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  • Asteraceae  (1)
  • Capparales  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Infloreszenz- und Blütenentwicklung bei der KugeldistelEchinops exaltatus (Asteraceae) (1979)
    Springer
    Plant systematics and evolution 132 (1979), S. 189-204 
    Details
    ISSN: 1615-6110
    Keywords: Asteraceae ; Echinops ; Developmental morphology ; inflorescence and flower ontogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract InEchinops the flowers are surrounded by several scales and initiated in an acropetal and spiral succession on a cone-like inflorescence axis (Figs. 1–6). The floral organs originate in the following sequence: petals—stamens—carpels—pappus. The petals arise from a meristematic rim and therefore are already interconnected when they arise as primordia. This sympetalous zone remains rather inconspicuous for a long period, but eventually, the elongated corolla tube is formed through intercalary growth in a ring zone. Thereby, the stamens are moved upwards and form ledges on the corolla tube (Fig. 34). In the inferior ovary the usual zones of the typical angiospermous gynoecium can be distinguished, namely a “synascidiate”, “symplicate” and “hemisymplicate” zone. The ovule is borne on carpellary tissue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990465
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on the early floral development inCleomoideae (Capparaceae) with emphasis on the androecial development (1997)
    Springer
    Plant systematics and evolution 206 (1997), S. 119-132 
    Details
    ISSN: 1615-6110
    Keywords: Capparales ; Capparaceae ; Cleome ; Polanisia ; Floral development ; androecial patterns
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Floral ontogeny ofCleome spinosa, Cleome violacea andPolanisia dodecandra subsp.trachysperma was studied in the context of the question whether the fascicled androecium ofReseda andCapparis (with fused fascicles) or the 2 + 4-pattern of theBrassicaceae is primitive in theCapparales. InPolanisia dodecandra, the 9–18 stamens show unidirectional initiation from the adaxial side toward the abaxial side of the flower. InCleome violacea, the six stamens also are formed in an unidirectional order, but development starts abaxially and a zigzag-like pattern is superimposed. InCleome spinosa, two stamen primordia in transversal (lateral) position are followed by four stamens which arise on a somewhat higher level in two pairs in front of the median sepals. It is assumed that the evolutionary steps in the androecial development proceed fromReseda viaCapparis andPolanisia/Cleome toBrassicaceae. This interpretation is supported byrbcL-studies (Chase & al. 1993,Rodman & al. 1993).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987944
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    Paper (German National Licenses)
    Fulltext
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