Zur Skulptur der Pollen-Exine bei drei Centrospermen (Gisekia,Limeum, Hectorella), bei Gyrostemonaceen und Rhabdodendraceen |
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| Authors: | H -Dietmar Behnke |
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| Institution: | (1) Lehrstuhl für Zellenlehre, Universität Heidelberg, Im Neuenheimer Feld 230, D-6900 Heidelberg, Bundesrepublik Deutschland |
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| Abstract: | The exine-sculpturing of pollen fromGisekia africana (Gisekiaceae),Limeum argute-carinatum (Molluginaceae) andHectorella caespitosa (Hectorellaceae) with supratectate spinulae and an anulopunctate tectum is in accordance with the manyCentrospermae investigated so far with the SEM. Pollen ofRhabdodendron macrophyllum and three species fromGyrostemonaceae do not exhibit these surface details. WhileRhabdodendron with a finely reticulate exine probably fits intoRutaceae, the unique columellaless exine ofGyrostemonaceae has no direct counterpart, neither inCentrospermae nor inCapparales, the two orders to which this family was allied. The genera ofGyrostemonaceae can be distinguished by different arrangements of minute pollen surface details.
Zur Skulptur der Pollen-Exine bei drei Centrospermen (Gisekia, Limeum, Hectorella), bei Gyrostemonaceen und Rhabdodendraceen |
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| Keywords: | Centrospermae Gyrostemonaceae Rhabdodendron Pollenexine sculpturing ultrastructure and systematics |
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