

342 CALLITRINEAE [CH. 



district though on slender grounds. It may be, as Masters suggested, 

 that some at least of the Tertiary specimens included in Callitrites 

 Brongniarti are more closely allied to the existing genus Tetraclinis 

 than to Callitris. 



Among other species that may be included in Callitrites are 

 C. brachyphylla (Sap.) and C. antiqua (Sap.) from Provence 1 , repre- 

 sented by 'shoots with spiral, sub-opposite or opposite appressed 

 scale-leaves and by globular cones with four valves. As Solms- 

 Laubach says 2 , the cones agree closely with those of Widdringtonia, 

 though it would be difficult to decide between that genus and 

 Tetraclinis. 



Some good specimens are figured by Heer 3 from the Oeningen 

 beds as Widdringtonia helvetica, now transferred to Callitrites, con- 

 sisting of branched filiform foliage- shoots with small appressed 

 leaves and cones with four valves (fig. 762, C). 



Fragments of branches with small appressed leaves in opposite 

 pairs from the Oligocene amber beds of the Baltic coast are de- 

 scribed by Goeppert and Menge 4 as three species of Widdringtoniles, 

 and in one case, W. legitimus, the species is founded on a cone 

 6 mm. long and 2-5 mm. broad which is not above suspicion as a 

 record of a Callitrineous strobilus. Frenela europaea and F. Ewal- 

 dana described by Ludwig 5 fro'm Tertiary beds near Frankfurt are 

 founded on unconvincing specimens. Engelhardt and Kinkelin 6 

 describe pyramidal cones with 5 6 valves 1 1-5 cm. long (fig. 

 762, D), which they refer to Frenelites europaeus, from the Upper 

 Pliocene beds of the Lower Main valley. Many other similar 

 instances might be quoted, but on the other hand there is ample 

 evidence of the presence in the earlier Tertiary floras in Europe of 

 Conifers agreeing both in vegetative and reproductive shoots with 

 existing species now confined to Africa and Australia. 



FRENELOPSIS. Schenk. 



Schenk 7 instituted this generic name for specimens originally 

 described by Ettingshausen 8 from Wealden beds in Silesia as 



1 Saporta (62) PL n. fig. 7; (62 2 ) PI. m. fig. 3; (65 2 ) PI. i. fig. 4; (73) PI. n. fig. L 



2 Solms-Laubach (91) A. p. 60. 3 Heer (55) A. p. 48, PL xvi. figs. 218. 

 4 Goeppert and Menge (83) A. p. 39. 5 Ludwig (59) A. pp. 69, 136. 

 6 Engelhardt and Kinkelin (08) PL xxm. fig. 5. 7 Schenk (71) p. 13, PI. T. 

 8 Ettingshausen (52) p. 26, PL i. figs. 6, 7. 



