Chromosome Numbers and Generic Relationships in Subtribe Stephanomeriinae (Compositae: Cichorieae)
Autor: | A. Spencer Tomb |
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Rok vydání: | 1974 |
Předmět: | |
Zdroj: | Brittonia. 26:203 |
ISSN: | 0007-196X |
DOI: | 10.2307/2805888 |
Popis: | Chromosome numbers are reported from over 230 populations representing species in eight genera. First counts are reported for three species ofStephanomeria, five species ofLygodesmia, and one species ofPinaropappus. Base chromosome numbers,x = 6, 7, 8, and 9 are known in the subtribe;x = 9 is found in six of the 12 genera and presumably is the ancestral base number for the subtribe. Two phyletic lines, aMalacothrix line and aStephanomeria line are recognized on morphological grounds. A key to the 12 genera is provided. |
Databáze: | OpenAIRE |
Externí odkaz: |
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