Term Information

Accession
PO:0030027
Name
thallus
Ontology
plant_anatomy
Synonyms
talo (Spanish, exact), thalli (exact, plural), 葉状体 (Japanese, exact), prothallium (broad)
Alternate IDs
None
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.
Subset
Pteridophytes
Bryophytes
Feedback
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Parents of thallus (PO:0030027)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
thallus [RO:0000056 relation] RO:0000056  gametophyte development stage (PO:0028003)
thallus [is_a relation] is_a  whole plant (PO:0000003)
Children of thallus (PO:0030027)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
thallus meristematic apical cell (PO:0030025) [BFO:0000050 relation] BFO:0000050  thallus
PO_GIT
317