The prothallium has no trichome but thick midvein, large antherid and archegonium. However,O.原叶体无毛状体 ,中脉厚 ,精子器和颈卵器较大 ;
Progress on the Roles of MYB Transcription Factors on Plant Trichome DevelopmentMYB类转录因子在植物腺毛发育中的作用研究进展