Raskya, S.R.Manchester & L.Hably, 1997

Kvaček, Zlatko & Teodoridis, Vasilis, 2011, The Late Eocene Flora Of Kučlín Near Bílina In North Bohemia Revisited, Acta Musei Nationalis Pragae Series B 67 (3 - 4), pp. 83-144 : 106

Raskya MANCHESTER et HABLY

1997 Raskya MANCHESTER et HABLY, p. 236.

T y p e: Raskya vetusta (ETTINGSHAUSEN) MANCHESTER et HABLY.

This so far monotypic genus was erected for quadrisepalous hypogenous fruits of unknown affinities previously interpreted by Reid and Chandler (1926) as belonging to Abelia . Manchester and Hably (1997) recognized the correct position of the ovary/fruit and ruled out the Caprifoliaceae with epigynous persistent calyces as a relative family. In spite of large-scale comparisons they did not find a satisfactory relationship for this genus. An extinct Juglandaceous genus Cruciptera MANCHESTER (1991) is distinguished by an inferior differently formed globose fruit, contrary to the superior elongate-fusiform in Raskya . The other similar genera with fruits subtended by wings radiating in a propeller manner, e.g., Asterocarpinus MANCHESTER et CRANE, are distinguished by fruit morphology and venation of sepals ( Manchester and Hably 1997). Only a single species of Raskya has been known so far and its all occurrences are confined to the Upper Eocene to Oligocene of Europe.