Jahns, HM/ Schuster, G 1981: Morphologenetische Untersuchungen an Cetraria islandica. - Beitrage zur Biologie der Pflanzen55: 427-473. [RLL List # 113-41 / Rec.# 9236] Keywords: MORPHOLOGY/ DEVELOPMENT/ CETRARIA/ APOTHECIA
Abstract: 1 table. 49 figures. [A study of the influence of apothecial development on size of thalline lobes showed that the apothecia "... have various morphogenetic influences on the habit of the thallus and therefore measurement of its size are of dubious value for systematic purposes. Fertile thalli have reached the end of their development and die off, but may regenerate by forming lobules. Apothecia are formed by fusion of numerous primordia."]