Milkweed Flower Morphology

Plants in the subfamily Asclepiadoideae all have a very interesting morphology. One particularly interesting modification is that the staminate and pistillate parts are fused together into a structure called a gynostegium. The stamens have been modified so that the pollen sticks together to form pollinia. Members of the Genus Asclepias (and some other genera) have a very specialized corona that forms structures called hoods and horns. This morphology is explained in the below longitudinal section.

Close-up of a pollinium:

This is what it looks like normally.

Posted by nathantaylor nathantaylor, November 29, 2018 01:28



Such valuable journal entries. Thanks for putting these informative things together, Nathan! It reminds me of reading @gcwarbler’s blogs — when he worked at Balcones, he put together such great blog entries (and now does it with iNat).

Keep it up, Nathan — I really enjoy these entries.

Posted by sambiology 11 months ago (Flag)

Ditto what @sambiology said. Your contributions are certainly educational and helpful.
Thanks for sharing your knowledge.

Posted by connlindajo 11 months ago (Flag)

Glad you two are enjoying it!

Posted by nathantaylor 11 months ago (Flag)

Wonderful, Nathan.

Posted by sonnia 11 months ago (Flag)

This is so-o-o-o beneficial! Thanks, Nathan.

Posted by suz 11 months ago (Flag)

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