What does the bold part mean?
All Tremella species are parasites of other fungi and most produce anamorphic yeast states.
Thanks a lot
"Anamorphic yeast states" in this instance refers to a state of being. It describes a particular attribute or condition of a particular life form. Scientifially speaking, the "yeast state" of an orangism is non-invasive, but sometimes overgrowth can trigger it into a "fungal state", which means the organism is invasive (the microscopic critters literally sprout roots, take hold in a body part and eventually cause an infection).