For many years I have been growing Sphagnum mosses as a medium for my carnivorous plants, so naturally one gets an acquaintance with other mosses that spring up. I also. annually, go around the local terrestrial orchid population and attempt to photo-document them and whilst doing so come across other mosses. This in turn generated an interest in other Bryophytes that associate with these plants. Lichens and Liverworts in mosses and yet more Lichens and Liverworts on rocks and branches. Lichens are of course not plants, they're a symbiotic relationship of a fungi with an alga, but the liverworts most certainly are and are members of the earliest plants to colonise the land. Anyway, enough prattle.
Here's a couple of photos of Marchantia polymorpha showing the gemmae pots.
The images are not quite as sharp as I'd have liked them but at this time of year the light just isn't that good for macro work.