# How to Filter for "Cotyledons" in an iNat Project? **URL:** \ **Category:** General\ **Tags:** question\ **Created:** [October 4, 2025, 3:06am UTC](https://forum.inaturalist.org/t/how-to-filter-for-cotyledons-in-an-inat-project/71088 "2025-10-04T03:06:26Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![upupa-epops](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/upupa-epops/32/1972_2.png) [@upupa-epops](https://forum.inaturalist.org/u/upupa-epops)\ **Post date:** [October 4, 2025, 4:25am UTC](https://forum.inaturalist.org/t/how-to-filter-for-cotyledons-in-an-inat-project/71088/3 "2025-10-04T04:25:45Z")
You could only do this with a collection project if they worked with observation fields; then you could add an observation field (e.g. [one of these](https://www.inaturalist.org/observation_fields?utf8=%E2%9C%93&q=cotyledon&commit=Search)) indicating that observations have cotyledons and they’d automatically be filtered into the project. There’s a feature request for that [here](https://forum.inaturalist.org/t/add-tags-observation-fields-threatened-status-description-choice-s-to-populate-collection-projects/8639). In the meantime, you’d need to use a traditional project. Or just use the already-existing observation fields if they serve your purpose without needing to create a project. Adding to a traditional project takes just as much effort as adding an observation field anyways, so they seem equivalent to me. > [@diegoalmendras](#): > > Has anyone else tackled a similar challenge for a specific, non-standard plant stage or feature? [Fasciation](https://www.inaturalist.org/projects/fascinating-fasciation) and [4-leaf clover](https://www.inaturalist.org/projects/four-leaf-clovers-of-inaturalist) projects would qualify for the latter description I think. --- _[View the full topic](https://forum.inaturalist.org/t/how-to-filter-for-cotyledons-in-an-inat-project/71088)._