thallus

Term Information

Accession
PO:0030027
Aspect
plant anatomy
Synonyms
exact: 葉状体 (Japanese)
exact: talo (Spanish)
exact: thalli
broad: prothallium
Definition
A whole plant in the gametophytic phase that has a flat growth form and no distinct organs. [source: PO_REF:00001]
Comment
A thallus is a gametophyte of liverworts and pteridophytes and develops from a short-lived protonema. Roughly two dimensional growth results from division of a single apical cell. Thalli may be ribbon or heart shaped or almost filamentous. Although there are no distinct organs, there may be tissue differentiation and dichotomous branching.

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External References

closePO_GIT (1)

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