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Bryophytes

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Riccia<br />

* Most species of Riccia are terrestrial, but Riccia fluitans is<br />

amphibious<br />

Habit Section of thallus<br />

Riccia fluitans (floating)<br />

Note large<br />

air chambers<br />

Top left - spore<br />

Bottom left - epidermal<br />

and photosynthetic cells<br />

Top right - sporophyte<br />

with tetrads<br />

Bottom right - habit<br />

Riccia glauca (terrestrial)<br />

Air spaces are narrow and slit-like

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