Riccia. discolor. L. et. L. Patidar, K. C. aamp; Kaul, A. 1984. Effect of pH on the growth of Riccia discolor L. et. L. Hikobia 9: ... Data based on 60-day old cultures revealed that the percentage revival of thallus, the number of the newly formed ... Diagrams have been drawn with the help of camera lucida of one of the replicates.