and calices shall now be referred to Heisteria under the oldest 

 name — that proposed for the leaves, as follows: 



Heisteria sapindifolia (Hollick) Berry 

 Apocynophyllum sapindifolium Hollick in Harris and Veatch. 

 A preliminary report on the geology of Louisiana, p. 288, 

 pi. 46, fig. 3, 1899. 

 Berry, U. S. Geol. Survey Prof. Paper 91, p. 344, pi. 102, 

 fig. 1; pi. 108, fig. 5, 1916; Idem., 156, p. 129, pi. 19, figs. 

 13, 14; pi. 44, fig. 19, 1930. 

 Calycites milanensis Berry, Idem., p. 142, pi. 49, figs. 6-8, 1930. 



The figures of Calycites cited show the size of the concres- 

 cent calyx with parts of the characteristically shaped margin 

 and the central scar where the fruit was attached. In size, shape, 

 scar, texture and character of the calyx there is exact agreement 

 with the calices of existing species, such as Heisteria acuminata, 

 costaricensis and a number of other Central American forms. 



The genus Heisteria, or Hysteria as it is sometimes spelled, 

 contains over a score of existing species of trees almost wholly 

 confined to tropical Central and South America, but sparingly 

 represented in tropical west Africa. The leaves vary from linear- 

 lanceolate to ovate-lanceolate, with regularly spaced campto- 

 drome secondaries, in some species, e. g. Heisteria fiexuosa Eng- 

 ler from Brazil, these are comparatively straight, abruptly camp- 

 todrome with flat arches subparallel with the margins, and 

 inosculating intermediate veins subparallel with the second- 

 aries, and constitute a type which might easily be confused 

 with the leaves of the Apocynaceae. Others less abruptly camp- 

 todrome leaves are exactly like Apocynophyllum sapindifolium 

 in size, outline, and venation, both secondary and tertiary. 



The existing Heisterias with wider and larger leaves and 

 those seen from West Africa have much more emphasized sec- 

 ondaries which give them a wholly different aspect. As currently 

 treated Heisteria constitutes the tribe Heisterieae, of that in- 

 teresting and rather imperfectly understood family the Olaca- 

 ceae, which has scarcely been known to be represented in the 

 geological record. So far as I know no fossils had ever been 

 referred to the family until 1933 when Reid and Chandler de- 

 scribed^ the endocarps of a species of Olax Linne — an old world 



1 Reid, E. M. & M. E. J. Chandler, The London Clay Flora British Mu- 

 seum (Natural History), 1933. 



