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TEXTBOOK OF BOTANY 



Fig. 301. Some widely distributed liverworts: A, Pellia thallus with antheridia 

 (dots on surface) and a sporophyte; B and C, land and water forms of Riccia; 

 D, archegonial thallus of Anthocews with sporophytes; E, a portion of the thallus 

 of Porella, a leafy liverwort. Courtesy of World Book Co. 



Fig. 302. Marchantia plants with archegonial and antheridial branches; cupules and 

 gemmae also present. Photo by R. B. Gordon. 



