Figure 25. Land plants from Engebi, post shot. (a) Photo- graphs No. 597 and 599, portions of Triumfetta rocumbens; No. 598, Fimbristylis cymosa, upper portion not washed, lower portion washed with running tap water. (b) Autoradiographs of the plants in ta), 7 days exposure to Super xx Pan film. ~ 100 - \ \\h