A Tale of 2 Mosses (IMAGE) Cold Spring Harbor Laboratory Caption This is a top-down view of two moss samples (Physcomitrella patens). Lippman and his team found that in this evolutionarily primitive plant, when two HPAT genes are mutated (b) growth is enhanced compared with the unaltered wild-type (a). Credit Lippman lab, CSHL Usage Restrictions give credit pls License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.