IV. DESERT ALGAE, LICHENS, AND FUNGI
185
Fig. 13. Endolithic algal growth in the amorphous fossiliferous limestone shown
in Fig. 9. Negev Desert, 76 km on the road Sodom-Eilat. Scanning electron micrograph of the algal zone in a fractured rock. Gelatinous masses of the small-celled
endolithic Gloeocapsa sp. (arrows) fill microscopic cavities in the porous rock.
X400. After Friedmann (1971).
185
Fig. 13. Endolithic algal growth in the amorphous fossiliferous limestone shown
in Fig. 9. Negev Desert, 76 km on the road Sodom-Eilat. Scanning electron micrograph of the algal zone in a fractured rock. Gelatinous masses of the small-celled
endolithic Gloeocapsa sp. (arrows) fill microscopic cavities in the porous rock.
X400. After Friedmann (1971).