. The structure and development of mosses and ferns (Archegoniatae). /resemhles thdit oi Anthoceros. : The spores may remain undivided, as in Anthoceros, or insome species, e. g., D. crispus, they become multicellular beforethey are discharged. In this respect these species of Dendro-ceros recall Conocephalus and Pellia^ where germination beginsbefore the spores are set free. Notothylas The third genus, Notothylas, is of especial interest, becauseit was largely upon the results of his investigations upon this.

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