Honegger, R 1986: Ultrastructural studies in lichens. I. Haustorial types and their frequencies in a range of lichens with trebouxioid photobionts. - New Phytologist103: 785-795. [RLL List # 129-77 / Rec.# 8712] Keywords: SEM/ TEM/ ULTRASTRUCTURE/ HAUSTORIA/ APPRESSORIA/ MORPHOLOGY/ SYMBIOSIS/ TREBOUXIA
Abstract: 1 table. 7 figures. [SEM and TEM studies. "Between 150 and 350 algal cell halves per species were examined by SEM in order to calculate the predominant type of interaction." Interactions were categorized as (1) wall-to-wall apposition (simple or appressorium), (2) intracellular haustoria (with/without sheath, neckband, collar or papilla), or (3) intraparietal haustoria (3 types). Seventeen species were investigated.]