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Kochia
Article . 2007 . Peer-reviewed
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Zwergformen bei Brombeeren (Rubus L. subgen. Rubus)

Authors: Weber, Heinrich E.;

Zwergformen bei Brombeeren (Rubus L. subgen. Rubus)

Abstract

Der Beitrag behandelt die in Europa nachgewiesenen Zwergformen der Gattung Rubus L. Sechzehn Arten (alle nur Sekt. Rubus) bilden solche offensichtlich genetisch fixierten Abwandlungen aus, die als Varietäten der betreffenden Arten eingestuft werden. Neu beschrieben werden R. marssonianus H. E. Weber var. pusillus H. E. Weber, R. muenteri T. Marss. var. pusillus H. E. Weber und R. senticosus Köhler ex Weihe var. pusillus H. E. Weber & Kiesewetter. Einen status novus erhalten R. gracilis J. & C. Presl var. parvulus (Hülsen) H. E. Weber, R. pyramidalis Kalt. var. parvifolius (K. Frid. & Gelert) H. E. Weber und R. silvaticus Weihe & Nees var. microphyllus (K. Frid. ex Erichsen) H. E. Weber. – Zwergformen sind meist etwa nur halb so groß wie die Normalform und weisen weitere charakteristische Merkmale auf. Ihre Häufigkeit nimmt von Norden nach Süden ab. Die meisten Zwergformen wachsen in Dänemark (13), es folgen Norddeutschland (9) und Mitteleuropa bis zur Donau (4). Weiter südlich und in Südeuropa fehlen sie. Von den Britischen Inseln sind vier Zwergformen bekannt.

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Germany
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ddc: ddc:580

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green
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