prothallus
Concise Oxford English Dictionary © 2008 Oxford University Press:
prothallus /prəʊˈθaləs/
▶noun (pl. prothalli /-lʌɪ, -liː/) Botany the gametophyte of ferns and related plants.
– derivatives
prothallial adjective.
prothallial adjective.
'prothallus' also found in these Oxford entries:

