... were less clearly defined than in those from the North Island and the cells surrounding them tended to disintegrate in older parts of the thallus. ... As was noted by Arnell (1963), the structure of the thallus in R. bullosa is intermediate between that of the subgenus Riccia and the subgenus Ricciella. ... 14: Diagram of 230.
|Title||:||New Zealand albatrosses and petrels|
|Author||:||Peter C. Harper, F. C. Kinsky|