Holotype: Thomasson SEM No. BP179, 31 July 1974, in Sternberg Memorial Museum (FHSM)
Isotypes: Thomasson No. 9.14, 9.15, in FHSM, ISC.e

Diagnosis--"Nutlets triangular-ovate, acute at the apex; ventral scar of attachment triangular, extending the length of the nutlet; base rounded; nutlet length 1.6-1.9 mm, depth (height) 1.0-1.2 mm; width 1.1-1.5 mm; surface of nutlet tuberculate".
Discussion--"This species of Cryptantha differs from all other species in the small size of the nutlet. The stratum from which the nutlets come lies below the Hamburg local fauna (Zehr, 1974)".