Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae
Background – Vegetative and fruit characters of the Amazonian genus Dialypetalanthus point to a position in Rubiaceae. However, its floral morphology is so deviant that the genus was often placed in a family of its own. Even relationships outside Gentianales were postulated. Current molecular phylog...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Meise Botanic Garden
2022-10-01
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| Series: | Plant Ecology and Evolution |
| Online Access: | https://plecevo.eu/article/84606/download/pdf/ |
| _version_ | 1797422880325107712 |
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| author | Alexander Vrijdaghs Petra De Block Karen L. G. De Toni Erik Smets Elmar Robbrecht |
| author_facet | Alexander Vrijdaghs Petra De Block Karen L. G. De Toni Erik Smets Elmar Robbrecht |
| author_sort | Alexander Vrijdaghs |
| collection | DOAJ |
| description | Background – Vegetative and fruit characters of the Amazonian genus Dialypetalanthus point to a position in Rubiaceae. However, its floral morphology is so deviant that the genus was often placed in a family of its own. Even relationships outside Gentianales were postulated. Current molecular phylogenetic studies firmly show that Dialypetalanthus belongs to Rubiaceae. Aims – This study aims to understand the idiosyncratic floral morphology in Dialypetalanthus and to compare it with the floral development in two other Condamineeae genera as well as in other Rubiaceae for which ontogenetic data are available. Material and methods – SEM and LM based floral ontogeny in Dialypetalanthus fuscescens, Mussaendopsis beccariana, and Pogonopus exsertus. Results and main conclusions – Flowers in Dialypetalanthus develop a stamen-corolla-calyx tube, which can be considered as a floral morphological link between the genus and the other Rubiaceae. The polyandrous androecium originates from an annular intercalary meristem at the adaxial side of the stamen-corolla-calyx tube. |
| first_indexed | 2024-03-09T07:38:49Z |
| format | Article |
| id | doaj.art-ec879e23b5d145798de31ce762894e39 |
| institution | Directory Open Access Journal |
| issn | 2032-3921 |
| language | English |
| last_indexed | 2024-03-09T07:38:49Z |
| publishDate | 2022-10-01 |
| publisher | Meise Botanic Garden |
| record_format | Article |
| series | Plant Ecology and Evolution |
| spelling | doaj.art-ec879e23b5d145798de31ce762894e392023-12-03T05:22:04ZengMeise Botanic GardenPlant Ecology and Evolution2032-39212022-10-01155337939310.5091/plecevo.8460684606Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other RubiaceaeAlexander Vrijdaghs0Petra De Block1Karen L. G. De Toni2Erik Smets3Elmar Robbrecht4Meise Botanic GardenMeise Botanic GardenRio de Janeiro Botanical GardenNaturalis Biodiversity CenterMeise Botanic GardenBackground – Vegetative and fruit characters of the Amazonian genus Dialypetalanthus point to a position in Rubiaceae. However, its floral morphology is so deviant that the genus was often placed in a family of its own. Even relationships outside Gentianales were postulated. Current molecular phylogenetic studies firmly show that Dialypetalanthus belongs to Rubiaceae. Aims – This study aims to understand the idiosyncratic floral morphology in Dialypetalanthus and to compare it with the floral development in two other Condamineeae genera as well as in other Rubiaceae for which ontogenetic data are available. Material and methods – SEM and LM based floral ontogeny in Dialypetalanthus fuscescens, Mussaendopsis beccariana, and Pogonopus exsertus. Results and main conclusions – Flowers in Dialypetalanthus develop a stamen-corolla-calyx tube, which can be considered as a floral morphological link between the genus and the other Rubiaceae. The polyandrous androecium originates from an annular intercalary meristem at the adaxial side of the stamen-corolla-calyx tube.https://plecevo.eu/article/84606/download/pdf/ |
| spellingShingle | Alexander Vrijdaghs Petra De Block Karen L. G. De Toni Erik Smets Elmar Robbrecht Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae Plant Ecology and Evolution |
| title | Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae |
| title_full | Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae |
| title_fullStr | Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae |
| title_full_unstemmed | Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae |
| title_short | Floral ontogeny links Dialypetalanthus (Condamineeae) with the floral developmental morphology of other Rubiaceae |
| title_sort | floral ontogeny links dialypetalanthus condamineeae with the floral developmental morphology of other rubiaceae |
| url | https://plecevo.eu/article/84606/download/pdf/ |
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