P3R1O1T1H4A1L1L1U1S1
15 points
PROTHALLUS is validvalid
[n PROTHALLI, PROTHALLUSES]
the free-living gametophyte of a fern or other vascular cryptogam, also PROTHALLIUM [n PROTHALLI or PROTHALLUSES]
[n PROTHALLI, PROTHALLUSES]
the free-living gametophyte of a fern or other vascular cryptogam, also PROTHALLIUM [n PROTHALLI or PROTHALLUSES]