Suppression of Gemma-cups in Marchantia by High Humidity

Gemmae Cups, Liverwort, Marchantia Wood Print by Ed Reschke gemmae cups cup-like structures on their leafy thalli which contain multicellular propagules called gemmae When rain fills the gemmae cups, mature gemmae are released gemmae cup Most taxa of the genus Marchantia L produce multicellular gemmae within gemma cups They are discoid bodies with two notches

gemmae cups Many liverwort gametophytes produce asexual clones called gemmae A Lunularia thallus covered with gemmae cups that are shaped like crescents