to the spikelets. In theAndropogoneae, however, some inflorescences have long paracladia that lack bracts and prophylls but others have long paracladia with well developed bracts and prophylls. The former are designated as “long paracladia without trophotagma”, and the latter as “long paracladia with trophotagma”.

ISSN:0040-0262    

DOI:10.2307/1224137

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryViljoen, A. M., Van Wyk, B‐E., Van der Bank, H., Smith, G. F.&Van der Bank, M.: A chemotaxonomic and biochemical evaluation of the identity ofAloe candelabrum (Aloaceae). – Taxon 45: 461‐471. 1996. – ISSN 0040‐0262.In situ morphological analysis of plants from the entire distribution area supports the assumption thatAloe candelabrum, by its reproductive and vegetative characters, falls well within the taxonomic concept ofA. ferox.The identical chemical composition of leaf exudate with regard to secondary compounds (chromone and anthrone derivatives) supports this conclusion. Gene products at 23 enzyme‐coding loci, analyzed by horizontal starch gel‐electrophoresis, revealed no fixed allele differences betweenA. candelabrumandA. ferox.The differences on which the two species were previously separated can be explained as local variation within a single and widespread taxon.A. candelabrumshould therefore be subsumed underA. ferox.

ISSN:0040-0262    

DOI:10.2307/1224138

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryPesacreta, T. C.&Stuessy, T. F.: Autofluorescent walls of connective bases in anthers ofBarnadesioideae (Asteraceae), and systematic implications. – Taxon 45: 473‐485 1996 – ISSN 0040‐0262.Stamens from 20 species of the subfamilyBarnadesioideaewere examined with confocal scanning laser microscopy to determine some of the characteristics of the connective base epidermis. All species had autofluorescent cell walls. Wall autofluorescence was more intense in the abaxial connective epidermis than in the filament epidermis. In most species all autofluorescent cell walls were evenly thickened, but in several species ofBarnadesiasome either had spiral thickenings or were irregularly thickened, perhaps an adaptation for increased strength in longer filaments and anthers as part of a hummingbird pollination syndrome, a derived condition within the subfamily. In slightly less than half the species the connective base exhibited a more intense autofluorescence than any other region of the connective. The adaxial epidermis was autofluorescent in eight species. The occurrence of autofluorescent cells in bothCalyceraceaeandBarnadesioideaesuggests this as a possible synapomorphy, but in the former the cells are tangentially elongate and irregular, rather than longitudinally elongate with rectangular outline.

ISSN:0040-0262    

DOI:10.2307/1224139

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummarySoejarto, D. D., Delprete, P., Regalado, J. C.&Madulid, D. A.: The true provenance and identity ofBadusa philippica (Rubiaceae). – Taxon 45: 487‐492. 1996. – ISSN 0040‐0262.As a corollary to the recollection ofBadusa palawanensisin its locus classicus in southern Palawan (Philippines), typification and taxonomic status ofB. philippicaare discussed. What has been considered a doubtful species of questionable Philippine origin becomes a straightforward synonym ofB. corymbiferaoriginating (as does the latter) from Tonga.

ISSN:0040-0262    

DOI:10.2307/1224140

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummarySchmit, V., Debouck, D. G.&Baudoin, J. P.: Biogeographical and molecular observations onPhaseolus glabellus (Fabaceae, Phaseolinae)and its taxonomic status. – Taxon 45: 493‐501. 1996. – ISSN 0040‐0262.The wild, red‐floweredPhaseolus glabellusis generally considered either as a species of theP. coccineuscomplex or as a subspecies ofP. coccineus.Biogeographic considerations as well as experimental hybridization, seed storage protein electrophoresis and cpDNA polymorphism point at its isolated taxonomic position and distinctness fromP. coccineus.The position ofP. glabellusinPhaseolusand its relationships with the remaining taxa of theP. coccineuscomplex are discussed.

ISSN:0040-0262    

DOI:10.2307/1224141

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryWhittemore, A. T.: A simple method for computerizing taxonomic treatments. – Taxon 45: 503‐511. 1996. – ISSN 0040‐0262.Standard taxonomic treatments are very well adapted to computerization. A method is presented for producing taxonomic treatments using standard commercial software (spreadsheets and word processors). The data from morphological descriptions and other elements of the treatments are stored in the spreadsheet with taxa as rows and characters as columns, and the descriptions are generated using a print merge routine, available in most word processors. Departures from parallelism necessitated by structural differences between taxa or by missing data are easily accommodated using conditional statements in the print merge. Examples are given to illustrate the approach. Treatments prepared in this way are easy to edit for parallelism and internal consistency, and format changes can be entered once for incorporation throughout the treatment. This approach can be used to produce taxonomic treatments in an easily editable form, or as a framework for developing a data structure for use in a database or specialized taxonomy program.

ISSN:0040-0262    

DOI:10.2307/1224142

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryHjertson, M.&Eggli, U.: The publication date ofKaktus‐ABC.– Taxon 45: 513‐514. 1996 – ISSN 0040‐0262.Correspondence from the publisher shows that the actual publication date of Backeberg&Knuth'sKaktus‐ABCis 12 Feb 1936, not 31 Dec 1935 as stated in the book.

ISSN:0040-0262    

DOI:10.2307/1224143

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryBuys, M. H.&Van der Walt, J. J. A.: Lectotypification of the names of LinnaeanEchiumspecies now inLobostemon (Boraginaceae). – Taxon 45: 515‐517. 1996. – ISSN 0040‐0262.Lectotypes are designated for three Linnaean names:Echium capitatum, E. fruticosum, andE. laevigatum.Thereby the third becomes a synonym of the second.

ISSN:0040-0262    

DOI:10.2307/1224144

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryOrtiz, S.&Rodríguez‐Oubiña, J.: The identity ofDicoma bangueolensis (Asteraceae). – Taxon 45: 519‐520. 1996. – ISSN 0040‐0262.Dicoma bangueolensis, lectotypified here, is a common species of Somalia, not of Tanzania as fraudulently claimed by Muschler in the protologue.

ISSN:0040-0262    

DOI:10.2307/1224145

出版商:Wiley    

年代:2019

数据来源: WILEY