99 



interested in looking np (he history of luii^us anlipofii, which is 

 first described and figured therein. The type came from the 

 Tertiary of the Kirghis Steppe, north of the Aral Sea. Both 

 Knowlton and Penhallow credit the species to Abich, but it is 

 clear from the remarks at the end of the introduction and the 

 credit given in the list of figures on the i)lates that the plant was 

 described and named by Heer, and it should be so credited. 

 In 1877, Heer figured a number of leaves from the Miocene of 

 Sachalin, ascribing the species to himself. The figures show a 

 plant apparently just like the original one, except fig. /d on 

 plate 2. This last has an undulate margin, and is suggestive of 

 Fagns undiilata Knowlton, which comes from the Fort Union of 

 Yellowstone Park, and is presumably the species which Les- 

 quereux had identified as F. antipofii.. This Fagiis undulala 

 shows considerable resemblance to Quercus gronlandica figured by 

 Heer from the Miocene of Spitzbergen, and the living Chinese 

 Q. aliena Blume, but there is at present no proof that it is not a 

 Fagns. Kryshtofovich in 1921 published an account of speci- 

 mens ascribed to F. antipofii (writing it antipovii Heer) from the 

 Tertiary of Posiet, on the coast of Siberia just above the Korean 

 boundary. The figures show a narrower leaf, with the secon- 

 daries less crowded, and the margin distinctly undulate. Surely 

 this is not F. antipofii, but more likely a new species. Schenk 

 Intimates that F. pristina of Saporta, from the south of France, 

 is identical with 7^. antipofii, but later authors have treated it as 

 distinct. In 192 1 Kryshtofovich also recorded F. antipofii from 

 Chang-gi in Korea, but I suppose it was the same as the Posiet 

 plant. Heer recorded F. antipofii from the Kenai (Eocene) of 

 Alaska, finding it similar to the Sachalin and Kirghis plant. Sir 

 Wm. Dawson reported the species from the Oligocene of Quesnel 

 river, British Columbia, but the identification should be con- 

 firmed. It is also said to occur in the rocks of Greenland and 

 Japan. 



As matters now stand, it appears probable that F. antipofii 

 existed in America only in Alaska and perhaps Greenland. There 

 is no really reliable United States record, so far as I can learn. 

 It may be defined as a broad Fagus~\ik.t leaf with numerous 

 (13-16) pairs of secondary nervures, and entire margins. That 

 all leaves of this type belong to one species, or even to the genus 

 Fagus, cannot be certainly known. Who would ever imagine 



