As nouns the difference between tallus and thallus
is that tallus is while thallus is (botany) an undifferentiated plant body, such as in algae.
thallus
English
Noun
(thalli)
(botany) An undifferentiated plant body, such as in algae.
(botany) Any plant body lacking vascular tissue.
Related terms
* thalliform
* thalline
* thallodal
* thalloid
* Thallobionta
* Thallophyta
* thallophyte
* thallose