58 



Art. 8. — A. Kryshtofovich : 



Fig. 13. 



Aralia Tikhonovicbii n. sp. 



petiolate, oblanceolate, taper- 

 ing to the apex more ab- 

 ruptly than to the base. 

 Margin shortly obtase-cre- 

 nate- serrate, more evidently 

 in the upper half and a 

 little below, becoming quite 

 entire on the base. The 

 number of teeth about 10- 

 14 on each side. Midrib 

 stout, secondaries slender 

 and very slightly evident 

 among the general network of veins of lower ranks, rising steeply 

 upward, camptodrome near the edge. 



Our species shows closest resemblance with the two Cenoma- 

 nian species of Bohemia : A. corlacea Vel.^^ and A. {Panax) 

 dentifera Vel.^^ The most important difference between them and 

 ours is in the form of the teeth of margin, which are in ours fine 

 and well prominent below the middle of leaflet, but in A. coriacea 

 dentate only at the upper half. In A. dentifera, the teeth descend 

 almost down to the base, but are longer and less numerous than 

 in ours. On account of the above mentioned divergence from the 

 European forms, a separate species A. Tikhonovichii m. was esta- 

 blished. A. corlacea is very abundant in the Bohemian flora, and 

 our new species in the Mgacli, although the latter never plays so 

 important a rôle in the bed as A. Polevoi/'. 



As more or less similar to the Aralia of our typo, we may 

 point out some impressions, figured sometimes under quite different 



1) Veuînovsky (1886), p. 11, pi. I (XVI), f. 1-9 ; H (XVm) f. 2 ; also found in Balkans, 

 TouiA (1889) p. 33. 



2) Velenoysky (1886), p. 13, pi. H (X\TI), f. 3-5. 



