Abstract
Melodinus pollen has been studied by light, scanning electron and transmission electron microscopy. The pollen grains are usually colporate, medium‐sized monads, and their shape varies from suboblate to oblate spheroidal. They are mostly 3‐aperturate, while four species have pollen with both three and four apertures, and one species has exclusively 4‐aperturate pollen. The ecto‐ and endoapertures show large size ranges. Melodinus coriaceus has its pollen in tetrahedral tetrads, while M. orientalis is polymorphic as to dispersal unit (mostly tetrads, sometimes monads). The monotypic genus Craspidospermum, which is the closest known relative of Melodinus, has its pollen also in tetrads, but these are very different (non‐tetrahedral, irregularly pantoporate). On the basis of pollen morphology, it is hypothesised that tetrads evolved independently in Melodinus and Craspidospermum
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
