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Is the moss calyptra covered by a cuticle?

Is the moss calyptra covered by a cuticle?
Is the moss calyptra covered by a cuticle?

Over a century ago, the gametophytic calyptra was predicted to be covered by a cuticle that protects the sporophyte apex from desiccation. Budke et al. examine the moss Funaria hygrometrica using electron microscopy techniques and find that its calyptra is covered by a comparatively thick, multi-layered cuticle with cuticular pegs. The calyptra and its associated cuticle represent a unique form of maternal care that may have been essential for the evolution of the moss sporophyte.

Written by Annals of Botany Office

The Annals of Botany Office is based at the University of Oxford.

Pollination shift in Neotropical Malpighiaceae

Pollination shift in Neotropical Malpighiaceae

Image: Richard Wheeler/Wikimedia Commons.

Genome jealousy