Thalassia testudinum Banks & Sol. ex K.D.Koenig
no HD illustration available (m5)
Thalassia testudinum Banks & Sol. ex K.D.Koenig (Hydrocharitaceae) D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 75 A (1972) [G. Reinert & V. Frazier]