Ophioglossum concinnum Brack.
      
no HD illustration available (m3)
2 716849 Ophioglossum concinnum Brack. Ophioglossaceae
C. Wilkes, U.S. Expl. Exped., vol. 16(1): (Botany pt. 2 Atlas Cryptogamia. ): t. 44, fig. 1 (1855) [W.S. Lawrence]