Riccia glauca. Development of the archegonium, X525. A, Vertical section through the growing point; x, apical cell; ... seen in longitudinal section; CI, cross- section of young archegonium (diagrammatic). the thallus is compact, but in the olderanbsp;...
|Title||:||The structure and development of mosses and ferns (Archegoniatae).|
|Author||:||Douglas Houghton Campbell|