# Bloemen van een Ratelaar (Rhinanthus) 13-06-2021. (d.j.b)

- By: Dominicus Johannes Bergsma
- Date: 2021-06-13
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Bloemen_van_een_Ratelaar_(Rhinanthus)_13-06-2021._(d.j.b).jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Bloemen_van_een_Ratelaar_%28Rhinanthus%29_13-06-2021._%28d.j.b%29.jpg/1920px-Bloemen_van_een_Ratelaar_%28Rhinanthus%29_13-06-2021._%28d.j.b%29.jpg
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Flowers of a Rhinanthus. Rhinanthus is a semi-parasite. Focus stack of 16 photos. the corolla (yellow part) is ± 12 mm. long. The seeds develop in the green ball under the corolla. When the seeds are ripe, they can rattle in the then brown ball.