Lottia digitalis Point on the California coast, "L. digitalis" coexists with the similar species, "Lottia scabra", but each occupies a slightly different habitat. "L. digitalis" tends to occupy vertical rock faces or overhangs and certain horizontal ones clothed by algae and barnacles. "L. digitalis" clump together more often, prefer wave-exposed areas, occupy sites further up the shore and are seldom found in rock pools. Both species move about freely when the tide is up but "L. digitalis" settles in a different location at each low tide whereas "L. scabra" tends to home to the same spot. "L. scabra" has a more rugged
Orazio Comes Orazio Comes Orazio Comes (11 November 1848 – 13 October 1917) was an Italian botanist. From 1906 to 1917 he directed the Agricultural Higher Institute of Portici, in which, thanks to Vincenzo de Cesati, he begun teaching since 1877 as assistant of Nicola Pedicino for the chair of botany, to whom he succeeded in 1880. In his works he studied the physiology and plant pathology of Neapolitan mushrooms and agricultural plants, such as beans and tobacco. From 1881, Comes began to deal with the cultivation of tobacco to improve industrial production and, starting from 1891, he emphasized the study and