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Unformatted text preview: to attach to the substrate are unicellular. Liverworts are generally heterothallic, producing separate male and female gametophytes. The gametophyte generation is predominant. The liverwort sporangium is a simple club-shaped structure. Thallose Liverworts The thallose liverworts have a lobed sheet-like shape, the thallus that has strong dorsalventral flattening. The thallus is about 30 cells thick. The apical meristem is often located in a notch in lobes and growth branches dichotomously. Life History and Reproduction...
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- Fall '09