As noted before, Liverwort does not seem to like higher light
intensities. The organism is probably present in the media your using
in the form of gemmae(sp). Next time sterilize the media beforehand,
use a non-contaminated media, and make sure not to contaminate the new
media from 'infected' pots.. The water that splashes off of liverworts
spreads their gemmae.
> it cannot cope with. The other weed I do not know the name of. It is
> a rosette of thin stalks with small spiky leaves arranged in bunches
This is probably some sort of rush. Locally, I seem to get alot of 'Japanese
Rush'. As does the MSU collection. It grows in the local mashes and wet
areas. Just be luck that you don't have _Oxalis_ running rampant.
JMS