1822 S. Clarke II. 271 Reversed or Salamanca Trefoil. Heads of flowers roundish; flowers reversed.
1854 A. Pratt I. 169 T. resupinátum (Reversed Trefoil).—Heads of flowers at first hemispherical, gradually becoming round, stalked; corollas inverted from the ordinary position.
1901 E. D. Marquand 78 Trifolium resupinatum... Reversed Trefoil.