摘要:

SummaryPapaver setigerumDC. populations from Mediterranean France and Campania, southern Italy, have been studied morphologically and phytochemically.Papaver setigerum, whose circumscription is reported to be substantially the same asP. somniferumL., revealed to be a species morphologically distinct from the latter. Morphine, codeine, and thebaine, the major alkaloids ofP. somniferum, are lacking in capsules ofP. setigerum.Their absence supports also at the chemotaxonomical level thatP. setigerumis a distinct species fromP. somniferum.

ISSN:0040-0262    

DOI:10.2307/1221777

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryThis study examines whether a satisfactory classification can be obtained from phenetic clustering of herbarium specimens based on vegetative characters alone. Twelve leaf and twig characters of 731 specimens in 13 taxa within the genusPopulusL. were subjected to standard numerical phenetic techniques. A classification based on character means for each taxon corresponded well to the established classification. Another classification based on 68 individual specimens, while showing considerable phenetic affinities of putatively related individuals, yielded an overall unsatisfactory classification. Some sections of the genus were easier to delimit by vegetative characters than others.

ISSN:0040-0262    

DOI:10.2307/1221778

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryThe pollen ofBursera tecomaca(DC.) Standl. and ofB. sarcopodaP. G. Wilson notably differs from that of remaining species ofBursera, but shows a striking similarity to the pollen of the akin genusCommiphora, mainly distributed in Africa. Additional morphological characters of these two species suggest also their better placement inCommiphoraand therefore the formal transfer is proposed.

ISSN:0040-0262    

DOI:10.2307/1221779

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryA search of 24 herbaria for material relevant to the typification of 9 oak (Quercus) names published by S. B. Buckley (1809–1884) produced little authentic material. We therefore designate lectotypes for three names,Q. annulata, Q. mohrianaandQ. vaseyana, and neotypes for four names,Q. durandii, Q. san‐sabeana, Q. shumardiiandQ. texana.Two names,Q. durandiivar.san sabia(sic) andQ. rubravar.texana, proposed by Buckley were new combinations and are typified by their basionyms.Quercus texanaBuckley, as originally described, appears to be conspecific withQ. nuttalliiPalmer of eastern Texas, Louisiana, and Arkansas and has priority over the latter name. The nameQ. texanahas been consistently misapplied, by its author and others, to a species of oak that occurs in central Texas and southeastern Oklahoma. This oak has no valid name and is therefore described as new,Quercus buckleyiNixon and Dorr. Historical information concerning Buckley's collecting activities, especially as they pertain to his new species of oak, is also provided.

ISSN:0040-0262    

DOI:10.2307/1221780

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1221781

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryThe genusDilseaStackhouse (1809, p. 55) currently contains two species,D. carnosa(Schmidel) Kuntze (1898, p. 404) andD. californica(J. Agardh) Kuntze (1891, p. 892); the genusNeodilseaTokida (1943, p. 96) encompasses six species,N. americanaAbbott (1968, p. 187),N. crispataMasuda (1973a, p. 37),N. integra(Kjellman) Zinova (1961, p. 84),N. natashaeLindstrom (1984, p. 29),N. tenuipesYamada et Mikami in Mikami (1954, p. 83), andN. yendoanaTokida (1943, p. 96). Masuda (1973b, p. 468) describedN. integravar.longissima, and Abbott (1982, p. 301) made the combinationN. araneosaforAbbotia araneosaPerestenko (1975, p. 1686). I discuss the use of the nameDilsea carnosarather thanD. edulis(Stackhouse) Stackhouse (1809, p. 55) and argue for the reinstatement ofNeodilsea integrainDilseaasD. integra(Kjellman) Rosenvinge (1898, p. 19).Neodilsea longissima(Masuda) comb. nov. is proposed forN. integravar.longissima, andN. borealis(Abbott) comb. nov. is proposed forSchizymenia borealis, an earlier name forN. americana. Neodilsea araneosais removed from the Dumontiaceae to the Cryptonemiaceae; its correct name isNeoabbottiella araneosa(Perestenko) comb. nov. Lectotypes are designated forD. integra(asKallymenia?integra),N. borealis(asSchizymenia borealis), andN. yendoana.

ISSN:0040-0262    

DOI:10.2307/1221782

出版商:Wiley    

年代:2019

数据来源: WILEY

摘要:

SummaryThe techniques proposed inTaxon32, 4: 616–617 for preparing Riccias for herbarium study seem inadequate. The author says what we must do and what we must not do to keep Riccias in good conditions on account of their biology, of the specific value of some morphological characters and the possible studies at the present time and in the future.

ISSN:0040-0262    

DOI:10.2307/1221783

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1221784

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1221785

出版商:Wiley    

年代:2019

数据来源: WILEY

ISSN:0040-0262    

DOI:10.2307/1221786

出版商:Wiley    

年代:2019

数据来源: WILEY