Floral synorganisation without fusion in Geranium
Flowers of Geranium robertianum (Geraniaceae) are salverform with five separate accesses for pollinators to the nectar. Endress shows that each of these canals is formed by six organs out of four whorls without any fusion, but with synorganisation by the high degree of symmetry of the flower and by architectural reinforcement of the perianth organs. Obdiplostemony is involved in this synorganisation.
Edited by
One email a week, from the nonprofit Annals of Botany Company. Unsubscribe any time.
annals-of-botany
Longer cones and a clockwise spiral lead to tighter seed packing in a Jurassic conifer
Growth & Development
A new method reveals that developing barley seeds run their own form of photosynthesis, distinct from the familiar process in leaves.
Growth & Development
New research shows that the seeds of Butia capitata use seasonal temperature cues to weaken their protective barriers, ensuring germination happens when the rainy season gives seedlings the best chance to survive.
The nonprofit plant magazine
Lab science. Citizen science. Your source for plant science.