thelypteris
Could not find thelypterim in Logeion dictionaries.
thelypterim Noun: feminine accusative singular of thelypteris
thēlyptĕris, is, f., = θηλύπτερις,
- the female plant of the filix (fern, polypody), Plin. 27, 9, 55, § 78.
thēlypteris, idis, Akk. im, f. (θηλυπτερίς), die weibliche Pflanze des Farrenkrautes (filix), Plin. 27, 78.
thēlyptĕris, ĭdis, f. (θηλυπτερίς), fougère femelle [plante] : Plin. 27, 78.