Ascaso, C/ Valladares, F 1991: Comparative stereological study of the photobiont of Lasallia hispanica (Frey) Sancho & Crespo and Umbilicaria spodochroa var. carpetana Prov. - Symbiosis11: 147-162. [RLL List # / Rec.# 1153] Keywords: ALGAL LAYER/ CHLOROPLASTS/ LASALLIA/ MITOCHONDRIA/ PHOTOBIONT/ PYRENOIDS/ STEREOLOGY/ TREBOUXIA/ UMBILICARIA
Abstract: 2 fig. 5 tab. [The two species examined exhibit significant differences in the percentage of the volume of their algal layers and their photobionts (Trebouxia sp.) differ in the volume of their chloroplasts and mitochondria.]